{"id":21347,"date":"2026-09-13T08:35:03","date_gmt":"2026-09-13T06:35:03","guid":{"rendered":"https:\/\/webhosting.de\/linux-softirq-auslastung-analysieren-performance-tuning-datacenter\/"},"modified":"2026-09-13T08:35:03","modified_gmt":"2026-09-13T06:35:03","slug":"linux%e3%81%aesoftirq%e4%bd%bf%e7%94%a8%e7%8e%87%e3%81%ae%e5%88%86%e6%9e%90%e3%80%81%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc%e3%83%9e%e3%83%b3%e3%82%b9%e3%83%81%e3%83%a5%e3%83%bc%e3%83%8b%e3%83%b3","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/linux-softirq-auslastung-analysieren-performance-tuning-datacenter\/","title":{"rendered":"Linux\u306eSoftIRQ\u4f7f\u7528\u7387\u306e\u5206\u6790\u3068\u6700\u9069\u5316"},"content":{"rendered":"<p>\u79c1\u304c\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u304b\u3092\u3001\u9806\u3092\u8ffd\u3063\u3066\u8aac\u660e\u3057\u307e\u3059\u3002 <strong>Linux\u306eSoftIRQ<\/strong>- \u8ca0\u8377\u3092\u6e2c\u5b9a\u3057\u3001\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u53ef\u8996\u5316\u3057\u3001\u30ab\u30fc\u30cd\u30eb\u306e\u8a2d\u5b9a\u3092\u308f\u305a\u304b\u306b\u8abf\u6574\u3059\u308b\u3060\u3051\u3067\u72b6\u6cc1\u3092\u518d\u3073\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3002\u305d\u306e\u969b\u3001\u6e2c\u5b9a\u53ef\u80fd\u306a\u52b9\u679c\u3092\u512a\u5148\u3059\u308b\uff1a\u77ed\u7e2e\u3055\u308c\u305f <strong>\u9045\u5ef6\u6642\u9593<\/strong>, \u3001CPU\u30b3\u30a2\u306e\u8ca0\u8377\u30d0\u30e9\u30f3\u30b9\u304c\u826f\u597d\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8ca0\u8377\u304c\u9ad8\u3044\u72b6\u6cc1\u4e0b\u3067\u3082\u5b89\u5b9a\u3057\u305f\u30d1\u30b1\u30c3\u30c8\u51e6\u7406\u304c\u53ef\u80fd\u3002.<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n<ul>\n  <li><strong>\u6e2c\u5b9a\u30dd\u30a4\u30f3\u30c8<\/strong> \u7406\u89e3\u3059\u308b\uff1a\/proc\/softirqs\u3001softnet_stat\u3001interrupts<\/li>\n  <li><strong>\u75c7\u72b6<\/strong> \u691c\u77e5\uff1aksoftirqd\u306e\u8ca0\u8377\u3001\u30d1\u30b1\u30c3\u30c8\u640d\u5931\u3001\u9045\u5ef6\u306e\u6025\u5897<\/li>\n  <li><strong>\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0<\/strong> \u5236\u5fa1\uff1anetdev_budget \u304a\u3088\u3073 netdev_budget_usecs<\/li>\n  <li><strong>\u6d41\u901a<\/strong> \u4fdd\u5b58\uff1aIRQ\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3001RSS\u3001\u30ad\u30e5\u30fc\u30de\u30c3\u30d4\u30f3\u30b0<\/li>\n  <li><strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong> \u5b9f\u884c\u3059\u308b\u30b3\u30de\u30f3\u30c9\uff1ampstat\u3001perf\u3001\u30c8\u30ec\u30fc\u30b9<\/li>\n<\/ul>\n\n<h2>SoftIRQ\u306e\u6982\u8981\uff1a\u30ab\u30fc\u30cd\u30eb\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u5272\u308a\u8fbc\u307f\u304c\u767a\u751f\u3057\u305f\u5f8c\u3001\u30ab\u30fc\u30cd\u30eb\u306f\u51e6\u7406\u306e\u4e00\u90e8\u3092\u3044\u308f\u3086\u308b <strong>\u30bd\u30d5\u30c8IRQ<\/strong>, \u3001\u3053\u308c\u306b\u3088\u308a\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u30d1\u30b9\u304c\u901f\u3084\u304b\u306b\u89e3\u653e\u3055\u308c\u3001\u51e6\u7406\u306e\u9032\u884c\u3092\u8a08\u753b\u901a\u308a\u306b\u9032\u3081\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u3002\u7279\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d1\u30b9\u306b\u304a\u3044\u3066\u306f\u3001NAPI\u30cf\u30f3\u30c9\u30e9\u304cNIC\u30ea\u30f3\u30b0\u304b\u3089\u30d1\u30b1\u30c3\u30c8\u3092\u53ce\u96c6\u3057\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u51e6\u7406\u3092\u958b\u59cb\u3057\u3066\u3001\u30c7\u30fc\u30bf\u3092 <strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30bf\u30c3\u30af<\/strong>. \u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u91cf\u304c\u5897\u52a0\u3059\u308b\u3068\u3001ksoftirqd\/cpuN \u306e\u3088\u3046\u306a CPU \u30b9\u30ec\u30c3\u30c9\u304c\u4ecb\u5165\u3057\u3001\u30dd\u30fc\u30ea\u30f3\u30b0\u3084\u5f8c\u51e6\u7406\u3092\u5f15\u304d\u53d7\u3051\u307e\u3059\u3002\u3053\u306e\u5206\u96e2\u306b\u3088\u308a\u5168\u4f53\u7684\u306a\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u306f\u5411\u4e0a\u3057\u307e\u3059\u304c\u3001\u904e\u8ca0\u8377\u6642\u306b\u306f\u500b\u3005\u306e CPU \u306b\u304a\u3051\u308b\u30bd\u30d5\u30c8 IRQ \u306e\u5b9f\u884c\u6642\u9593\u304c\u9577\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <strong>\u30b3\u30a2<\/strong> \u3092\u5f15\u304d\u8d77\u3053\u3059\u3002\u305d\u306e\u305f\u3081\u3001NET_RX\u304a\u3088\u3073NET_TX\u30d1\u30b9\u304c\u652f\u914d\u7684\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u304b\u3001\u307e\u305fksoftirqd\u304c\u660e\u3089\u304b\u306bCPU\u6642\u9593\u3092\u6d88\u8cbb\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u65e9\u671f\u306b\u76e3\u8996\u3057\u3066\u3044\u308b\u3002\u305d\u3046\u3059\u308b\u3053\u3068\u3067\u3001SoftIRQ\u304c\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3068\u306a\u3063\u3066\u3044\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u3092\u628a\u63e1\u3057\u3001\u3055\u3089\u306a\u308b <strong>\u6700\u9069\u5316<\/strong> \u304c\u5fc5\u8981\u3067\u3042\u308b\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/09\/linux-analyse-optimierung-5893.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>SoftIRQ\u306e\u8ca0\u8377\u304c\u9ad8\u3044\u5834\u5408\u306e\u5178\u578b\u7684\u306a\u75c7\u72b6\u3092\u898b\u5206\u3051\u308b<\/h2>\n<p>SoftIRQ\u306e\u8ca0\u8377\u304c\u9ad8\u3044\u3053\u3068\u306f\u3001\u307e\u305a\u3001\u5e38\u306b\u9ad8\u3044 <strong>\u30ab\u30fc\u30cd\u30ebCPU<\/strong> \u305d\u3057\u3066\u3001\u6570\u79d2\u306b\u308f\u305f\u3063\u3066\u30d4\u30fc\u30af\u5024\u3092\u7dad\u6301\u3057\u7d9a\u3051\u308bksoftirqd\u30d7\u30ed\u30bb\u30b9\u3002\u3053\u308c\u3068\u4e26\u884c\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304a\u3088\u3073\u30d6\u30ed\u30c3\u30afI\/O\u306e\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u5897\u52a0\u3057\u3001\u305d\u306e\u7d50\u679c\u3001TLS\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u304c\u91cd\u304f\u306a\u3063\u305f\u308a\u3001\u51e6\u7406\u304c\u920d\u304f\u306a\u3063\u305f\u308a\u3059\u308b <strong>API<\/strong> \u3068\u8ff0\u3079\u3066\u3044\u308b\u3002\u30d1\u30b1\u30c3\u30c8\u306e\u640d\u5931\u304c\u983b\u767a\u3059\u308b\u4e00\u65b9\u3067\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ab\u30fc\u30c9\u306e\u30ea\u30f3\u30b0\u306f\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3057\u3001\u30d0\u30c3\u30af\u30ed\u30b0\u304c\u5897\u5927\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3002\u5272\u308a\u8fbc\u307f\u306e\u5206\u6563\u304c\u4e0d\u5341\u5206\u306a\u5834\u5408\u3001\u591a\u304f\u306eIRQ\u30e9\u30a4\u30f3\u3068\u305d\u308c\u306b\u4f34\u3046\u51e6\u7406\u304c1\u3064\u306e <strong>\u30b3\u30a2<\/strong> \u767a\u751f\u3059\u308b\u3002\u3053\u306e\u5358\u4e00\u30b3\u30a2\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d3\u30b9\u306e\u5f85\u3061\u6642\u9593\u304c\u9577\u304f\u306a\u308a\u3001\u5b9f\u52b9\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u304c\u4f4e\u4e0b\u3059\u308b\u3002\u305d\u3053\u3067\u3001\u3053\u306e\u73fe\u8c61\u304c\u4f53\u7cfb\u7684\u306a\u3082\u306e\u306a\u306e\u304b\u3001\u305d\u308c\u3068\u3082\u5358\u306b <strong>\u30d4\u30fc\u30af<\/strong> \u306b\u3064\u306a\u304c\u308b\u3002.<\/p>\n\n<h2>\u4e3b\u8981\u306a\u6e2c\u5b9a\u30dd\u30a4\u30f3\u30c8\uff1a\/proc \u3068\u30c4\u30fc\u30eb\u306e\u6b63\u3057\u3044\u8aad\u307f\u65b9<\/h2>\n<p>\u307e\u305a\u306f \/proc\/softirqs \u304b\u3089\u59cb\u3081\u3088\u3046\u3002\u305d\u3053\u306b\u306f\u3001CPU \u3054\u3068\u3001\u30bf\u30a4\u30d7\u3054\u3068\u306b\u3001\u3069\u306e\u7a0b\u5ea6\u306e\u8ca0\u8377\u304c\u304b\u304b\u3063\u3066\u3044\u308b\u304b\u304c\u308f\u304b\u308b\u304b\u3089\u3060\u3002 <strong>NET_RX<\/strong>, NET_TX\u3001TIMER\u3001\u307e\u305f\u306fBLOCK\u304c\u4e0a\u6607\u3059\u308b\u3002\/proc\/net\/softnet_stat \u3067\u306f\u3001\u4e88\u7b97\u8d85\u904e\u3084\u30c9\u30ed\u30c3\u30d7\u3092\u793a\u5506\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u884c\u3092\u78ba\u8a8d\u3057\u3066\u3044\u308b\u3002\u3053\u308c\u3089\u304c\u7d99\u7d9a\u7684\u306b\u4e0a\u6607\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u660e\u3089\u304b\u306b\u5e2f\u57df\u5e45\u304c\u4e0d\u8db3\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u308b\u3002 <strong>\u30dd\u30fc\u30ea\u30f3\u30b0\u30b5\u30a4\u30af\u30eb<\/strong> \u3053\u3068\u3092\u793a\u5506\u3057\u3066\u3044\u308b\u3002\/proc\/interrupts \u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u5272\u308a\u8fbc\u307f\u304c\u5404 CPU \u306b\u4e0d\u5747\u7b49\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3001\u307e\u305f\u3069\u306e IRQ \u304c\u6700\u3082\u8ca0\u8377\u304c\u9ad8\u3044\u304b\u304c\u308f\u304b\u308b\u3002mpstat\u3001top\u3001htop \u306a\u3069\u306e\u30c4\u30fc\u30eb\u3092\u4f7f\u3048\u3070\u3001ksoftirqd\/cpuN \u3092\u7279\u5b9a\u3057\u3001\u305d\u306e <strong>Softirq\u306e\u30bf\u30a4\u30df\u30f3\u30b0<\/strong> \u30b3\u30a2\u3054\u3068\u306b\u8a55\u4fa1\u3059\u308b\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001perf\u306f\u30b9\u30bf\u30c3\u30af\u5185\u306e\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u3092\u7279\u5b9a\u3057\u3001\u51e6\u7406\u6642\u9593\u306e\u5272\u5408\u304c\u9ad8\u3044\u30cf\u30f3\u30c9\u30e9\u3084\u30c9\u30e9\u30a4\u30d0\u30d1\u30b9\u3092\u7279\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3002\u4ee5\u4e0b\u306e\u8868\u306f\u3001\u4e3b\u8981\u306a\u6e2c\u5b9a\u30dd\u30a4\u30f3\u30c8\u3001\u6307\u6a19\u3001\u304a\u3088\u3073\u5178\u578b\u7684\u306a <strong>\u884c\u52d5<\/strong> \u4e00\u7dd2\u306b\u306d\u3002<\/p>\n<table>\n  <thead>\n    <tr>\n      <th>\u6e2c\u5b9a\u30dd\u30a4\u30f3\u30c8<\/th>\n      <th>\u4e3b\u8981\u306a\u9805\u76ee\uff0f\u6307\u6a19<\/th>\n      <th>\u89e3\u91c8<\/th>\n      <th>\u30a2\u30af\u30b7\u30e7\u30f3<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>\/proc\/softirqs<\/td>\n      <td>NET_RX\u3001NET_TX\u3001BLOCK \u305d\u308c\u305e\u308c <strong>CPU<\/strong><\/td>\n      <td>\u8377\u91cd\u306e\u504f\u308a\u304c\u78ba\u8a8d\u3067\u304d\u308b<\/td>\n      <td>IRQ\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u306e\u8abf\u6574\u3001RSS\u306e\u6709\u52b9\u5316<\/td>\n    <\/tr>\n    <tr>\n      <td>\/proc\/net\/softnet_stat<\/td>\n      <td>\u4e88\u7b97\uff0f\u30c9\u30ed\u30c3\u30d7\u30ab\u30a6\u30f3\u30bf\u30fc\u3001\u7b2c3 <strong>\u5217<\/strong><\/td>\n      <td>\u4e88\u7b97\u304c\u5c11\u306a\u3059\u304e\u3066\u3001\u8377\u7269\u304c\u653e\u7f6e\u3055\u308c\u305f\u307e\u307e<\/td>\n      <td>netdev_budget\/usecs \u3092\u5897\u3084\u3057\u3001RPS \u3092\u78ba\u8a8d\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td>\/proc\/interrupts<\/td>\n      <td>IRQ-Lines pro <strong>CPU<\/strong>, \u30ad\u30e5\u30fc\u30de\u30c3\u30d4\u30f3\u30b0<\/td>\n      <td>\u5c11\u306a\u3044\u30b3\u30a2\u6570\u306b\u5bfe\u3057\u3066IRQ\u304c\u591a\u3059\u304e\u308b<\/td>\n      <td>irqbalance \u306e\u78ba\u8a8d\u3001smp_affinity \u306e\u8a2d\u5b9a<\/td>\n    <\/tr>\n    <tr>\n      <td>mpstat \/ perf<\/td>\n      <td>%soft\u3001\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u3001, <strong>\u30b9\u30bf\u30c3\u30af\u30b9<\/strong><\/td>\n      <td>\u652f\u914d\u7684\u306a\u30cf\u30f3\u30c9\u30e9\u30fc\u3068\u30b3\u30a2\u304c\u8868\u793a\u3055\u308c\u308b<\/td>\n      <td>\u30c9\u30e9\u30a4\u30d0\u3068\u30b9\u30bf\u30c3\u30af\u306e\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3092\u512a\u5148\u3059\u308b<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>\u9ad8\u8ca0\u8377\u306e\u539f\u56e0\u3068\u30d1\u30bf\u30fc\u30f3<\/h2>\n<p>\u30d4\u30fc\u30af\u306f\u3001\u975e\u5e38\u306b\u9ad8\u3044 <strong>\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8<\/strong>, \u3001\u591a\u6570\u306e\u4e26\u5217\u63a5\u7d9a\u3084\u3001NET_RX\u3092\u652f\u914d\u3059\u308bUDP\u30d0\u30fc\u30b9\u30c8\u306a\u3069\u3002\u30c9\u30e9\u30a4\u30d0\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u8a2d\u5b9a\u3067\u306f\u5c0f\u3055\u306a\u30d0\u30c3\u30c1\u304c\u60f3\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u304c\u3042\u308a\u3001\u305d\u306e\u7d50\u679c\u3001\u5272\u308a\u8fbc\u307f\u304c\u904e\u5270\u306b\u767a\u751f\u3057\u3066ksoftirqd\u306b\u904e\u8ca0\u8377\u304c\u304b\u304b\u308b\u4e00\u65b9\u3067\u3001GRO\/LRO\u306f\u6d3b\u7528\u3055\u308c\u306a\u3044\u307e\u307e <strong>\u6b8b\u9ab8<\/strong>. \u597d\u307e\u3057\u304f\u306a\u3044\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u8a2d\u5b9a\u306b\u3088\u308a\u3001\u5229\u7528\u53ef\u80fd\u306a\u30ad\u30e5\u30fc\u304c\u8907\u6570\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u51e6\u7406\u304cCPU 