{"id":20626,"date":"2026-08-14T08:35:54","date_gmt":"2026-08-14T06:35:54","guid":{"rendered":"https:\/\/webhosting.de\/perf-top-linux-hotspots-kernel-tools\/"},"modified":"2026-08-14T08:35:54","modified_gmt":"2026-08-14T06:35:54","slug":"perf-top-linux-%e3%83%9b%e3%83%83%e3%83%88%e3%82%b9%e3%83%9d%e3%83%83%e3%83%88-%e3%82%ab%e3%83%bc%e3%83%8d%e3%83%ab-%e3%83%84%e3%83%bc%e3%83%ab","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/perf-top-linux-hotspots-kernel-tools\/","title":{"rendered":"perf top Linux\uff1a\u30ab\u30fc\u30cd\u30eb\u5185\u306eCPU\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u3092\u7279\u5b9a\u3059\u308b"},"content":{"rendered":"<p>\u3068\u4e00\u7dd2\u306b <strong>perf top<\/strong> Linux\u3067\u306f\u3001\u73fe\u5728\u3069\u306e\u30ab\u30fc\u30cd\u30eb\u95a2\u6570\u304c\u6700\u3082\u591a\u304f\u306eCPU\u6642\u9593\u3092\u6d88\u8cbb\u3057\u3066\u3044\u308b\u304b\u3001\u307e\u305f\u3069\u3053\u306b\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u304c\u751f\u3058\u3066\u3044\u308b\u304b\u3092\u3001\u308f\u305a\u304b\u6570\u79d2\u3067\u7279\u5b9a\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u660e\u78ba\u306a\u624b\u9806\u306b\u6cbf\u3063\u3066\u3001\u30e9\u30a4\u30d6\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u3092\u7279\u5b9a\u3057\u3001\u51fa\u529b\u7d50\u679c\u3092\u6b63\u78ba\u306b\u89e3\u91c8\u3057\u3001\u305d\u3053\u304b\u3089\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u30e1\u30e2\u30ea\u306e\u8fc5\u901f\u306a\u6700\u9069\u5316\u7b56\u3092\u5c0e\u304d\u51fa\u3059\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n\n<p>