0\u306b\u96c6\u4e2d\u3057\u3066\u3057\u307e\u3044\u3001RSS\u3092\u6d3b\u7528\u3059\u308c\u3070\u8ca0\u8377\u5206\u6563\u304c\u5bb9\u6613\u306b\u306a\u308b\u306f\u305a\u306a\u306e\u306b\u3002\u4eee\u60f3\u30de\u30b7\u30f3\u3067\u306f\u3001vNIC\u304c\u30db\u30b9\u30c8\u30ab\u30fc\u30cd\u30eb\u306b\u8ca0\u8377\u3092\u304b\u3051\u3001\u305d\u306e\u7d50\u679c\u3001\u30b2\u30b9\u30c8\u306e\u72a0\u7272\u3092\u4f34\u3044\u306a\u304c\u3089\u30db\u30b9\u30c8\u5074\u306eSoftIRQ\u6642\u9593\u304c\u9577\u304f\u306a\u3063\u3066\u3057\u307e\u3046 <strong>\u5897\u52a0\u3055\u305b\u308b<\/strong>. \u30b3\u30f3\u30c6\u30ca\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u306f\u30b9\u30bf\u30c3\u30af\u306b\u8ffd\u52a0\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u91cd\u306d\u308b\u305f\u3081\u3001\u5358\u7d14\u306a\u30d5\u30ed\u30fc\u304c\u7a81\u7136\u3001\u3088\u308a\u8907\u96d1\u306a\u30d1\u30b9\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3002\u5206\u6563\u3001\u4e88\u7b97\u3001\u305d\u3057\u3066 <strong>\u30d0\u30c3\u30c1\u51e6\u7406<\/strong> \u5168\u4f53\u3068\u3057\u3066\u307e\u3068\u307e\u3063\u305f\u5370\u8c61\u3092\u4e0e\u3048\u308b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/09\/linux_softirq_meeting_8593.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u7684\u3092\u7d5e\u3063\u305f\u76e3\u8996\uff1aSoftIRQ\u306e\u53ef\u8996\u5316<\/h2>\n<p>\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3092\u884c\u3046\u305f\u3081\u306b\u3001\u79c1\u306f\u5b9a\u671f\u7684\u306b\u4ee5\u4e0b\u306e\u8cc7\u6599\u3092\u8aad\u3093\u3067\u3044\u307e\u3059\u3002 <strong>\/proc<\/strong>-\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u7279\u5b9a\u3057\u3001\u8ca0\u8377\u3084\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u9045\u5ef6\u3068\u3044\u3063\u305f\u30db\u30b9\u30c8\u30e1\u30c8\u30ea\u30af\u30b9\u3068\u95a2\u9023\u4ed8\u3051\u307e\u3059\u3002NET_RX\u306e\u5897\u52a0\u3068\u30c9\u30ed\u30c3\u30d7\u30ab\u30a6\u30f3\u30c8\u3092\u76f8\u95a2\u5206\u6790\u3057\u3001\u5358\u306b\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u304c\u5897\u52a0\u3057\u3066\u3044\u308b\u3060\u3051\u306a\u306e\u304b\u3001\u305d\u308c\u3068\u3082\u7d4c\u8def\u4e0a\u3067\u30d1\u30b1\u30c3\u30c8\u304c\u5931\u308f\u308c\u3066\u3044\u308b\u306e\u304b\u3092\u660e\u3089\u304b\u306b\u3057\u307e\u3059 <strong>\u6ede\u5728<\/strong>. mpstat \u306f CPU \u3054\u3068\u306b\u30bd\u30d5\u30c8 IRQ \u306e\u6642\u9593\u5272\u5408\u3092\u8868\u793a\u3057\u3001top\/htop \u306f\u76ee\u7acb\u3064 ksoftirqd\/cpuN \u30b9\u30ec\u30c3\u30c9\u3092\u8868\u793a\u3057\u307e\u3059\u3002perf record\/perf top \u3092\u4f7f\u3063\u3066\u3001\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u306e\u30aa\u30d5\u30ed\u30fc\u30c9\u3084 GRO \u306e\u30de\u30fc\u30b8\u306a\u3069\u3001\u30b3\u30b9\u30c8\u306e\u304b\u304b\u308b\u51e6\u7406\u30d1\u30b9\u3092\u7279\u5b9a\u3057\u307e\u3059\u3002 <strong>\u30ad\u30e5\u30fc\u30c7\u30a3\u30b9\u30af<\/strong>-\u4f5c\u696d\u3002eBPF \u3084 ftrace \u306b\u57fa\u3065\u304f\u30c8\u30ec\u30fc\u30b9\u3067\u306f\u3001\u30cf\u30f3\u30c9\u30e9\u306e\u958b\u59cb\u3068\u7d42\u4e86\u304c\u78ba\u8a8d\u3067\u304d\u308b\u305f\u3081\u3001\u30cf\u30f3\u30c9\u30e9\u306e\u5b9f\u884c\u6642\u9593\u3084\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u306e\u5f71\u97ff\u3092\u8a55\u4fa1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30e1\u30c8\u30ea\u30af\u30b9\u3084\u6642\u9593\u7d4c\u904e\u3001\u304a\u3088\u3073 <strong>\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8<\/strong>.<\/p>\n\n<h2>netdev_budget \u304a\u3088\u3073 netdev_budget_usecs \u3092\u4f7f\u7528\u3057\u305f\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0<\/h2>\n<p>NAPI\u30d1\u30b9\u304c\u77ed\u3059\u304e\u308b\u5834\u5408\u306f\u3001\u6bb5\u968e\u7684\u306b\u5ef6\u9577\u3057\u307e\u3059 <strong>net.core.netdev_budget<\/strong> \u304a\u3088\u3073 net.core.netdev_budget_usecs \u3092\u8abf\u6574\u3057\u3066\u3001\u30dd\u30fc\u30ea\u30f3\u30b0\u30b5\u30a4\u30af\u30eb\u3042\u305f\u308a\u306e\u51e6\u7406\u30d1\u30b1\u30c3\u30c8\u6570\u3092\u5897\u3084\u3057\u307e\u3059\u3002\u305d\u306e\u969b\u3001\/proc\/net\/softnet_stat \u306e 3 \u5217\u76ee\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5897\u52a0\u7387\u304c\u4f4e\u4e0b\u3059\u308c\u3070\u3001\u5909\u66f4\u304c\u7684\u3092\u5c04\u3066\u304a\u308a\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u304c <strong>\u3088\u308a\u77ed\u3044<\/strong>. \u5024\u3092\u9069\u5ea6\u306b\u5897\u3084\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001300 \u30d1\u30b1\u30c3\u30c8\u304b\u3089 600 \u30d1\u30b1\u30c3\u30c8\u3078\u30012000 \u30de\u30a4\u30af\u30ed\u79d2\u304b\u3089 4000 \u30de\u30a4\u30af\u30ed\u79d2\u3078\u3068\u5909\u66f4\u3057\u3001\u4ed6\u306e\u30bf\u30b9\u30af\u304c\u5341\u5206\u306a CPU \u6642\u9593\u3092\u78ba\u4fdd\u3067\u304d\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 \u5024\u304c\u5927\u304d\u3059\u304e\u308b\u3068\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u8ca0\u8377\u306e\u30d4\u30fc\u30af\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30b9\u30a4\u30c3\u30c1\u3001\u304a\u3088\u3073\u30e9\u30f3\u30ad\u30e5\u30fc\u306e\u9577\u3055\u3092\u53b3\u5bc6\u306b <strong>\u540c\u884c\u3059\u308b<\/strong>. \u3002\u3055\u3089\u306b\u3001RPS\/RFS\u3001GRO\/LRO\u3001\u304a\u3088\u3073MTU\u3092\u78ba\u8a8d\u3057\u3001\u30d0\u30c3\u30c1\u51e6\u7406\u3084\u30d1\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3082\u6709\u52b9\u3067\u3059\u3002\u5272\u308a\u8fbc\u307f\u306e\u6025\u5897\u3092\u6291\u3048\u308b\u305f\u3081\u306b\u3001\u79c1\u306f\u4ee5\u4e0b\u306e\u70b9\u3092\u8003\u616e\u3057\u3066\u3044\u307e\u3059 <a href=\"https:\/\/webhosting.de\/ja\/%e5%89%b2%e3%82%8a%e8%be%bc%e3%81%bf%e5%90%88%e4%bd%93%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e6%9c%80%e9%81%a9%e5%8c%96-serverflux\/\">\u5272\u308a\u8fbc\u307f\u5408\u4f53<\/a> \u307e\u305f\u3001\u3053\u306e\u30ec\u30d0\u30fc\u304c\u5229\u7528\u53ef\u80fd\u306a\u5834\u5408\u306f\u3001NIC\u30c9\u30e9\u30a4\u30d0\u3067\u3082\u540c\u69d8\u306e\u5fae\u8abf\u6574\u3092\u884c\u3044\u307e\u3059 <strong>\u3067\u3054\u3056\u308b<\/strong>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/09\/linux-softirq-analyse-optimierung-4738.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u5272\u308a\u8fbc\u307f\u306e\u5272\u308a\u5f53\u3066\u3068IRQ\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u306e\u6700\u9069\u5316<\/h2>\n<p>\u30b7\u30f3\u30b0\u30eb\u30b3\u30a2\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u3001IRQ\u3092\u8907\u6570\u306e <strong>CPU<\/strong>, \u3001irqbalance \u3092\u4f7f\u7528\u3059\u308b\u304b\u3001\u624b\u52d5\u3067 smp_affinity \u30de\u30b9\u30af\u3092\u8a2d\u5b9a\u3059\u308b\u304b\u3001\u306e\u3044\u305a\u308c\u304b\u3067\u3059\u3002\u305d\u306e\u969b\u3001\u65e2\u5b58\u306e NIC \u30ad\u30e5\u30fc\u3092\u53c2\u8003\u306b\u3057\u3001RSS \u3092\u6709\u52b9\u306b\u3057\u3066\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u304c\u7740\u4fe1\u30d5\u30ed\u30fc\u3092\u5747\u7b49\u306b\u5206\u6563\u3055\u305b\u3001\u5404\u30b3\u30a2\u304c\u8ca0\u8377\u8efd\u6e1b\u52b9\u679c\u3092\u5f97\u3089\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002 <strong>\u30d0\u30c3\u30c1<\/strong> \u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u5c40\u6240\u6027\u3068\u8a08\u753b\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u3001\u5236\u5fa1\u7528IRQ\u3092\u300c\u30db\u30c3\u30c8\u30c7\u30fc\u30bf\u30d1\u30b9\u300d\u3068\u6df7\u5728\u3055\u305b\u306a\u3044\u3088\u3046\u6ce8\u610f\u3057\u3066\u3044\u307e\u3059\u3002\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001SoftIRQ\u306e\u51e6\u7406\u304c\u7279\u5b9a\u306e\u30b3\u30a2\u306b\u6ede\u7559\u3057\u306a\u304f\u306a\u308b\u305f\u3081\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u4f4e\u6e1b\u3055\u308c\u3001\u30c9\u30ed\u30c3\u30d7\u3082\u6e1b\u5c11\u3057\u307e\u3059\u3002 <strong>\u6b8b\u9ab8<\/strong>. \u30c9\u30e9\u30a4\u30d0\u306f\u3057\u3070\u3057\u3070sysfs\u306b\u30ad\u30e5\u30fc\u3068CPU\u306e\u5272\u308a\u5f53\u3066\u60c5\u5831\u3092\u8868\u793a\u3057\u307e\u3059\u3002\u305d\u3053\u3067\u3001\u5404\u30ad\u30e5\u30fc\u306b\u9069\u5207\u306a\u30ab\u30fc\u30cd\u30eb\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u308b\u304b\u3001\u975e\u5bfe\u79f0\u6027\u304c\u751f\u3058\u3066\u3044\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3088\u308a\u8a73\u7d30\u306a\u70b9\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30ac\u30a4\u30c9\u3092\u53c2\u8003\u306b\u3057\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc-irq-%e3%82%a2%e3%83%95%e3%82%a3%e3%83%8b%e3%83%86%e3%82%a3-%e3%83%9e%e3%83%ab%e3%83%81%e3%82%b3%e3%82%a2-%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af\/\">IRQ\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3<\/a>, \u3001NUMA\u306e\u5074\u9762\u3084\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u52b9\u679c\u306b\u3064\u3044\u3066\u3082 <strong>\u8003\u616e\u306b\u5165\u308c\u308b<\/strong>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/09\/linux_softirq_optimierung_2793.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u5b9f\u8df5\u30ac\u30a4\u30c9\uff1a\u75c7\u72b6\u304b\u3089\u89e3\u6c7a\u7b56\u3078<\/h2>\n<p>\u307e\u305a\u3001\u75c7\u72b6\u3092\u78ba\u8a8d\u3057\u307e\u3059\uff1atop \u3067\u306e ksoftirqd\/cpuN\u3001\u5404\u30b3\u30a2\u3054\u3068\u306e SoftIRQ \u306e\u5272\u5408\u306f <strong>\u30a8\u30e0\u30d4\u30fc\u30b9\u30bf\u30c3\u30c8<\/strong> \u305d\u3057\u3066\u3001\u9855\u8457\u306aNET_RX\u306e\u6025\u5897\u304c\u898b\u3089\u308c\u308b\u3002\u305d\u306e\u5f8c\u3001\/proc\/softirqs\u3001\/proc\/net\/softnet_stat\u3001\u304a\u3088\u3073\/proc\/interrupts\u304b\u3089\u78ba\u304b\u306a\u30c7\u30fc\u30bf\u3092\u53ce\u96c6\u3057\u3001\u652f\u914d\u7684\u306a\u30d1\u30b9\u3084\u504f\u3063\u305f\u5206\u5e03\u3092\u8a18\u9332\u3059\u308b\u3002 \u7d9a\u3044\u3066\u3001\u5fae\u8abf\u6574\u3092\u884c\u3044\u307e\u3059\u3002\u307e\u305a netdev \u30d0\u30b8\u30a7\u30c3\u30c8\u3092\u8abf\u6574\u3057\u3001\u6b21\u306b IRQ \u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3068 RSS \u3092\u8abf\u6574\u3057\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u3001\u7dbf\u5bc6\u306a <strong>\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/strong>. \u30c9\u30ed\u30c3\u30d7\u304c\u5f15\u304d\u7d9a\u304d\u78ba\u8a8d\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u30c9\u30e9\u30a4\u30d0\u306e\u8a2d\u5b9a\u3001\u30b3\u30a2\u30ec\u30b9\u30b7\u30f3\u30b0\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3001\u30aa\u30d5\u30ed\u30fc\u30c9\u3001\u304a\u3088\u3073GRO\/LRO\u306e\u6319\u52d5\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002VM\u3084\u30b3\u30f3\u30c6\u30ca\u306e\u30db\u30b9\u30c8\u3067\u306f\u3001\u3055\u3089\u306bvNIC\u304c\u7269\u7406\u30db\u30b9\u30c8\u30b9\u30bf\u30c3\u30af\u3068\u3069\u306e\u3088\u3046\u306b\u9023\u643a\u3057\u3066\u3044\u308b\u304b\u3001\u307e\u305f\u3069\u3053\u3067 <strong>\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8<\/strong> \u5b9f\u969b\u306b\u305d\u3046\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3002\u3042\u3089\u3086\u308b\u5909\u66f4\u306b\u3064\u3044\u3066\u3001\u30e1\u30c8\u30ea\u30af\u30b9\u3068\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u826f\u597d\u306a\u6c34\u6e96\u3067\u5b89\u5b9a\u3059\u308b\u307e\u3067\u3001\u6642\u7cfb\u5217\u30c7\u30fc\u30bf\u3092\u7528\u3044\u3066\u8a55\u4fa1\u3057\u3066\u3044\u307e\u3059 <strong>\u30e9\u30f3\u30c9<\/strong>.<\/p>\n\n<h2>\u6301\u7d9a\u53ef\u80fd\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n<p>SoftIRQ\u30ab\u30a6\u30f3\u30bf\u306e\u5b9a\u671f\u7684\u306a\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3092\u5b9a\u7740\u3055\u305b\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u4e00\u5b9a\u3067\u3042\u308b\u5834\u5408\u306b\u306e\u307f <strong>\u900f\u660e\u6027<\/strong> \u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306e\u518d\u767a\u3092\u9632\u304e\u307e\u3059\u3002\u6700\u65b0\u306e\u30ab\u30fc\u30cd\u30eb\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5c0e\u5165\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u306f\u3001NAPI\u3084\u30b9\u30bf\u30c3\u30af\u304c\u5185\u90e8\u7684\u306b\u3055\u3089\u306b\u6539\u5584\u3055\u308c\u3001\u305d\u308c\u306b\u3088\u3063\u3066\u53b3\u3057\u3044\u72b6\u6cc1\u306b\u5099\u3048\u305f\u4f59\u88d5\u304c\u751f\u307e\u308c\u308b\u70b9\u306b\u3042\u308a\u307e\u3059\u3002 <strong>\u8ca0\u8377<\/strong> \u5b9f\u73fe\u3059\u308b\u3002\u8907\u6570\u306e\u30b3\u30a2\u3078\u306e\u30d0\u30e9\u30f3\u30b9\u306e\u53d6\u308c\u305f\u5206\u6563\u306f\u5fc5\u9808\u3067\u3042\u308a\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u3092\u7e1b\u308a\u4ed8\u3051\u305a\u306b\u5341\u5206\u306a\u6570\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u51e6\u7406\u3067\u304d\u308b\u9069\u5207\u306a\u4e88\u7b97\u8a2d\u5b9a\u3082\u540c\u69d8\u306b\u4e0d\u53ef\u6b20\u3060\u3002HTTPS\u3084API\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u591a\u3044\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u5408\u306f\u3001 <a href=\"https:\/\/webhosting.de\/ja\/softirq-cpu-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af-%e3%82%b9%e3%83%ab%e3%83%bc%e3%83%97%e3%83%83%e3%83%88-%e6%9c%80%e9%81%a9\/\">\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306b\u304a\u3051\u308bSoftIRQ<\/a>, \u3001\u306a\u305c\u306a\u3089\u305d\u3053\u3067\u306f\u3001NIC\u3001\u30ad\u30e5\u30fc\u3001\u304a\u3088\u3073\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u306e\u9078\u629e\u304c\u30b5\u30fc\u30d3\u30b9\u54c1\u8cea\u3092\u3069\u308c\u307b\u3069\u5411\u4e0a\u3055\u305b\u308b\u304b\u304c\u660e\u3089\u304b\u306b\u306a\u308b\u304b\u3089\u3067\u3059\u3002\u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u30d7\u30e9\u30f3\u30cb\u30f3\u30b0\u3067\u306f\u3001CPU\u30b3\u30a2\u3001NIC\u306e\u6a5f\u80fd\u3001\u30e1\u30e2\u30ea\u3001NUMA\u30be\u30fc\u30f3\u3092\u8003\u616e\u306b\u5165\u308c\u3001\u4f59\u88d5\u3092\u78ba\u4fdd\u3057\u3066\u304a\u304f\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u3046\u3059\u308b\u3053\u3068\u3067\u3001 <strong>\u30d2\u30f3\u30c8<\/strong> \u5230\u7740\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306f\u9ad8\u3044\u51e6\u7406\u80fd\u529b\u3092\u7dad\u6301\u3057\u3001\u5b63\u7bc0\u3084\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u306b\u3088\u308b\u5909\u52d5\u306b\u3082\u9069\u5207\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3002 <strong>\u4ea4\u901a\u306e\u30d4\u30fc\u30af\u6642<\/strong>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/09\/linux_softirq_analyse_4839.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>softnet_stat\u306e\u8a73\u7d30\uff1a\u6570\u5b57\u304c\u672c\u5f53\u306b\u610f\u5473\u3059\u308b\u3053\u3068<\/h2>\n<p>\u7684\u3092\u7d5e\u3063\u3066\u77e5\u8b58\u3092\u78e8\u304d\u76f4\u3059\u305f\u3081\u306b\u3001\u79c1\u306f\u6b21\u306e\u3088\u3046\u306a\u672c\u3092\u8aad\u3093\u3067\u3044\u307e\u3059\u3002 <strong>\/proc\/net\/softnet_stat<\/strong> \u51e6\u7406\u306e\u7d4c\u904e\u3092\u78ba\u8a8d\u3057\u3001\u7279\u306b\u6700\u521d\u306e\u5217\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6700\u521d\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u306f\u3001CPU\u3054\u3068\u306e\u51e6\u7406\u6e08\u307f\u304a\u3088\u3073\u7834\u68c4\u3055\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u6570\u304c\u8868\u793a\u3055\u308c\u3066\u304a\u308a\u3001 <strong>3\u5217\u76ee<\/strong> \u6642\u9593\u7684\u5236\u7d04\u3092\u793a\u3057\u3066\u3044\u308b\uff08\u8981\u7d04\uff1a\u4e88\u7b97\uff0f\u6642\u9593\u304c\u4e0d\u8db3\u3057\u3066\u3044\u308b\u305f\u3081\u3001NAPI\u3092\u4e2d\u6b62\u305b\u3056\u308b\u3092\u5f97\u306a\u3044\uff09\u3002 \u30c9\u30ed\u30c3\u30d7\u6570\u3084\u6642\u9593\u7684\u5236\u7d04\u304c\u8ca0\u8377\u306b\u6bd4\u4f8b\u3057\u3066\u5897\u52a0\u3059\u308b\u5834\u5408\u306f\u3001\u4e88\u7b97\u3084\u30b3\u30a2\u30ec\u30c3\u30b7\u30f3\u30b0\u304c\u6700\u521d\u306e\u5bfe\u7b56\u3068\u306a\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001\u6301\u7d9a\u7684\u306a\u5897\u52a0\u3092\u4f34\u308f\u306a\u3044\u30d4\u30fc\u30af\u304c\u898b\u3089\u308c\u308b\u5834\u5408\u3001\u30d0\u30fc\u30b9\u30c8\u306f\u5358\u306b\u77ed\u671f\u7684\u306b\u4f5c\u696d\u3092\u96c6\u4e2d\u3055\u305b\u308b\u3060\u3051\u3067\u3042\u308b\u305f\u3081\u3001\u5927\u898f\u6a21\u306a\u4e88\u7b97\u8a2d\u5b9a\u3088\u308a\u3082\u30d0\u30c3\u30c1\u51e6\u7406\uff08GRO\uff09\u306e\u65b9\u304c\u52b9\u679c\u7684\u306a\u5834\u5408\u304c\u591a\u3044\u3067\u3059\u3002 \u65b0\u3057\u3044\u30ab\u30fc\u30cd\u30eb\u3067\u306f\u3001\u7d71\u8a08\u60c5\u5831\u306bRPS\/RFS\u304a\u3088\u3073\u30d5\u30ed\u30fc\u5236\u9650\u306e\u9805\u76ee\u304c\u8ffd\u52a0\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u304c\u4e0a\u6607\u3059\u308b\u5834\u5408\u306f\u3001RPS\u3092\u57fa\u306b\u610f\u56f3\u7684\u306b\u8ca0\u8377\u3092\u5206\u6563\u3055\u305b\u305f\u308a\u3001RFS\u306e\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u30b3\u30b9\u30c8\u304c\u30e1\u30ea\u30c3\u30c8\u3092\u4e0a\u56de\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u5834\u5408\u306fRFS\u3092\u524a\u6e1b\u3057\u305f\u308a\u3057\u307e\u3059\u3002\u79c1\u306f\u5e38\u306b\u30ab\u30a6\u30f3\u30bf\u30fc\u3092 <strong>\/proc\/softirqs<\/strong>: \u500b\u3005\u306e\u30b3\u30a2\u3067 NET_RX \u304c\u5897\u52a0\u3057\u3001\u540c\u6642\u306b softnet_stat \u3067\u306e\u6642\u9593\u7684\u5236\u7d04\u3082\u9ad8\u307e\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u307e\u305a\u306f\u5272\u308a\u5f53\u3066\uff08IRQ\/RSS\uff09\u306b\u6ce8\u529b\u3057\u3001\u305d\u306e\u6b21\u306b\u4e88\u7b97\u306e\u62e1\u5927\u3092\u691c\u8a0e\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>RPS\/RFS \u304a\u3088\u3073 XPS\uff1a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30fb\u30b9\u30c6\u30a2\u30ea\u30f3\u30b0\u3068\u30ad\u30e5\u30fc\u30fb\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3092\u78ba\u5b9f\u306b\u628a\u63e1<\/h2>\n<p>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2RSS\u304c\u306a\u3044\u3001\u3042\u308b\u3044\u306f\u4e0d\u5341\u5206\u306a\u5834\u5408\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059 <strong>\u56de\u8ee2\u4f4d\u7f6e\u691c\u51fa<\/strong> (Receive Packet Steering) \u3092\u4f7f\u7528\u3057\u3066\u3001\u53d7\u4fe1\u8ca0\u8377\u3092\u8907\u6570\u306e\u30b3\u30a2\u306b\u5206\u6563\u3055\u305b\u307e\u3059\u3002\u79c1\u306f rps_cpus \u3092\u901a\u3058\u3066\u3001\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30ef\u30fc\u30ab\u30fc\u306b\u9069\u5408\u3057\u3001\u53ef\u80fd\u306a\u9650\u308a <strong>NUMA\u306b\u8fd1\u3044<\/strong> \u3042\u308a\u307e\u3059\u3002\u591a\u304f\u306e\u30d5\u30ed\u30fc\u3067\u306f\u3001\u79c1\u306f <strong>RFS<\/strong> (Receive Flow Steering) \u306b\u3088\u308a\u3001\u7740\u4fe1\u30d1\u30b1\u30c3\u30c8\u306f\u5bfe\u5fdc\u3059\u308b\u30bd\u30b1\u30c3\u30c8\u304c\u51e6\u7406\u3055\u308c\u308b\u5834\u6240\u3067\u51e6\u7406\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u3002\u30d5\u30ed\u30fc\u30c6\u30fc\u30d6\u30eb\u304c\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306a\u3089\u306a\u3044\u9650\u308a\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u5c40\u6240\u6027\u306b\u306f\u6709\u52b9\u3067\u3042\u308b\u3002\u9001\u4fe1\u5074\u3067\u306f\u3001 <strong>\u30a8\u30c3\u30af\u30b9\u30d4\u30fc\u30a8\u30b9<\/strong> \uff08Transmit Packet Steering\uff09\uff1a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306eCPU\u3078\u306e\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u5408\u308f\u305b\u3066TX\u30ad\u30e5\u30fc\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3002\u305d\u306e\u76ee\u7684\u306f\u30011\u3064\u306e\u30d5\u30ed\u30fc\u304c\u5e38\u306b\u540c\u3058RX\/TX\u30ad\u30e5\u30fc\u304a\u3088\u3073\u540c\u3058\u30ab\u30fc\u30cd\u30eb\u3092\u7d4c\u7531\u3059\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3042\u308a\u3001\u3053\u308c\u306b\u3088\u308a\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u4f4e\u6e1b\u3055\u308c\u3001 <strong>GRO<\/strong>-\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u304c\u5927\u304d\u304f\u306a\u308b\u3002\u79c1\u306f\u5e38\u306b\u6bb5\u968e\u7684\u306b\u5206\u6563\u51e6\u7406\u3092\u30c6\u30b9\u30c8\u3057\u3066\u3044\u308b\u3002\u307e\u305a\u5c11\u6570\u306e\u30ad\u30e5\u30fc\u3067RPS\u3092\u6709\u52b9\u306b\u3057\u3001\u305d\u306e\u5f71\u97ff\uff08\u30c9\u30ed\u30c3\u30d7\u3001%soft\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\uff09\u3092\u6e2c\u5b9a\u3057\u3066\u304b\u3089\u3001RFS\/XPS\u3092\u8ffd\u52a0\u3059\u308b\u3002 RPS\u306b\u3088\u3063\u3066\u30b3\u30a2\u304c\u904e\u8ca0\u8377\u306b\u306a\u3063\u305f\u308a\u3001L3\u30d2\u30c3\u30c8\u7387\u304c\u4f4e\u4e0b\u3057\u305f\u308a\u3057\u305f\u5834\u5408\u306f\u3001CPU\u30de\u30b9\u30af\u3092\u518d\u3073\u7e2e\u5c0f\u3059\u308b\u304b\u3001\u30ad\u30e5\u30fc\u3092\u8a72\u5f53\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u306e\u30b3\u30a2\u306b\u3088\u308a\u5bc6\u306b\u7d10\u3065\u3051\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>NUMA\u3001CPU\u306e\u5206\u96e2\u3001\u304a\u3088\u3073\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u9593\u306e\u76f8\u4e92\u4f5c\u7528<\/h2>\n<p>\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u304cNUMA\u9593\u3092\u5e83\u304f\u79fb\u52d5\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u3069\u3093\u306a\u306b\u512a\u308c\u305f\u4e88\u7b97\u914d\u5206\u3084\u5272\u308a\u5f53\u3066\u3092\u884c\u3063\u3066\u3082\u610f\u5473\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u79c1\u306f\u3001NIC\u5272\u308a\u8fbc\u307f\u3001NAPI\u306e\u51e6\u7406\u3001\u304a\u3088\u3073\u30ea\u30af\u30a8\u30b9\u30c8\u5143\u3068\u306a\u308b\u30d7\u30ed\u30bb\u30b9\u304c\u3001\u53ef\u80fd\u306a\u9650\u308a\u540c\u3058 <strong>NUMA\u30c9\u30e1\u30a4\u30f3<\/strong> \u306e\u307e\u307e\u306b\u3057\u307e\u3059\u3002\u5c02\u7528\u306e\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30b3\u30a2\u3084\u30ec\u30a4\u30c6\u30f3\u30b7\u30b3\u30a2\u3092\u5099\u3048\u305f\u69cb\u6210\u3067\u306f\u3001CPU\u30dd\u30ea\u30b7\u30fc\u3084Cgroup\u30dd\u30ea\u30b7\u30fc\u3092\u7528\u3044\u3066\u3053\u308c\u3089\u3092\u9694\u96e2\u3057\u3001\u610f\u56f3\u7684\u306bSoftIRQ\u306e\u51e6\u7406\u3092\u305d\u3053\u306b\u5165\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002. <strong>ksoftirqd<\/strong> \u9694\u96e2\u3055\u308c\u305f\u30b3\u30a2\u306b\u5230\u9054\u3057\u3066\u306f\u306a\u3089\u306a\u3044\u3002\u305d\u3046\u3057\u306a\u3044\u3068\u3001\u30d1\u30b1\u30c3\u30c8\u304c\u6c17\u3065\u304b\u308c\u306a\u3044\u307e\u307e\u84c4\u7a4d\u3055\u308c\u3066\u3057\u307e\u3046\u3002\u9006\u306b\u3001\u9694\u96e2\u3055\u308c\u305f\u30b3\u30a2\u304c\u30c7\u30fc\u30bf\u30d1\u30b9\u306e\u7d42\u7aef\u3068\u306a\u308b\u5834\u5408\u3001IRQ\u51e6\u7406\u304c\u5b8c\u5168\u306b\u6b20\u5982\u3057\u305f\u72b6\u614b\u306b\u306a\u3063\u3066\u306f\u306a\u3089\u306a\u3044\u2015\u2015\u3053\u308c\u306f\u660e\u78ba\u306a\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3068 <strong>\u30cf\u30a6\u30b9\u30ad\u30fc\u30d4\u30f3\u30b0<\/strong>- \u6226\u7565\u306f\u5fc5\u9808\u3067\u3059\u3002\u53b3\u683c\u306aSLO\u304c\u6c42\u3081\u3089\u308c\u308b\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3067\u306f\u3001NAPI\u5b9f\u884c\u3092\u59a8\u3052\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u904e\u5ea6\u306b\u653b\u6483\u7684\u306aSCHED_FIFO\/RR\u512a\u5148\u5ea6\u8a2d\u5b9a\u306f\u907f\u3051\u3066\u3044\u307e\u3059\u3002 \u30e9\u30f3\u30ad\u30e5\u30fc\u306e\u9577\u3055\u3001\u30a6\u30a7\u30a4\u30af\u30a2\u30c3\u30d7\u3001\u30d7\u30ea\u30a8\u30f3\u30d7\u30b7\u30e7\u30f3\u7387\u3092\u76e3\u8996\u3057\u3066\u3044\u307e\u3059\u3002\u30a2\u30d7\u30ea\u306e\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u6027\u304c\u9ad8\u307e\u308b\u306b\u3064\u308c\u3066\u30bd\u30d5\u30c8IRQ\u6642\u9593\u304c\u9577\u304f\u306a\u308b\u5834\u5408\u306f\u3001\u4e00\u5f8b\u306b\u4e88\u7b97\u3092\u5897\u3084\u3059\u306e\u3067\u306f\u306a\u304f\u3001\u7c92\u5ea6\u3084\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3092\u8abf\u6574\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>qdisc\u3001\u30aa\u30d5\u30ed\u30fc\u30c9\u3001Busy-Poll\uff1a\u30ec\u30a4\u30c6\u30f3\u30b7\u3068\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u3068\u308b<\/h2>\n<p>\u30a8\u30b0\u30ec\u30b9\u30d1\u30b9\u3067\u306f\u3001\u305d\u308c\u305e\u308c <strong>\u30ad\u30e5\u30fc\u30c7\u30a3\u30b9\u30af<\/strong>-CPU\u6642\u9593\u64cd\u4f5c\u3002\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306b\u5408\u308f\u305b\u3066\u624b\u6cd5\u3092\u9078\u629e\u3057\u307e\u3059\u3002fq_codel\u306f\u30d0\u30c3\u30d5\u30a1\u30d6\u30ed\u30fc\u30c8\u5bfe\u7b56\u3068\u306a\u308a\u3001\u30d0\u30fc\u30b9\u30c8\u3092\u5e73\u6ed1\u5316\u3057\u307e\u3059\u304c\u3001\u4e00\u65b9 <em>mq<\/em>-\u30de\u30eb\u30c1\u30ad\u30e5\u30fcNIC\u306e\u3055\u307e\u3056\u307e\u306a\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002\u5b89\u5b9a\u3057\u305f\u30ea\u30f3\u30af\u4e0a\u3067\u306e\u7d14\u7c8b\u306a\u30c7\u30fc\u30bf\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u306b\u304a\u3044\u3066\u306f\u3001\u3088\u308a\u8efd\u91cf\u306aqdisc\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u306e\u30d4\u30fc\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30a4\u30f3\u30b0\u30ec\u30b9\u5074\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u5fae\u8abf\u6574\u3092\u884c\u3046\u3068\u52b9\u679c\u7684\u3067\u3059\u3002 <strong>GRO\/TSO\/GSO<\/strong>: \u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u304c\u5927\u304d\u304f\u306a\u308b\u3068\u3001SoftIRQ\u306e\u767a\u751f\u983b\u5ea6\u306f\u4f4e\u4e0b\u3057\u307e\u3059\u304c\u3001\u9650\u754c\u72b6\u614b\u3067\u306f\u30b9\u30bf\u30c3\u30af\u5185\u306e\u30d1\u30b1\u30c3\u30c8\u51e6\u7406\u6642\u9593\u304c\u9577\u304f\u306a\u308a\u307e\u3059\u3002GRO\u30d5\u30e9\u30c3\u30b7\u30e5\u9593\u9694\u3084\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30aa\u30d5\u30ed\u30fc\u30c9\u304c\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u60aa\u5f71\u97ff\u3092\u53ca\u307c\u3059\u307b\u3069\u5927\u304d\u306a\u96c6\u7d04\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u6e2c\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u6975\u3081\u3066\u91cd\u8981\u306a\u30d1\u30b9\u306b\u3064\u3044\u3066\u306f\u3001 <strong>busy_poll<\/strong> \u307e\u305f\u3001busy_read \u3092\u9069\u5ea6\u306b\u8abf\u6574\u3057\u3066\u3001\u30c9\u30e9\u30a4\u30d0\u304b\u3089\u30d1\u30b1\u30c3\u30c8\u3092\u80fd\u52d5\u7684\u306b\u53d6\u308a\u51fa\u3057\u307e\u3059\u2015\u2015\u305f\u3060\u3057\u3001\u4ed6\u306e\u30bf\u30b9\u30af\u304c\u30ea\u30bd\u30fc\u30b9\u4e0d\u8db3\u306b\u9665\u3089\u306a\u3044\u3088\u3046\u3001\u6ce8\u610f\u6df1\u304f\u76e3\u8996\u3057\u306a\u304c\u3089\u884c\u3044\u307e\u3059\u3002\u540c\u69d8\u306b\u3001\u79c1\u306f <strong>\u5272\u308a\u8fbc\u307f\u5408\u4f53<\/strong> \u30d0\u30fc\u30b9\u30c8\u7684\u306a\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u6025\u5897\u306b\u5bfe\u5fdc\u3059\u308b\u306b\u306f\u3001\u30de\u30a4\u30af\u30ed\u79d2\u5358\u4f4d\u3067\u9045\u5ef6\u3092\u5c11\u3057\u5897\u3084\u3059\u3068\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u304c\u5411\u4e0a\u3057\u307e\u3059\u304c\u3001\u5897\u3089\u3057\u3059\u304e\u308b\u3068ACK\u306e\u9001\u4fe1\u304c\u9045\u308c\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u6642\u9593\u304c\u9577\u304f\u306a\u308a\u307e\u3059\u3002\u91cd\u8981\u306a\u306e\u306f\u3001\u5404\u5909\u66f4\u3092\u500b\u5225\u306b\u8a55\u4fa1\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u30a8\u30df\u30e5\u30ec\u30fc\u30c8\u3055\u308c\u305f\u30d0\u30fc\u30b9\u30c8\u3001\u5b9f\u969b\u306e\u751f\u7523\u30d4\u30fc\u30af\u3001\u304a\u3088\u3073\u30a2\u30a4\u30c9\u30eb\u6642\u9593\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u7570\u306a\u308b\u9045\u5ef6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u793a\u3059\u304b\u3089\u3067\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/09\/linux-softirq-analyse-1934.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u8a3a\u65ad\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u3068\u5b89\u5168\u306a\u30ed\u30fc\u30eb\u30d0\u30c3\u30af<\/h2>\n<p>\u79c1\u306f\u5909\u66f4\u4f5c\u696d\u3092\u884c\u3046\u969b\u3001\u5e38\u306b\u4ee5\u4e0b\u306e\u7c21\u5358\u306a\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u6cbf\u3063\u3066\u9032\u3081\u3066\u3044\u307e\u3059\uff1a1) \u75c7\u72b6\u3092\u78ba\u8a8d\u3059\u308b\uff08ksoftirqd\u3001%soft\u3001Drops\uff09\u3002 2) \u5272\u308a\u5f53\u3066\u72b6\u6cc1\u3092\u78ba\u8a8d\u3059\u308b\uff08\/proc\/interrupts\u3001Queue\u2192CPU\u3001RSS\/RPS\u30b9\u30c6\u30fc\u30bf\u30b9\uff09\u30023) \u4e88\u7b97\u3092\u8abf\u6574\u3057\u3001\u305d\u306e\u52b9\u679c\u3092 <strong>softnet_stat<\/strong> \u76e3\u8996\u3059\u308b\uff08\u6642\u9593\u7684\u30d7\u30ec\u30c3\u30b7\u30e3\u30fc\u304c\u8efd\u6e1b\u3055\u308c\u3001\u30c9\u30ed\u30c3\u30d7\u304c\u6a2a\u3070\u3044\u306b\u306a\u308b\uff09\u30024) \u30aa\u30d5\u30ed\u30fc\u30c9\uff0f\u30b3\u30a2\u30ec\u30c3\u30b7\u30f3\u30b0\u3092\u5fae\u8abf\u6574\u3057\u3001qdisc \u3092\u78ba\u8a8d\u3059\u308b\u30025) NUMA\uff0fCPU \u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u304a\u3088\u3073 cgroups \u3092\u518d\u78ba\u8a8d\u3059\u308b\u3002\u5404\u30b9\u30c6\u30c3\u30d7\u306f\u3001\u30e1\u30c8\u30ea\u30af\u30b9\u306e\u660e\u78ba\u306a\u6539\u5584\u3001\u3042\u308b\u3044\u306f <strong>\u30ed\u30fc\u30eb\u30d0\u30c3\u30af<\/strong> \u76f4\u8fd1\u306e\u826f\u597d\u306a\u72b6\u614b\u307e\u3067\u3002\u76ee\u6a19\u5024\u3068\u5b9f\u6e2c\u5024\uff08\u30ec\u30a4\u30c6\u30f3\u30b7P95\/P99\u3001\u30b3\u30a2\u3054\u3068\u306e%soft\u3001\u30c9\u30ed\u30c3\u30d7\u7387\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5207\u308a\u66ff\u3048\uff09\u3092\u8a18\u9332\u3057\u3001\u305d\u306e\u5f8c\u306e\u53cd\u5fa9\u4f5c\u696d\u304c\u95c7\u96f2\u306b\u884c\u308f\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3002 \u3044\u304f\u3064\u304b\u306e\u5c0f\u3055\u306a\u6539\u5584\u3067\u3082\u8ca0\u8377\u8efd\u6e1b\u306b\u3064\u306a\u304c\u3089\u306a\u3044\u5834\u5408\u306f\u3001\u305d\u306e\u4f5c\u696d\u3092\u4e2d\u65ad\u3057\u3001\u69cb\u9020\u7684\u306a\u539f\u56e0\uff08\u30ad\u30e5\u30fc\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3001\u30a2\u30d7\u30ea\u306e\u30d6\u30ed\u30c3\u30af\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u5f71\u97ff\uff09\u3092\u63a2\u308a\u307e\u3059\u3002 \u3053\u306e\u898f\u5f8b\u3092\u5b88\u308b\u3053\u3068\u3067\u3001\u8aa4\u3063\u305f\u76f8\u95a2\u95a2\u4fc2\u3092\u9632\u304e\u3001\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u6570\u5024\u306f\u5411\u4e0a\u3059\u308b\u3082\u306e\u306e\u3001\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u6027\u3084\u5b89\u5b9a\u6027\u3092\u640d\u306a\u3046\u300c\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u306e\u60aa\u5faa\u74b0\u300d\u304b\u3089\u8eab\u3092\u5b88\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n<h2>\u5883\u754c\u30b1\u30fc\u30b9\u3068\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u660e\u78ba\u306b\u533a\u5225\u3059\u308b<\/h2>\n<p>\u79c1\u306f\u3001\u30d0\u30eb\u30af\u8ee2\u9001\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u91cd\u8981\u306aAPI\u3001\u304a\u3088\u3073\u30d0\u30fc\u30b9\u30c8\u578b\u306e\u51e6\u7406\u3092\u610f\u56f3\u7684\u306b\u533a\u5225\u3057\u3066\u3044\u307e\u3059\u3002 <strong>UDP<\/strong>-\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3002\u30d0\u30eb\u30af\u30c7\u30fc\u30bf\u306b\u3064\u3044\u3066\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u640d\u5931\u304c\u767a\u751f\u3057\u306a\u3044\u9650\u308a\u3001\u30d0\u30c3\u30c1\u51e6\u7406\u3068\u30b3\u30a2\u30ea\u30bb\u30b7\u30f3\u30b0\u3092\u65e9\u3081\u306b\u9069\u7528\u3057\u307e\u3059\u3002API\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3067\u306f\u3001\u305f\u3068\u3048\u540d\u76ee\u4e0a\u306e\u6700\u5927\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u304c\u591a\u5c11\u4f4e\u4e0b\u3057\u3066\u3082\u3001\u5747\u4e00\u306a\u5206\u6563\u3001\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u306e\u5236\u9650\u3001\u304a\u3088\u3073\u5b89\u5b9a\u3057\u305f\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\uff08E2E\uff09\u30ec\u30a4\u30c6\u30f3\u30b7\u3092\u512a\u5148\u3057\u307e\u3059\u3002 UDP\u30d0\u30fc\u30b9\u30c8\u3078\u306e\u5bfe\u7b56\u3068\u3057\u3066\u306f\u3001\u30ad\u30e5\u30fc\u306e\u62e1\u5f35\u3068\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u8a2d\u5b9a\u3092\u512a\u5148\u7684\u306b\u6d3b\u7528\u3057\u307e\u3059\u3002\u305d\u3046\u3057\u306a\u3044\u3068\u3001\u4e88\u7b97\u3092\u904e\u5270\u306b\u8a2d\u5b9a\u3057\u305f\u7d50\u679c\u3001\u30d8\u30c3\u30c9\u30fb\u30aa\u30d6\u30fb\u30e9\u30a4\u30f3\u30fb\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u304c\u5897\u52a0\u3059\u308b\u3060\u3051\u3067\u3059\u3002 \u74b0\u5883\u5185\u3067\u30b3\u30f3\u30c6\u30ca\u3084\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u30db\u30c3\u30d7\u304c\u591a\u6570\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u8ffd\u52a0\u306e\u30b9\u30bf\u30c3\u30af\u51e6\u7406\u3092\u60f3\u5b9a\u3057\u3001SoftIRQ\u8ca0\u8377\u3092\u3088\u308a\u5e83\u7bc4\u56f2\u306b\u5206\u6563\u3055\u305b\u307e\u3059\u3002 \u307e\u305f\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\uff0fConntrack\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306b\u3064\u3044\u3066\u306f\u5225\u9014\u8a55\u4fa1\u3092\u884c\u3044\u307e\u3059\u3002\u30c6\u30fc\u30d6\u30eb\u304c\u9650\u754c\u306b\u9054\u3059\u308b\u3068\u3001IRQ\u306e\u5206\u6563\u304c\u3069\u308c\u307b\u3069\u9069\u5207\u3067\u3042\u3063\u3066\u3082\u3001\u5fc5\u7136\u7684\u306bSoftIRQ\u306e\u8ca0\u8377\u306f\u5897\u52a0\u3057\u307e\u3059\u3002\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3054\u3068\u306e\u30d1\u30b9\u304c\u4e00\u8cab\u3057\u3066\u30b9\u30ea\u30e0\u306b\u306a\u3063\u3066\u521d\u3081\u3066\u3001\u6700\u5f8c\u306e\u6570\u30d1\u30fc\u30bb\u30f3\u30c8\u306e\u5fae\u8abf\u6574\u3092\u884c\u3046\u4fa1\u5024\u304c\u751f\u307e\u308c\u308b\u306e\u3067\u3059\u3002.<\/p>\n\n<h2>\u30af\u30e9\u30a6\u30c9\u304a\u3088\u3073\u30b3\u30f3\u30c6\u30ca\u74b0\u5883\u306b\u304a\u3051\u308bSoftIRQ<\/h2>\n<p>\u4eee\u60f3\u5316\u74b0\u5883\u3067\u306f\u3001vSwitch\u3001\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u30db\u30b9\u30c8\u30b9\u30bf\u30c3\u30af\u3092\u901a\u3058\u3066\u8ca0\u8377\u304c\u79fb\u52d5\u3059\u308b\u305f\u3081\u3001\u30b2\u30b9\u30c8\u3068\u30db\u30b9\u30c8\u306e\u4e21\u65b9\u306e<strong>\u6307\u6a19<\/strong> \u5206\u6790\u3059\u308b\u3002\u30db\u30b9\u30c8\u5074\u3067SoftIRQ\u306e\u51e6\u7406\u6642\u9593\u304c\u9577\u304f\u306a\u308b\u3068\u3001\u30b2\u30b9\u30c8\u30b7\u30b9\u30c6\u30e0\u304c\u4e00\u898b\u4f59\u88d5\u304c\u3042\u308b\u3088\u3046\u306b\u898b\u3048\u3066\u3082\u3001\u30b3\u30f3\u30c6\u30ca\u3084VM\u306e\u52d5\u4f5c\u304c\u76f4\u3061\u306b\u920d\u5316\u3059\u308b\u3002 <strong>\u4ed5\u4e8b<\/strong>. \u305d\u3053\u3067\u3001\u7269\u7406NIC\u3067\u306e\u30aa\u30d5\u30ed\u30fc\u30c9\u3068\u30b3\u30a2\u30ec\u30c3\u30b7\u30f3\u30b0\u3092\u78ba\u8a8d\u3057\u3064\u3064\u3001\u30db\u30b9\u30c8\u5074\u306eRPS\/RFS\u304c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u51e6\u7406\u30d1\u30b9\u3092\u9069\u5207\u306b\u5206\u6563\u3055\u305b\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002\u30b3\u30f3\u30c6\u30ca\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306b\u3064\u3044\u3066\u306f\u3001\u91cd\u8981\u306a\u30b5\u30fc\u30d3\u30b9\u304c <strong>\u30ad\u30e5\u30fc<\/strong> \u9913\u6b7b\u3059\u308b\u3002RSS\u3092\u5099\u3048\u305f\u30de\u30eb\u30c1\u30ad\u30e5\u30fc\u5bfe\u5fdc\u306evNIC\u306f\u3001\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3068\u30ad\u30e5\u30fc\u30de\u30c3\u30d4\u30f3\u30b0\u304c\u9069\u5207\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u4e26\u884c\u51e6\u7406\u6027\u80fd\u3092\u5411\u4e0a\u3055\u305b\u308b\u3002\u3053\u306e\u89b3\u70b9\u304b\u3089\u3001\u30c7\u30fc\u30bf\u30d1\u30b9\u3092\u77ed\u304f\u4fdd\u3061\u3001\u5b89\u5b9a\u5316\u3055\u305b\u308b <strong>\u9045\u5ef6\u6642\u9593<\/strong> 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\u3084\u30aa\u30d5\u30ed\u30fc\u30c9\u3068\u3044\u3063\u305f\u30d0\u30c3\u30c1\u51e6\u7406\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6700\u9069\u5316\u3057\u307e\u3059\u3002\u5404\u5909\u66f4\u306f\u6700\u5c0f\u9650\u306b\u3068\u3069\u3081\u3001\u305d\u306e\u52b9\u679c\u3092\u6e2c\u5b9a\u3057\u3001\u30d7\u30e9\u30b9\u306e\u52b9\u679c\u304c\u78ba\u8a8d\u3055\u308c\u305f\u5834\u5408\u306b\u306e\u307f\u7d99\u7d9a\u3057\u3066\u3001\u30d1\u30b1\u30c3\u30c8\u30c9\u30ed\u30c3\u30d7\u304c\u89e3\u6d88\u3055\u308c\u308b\u307e\u3067\u884c\u3044\u307e\u3059\u3002 <strong>\u9045\u5ef6\u6642\u9593<\/strong> \u4f4e\u4e0b\u3059\u308b\u3002\u3053\u306e\u898f\u5f8b\u306b\u3088\u308a\u3001\u526f\u4f5c\u7528\u3092\u9632\u304e\u3001CPU \u3067\u306e\u4e26\u884c\u51e6\u7406\u3092\u7dad\u6301\u3057\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30d4\u30fc\u30af\u6642\u3067\u3082\u30b5\u30fc\u30d3\u30b9\u3092\u7dad\u6301\u3059\u308b\u3002 <strong>\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6<\/strong>. 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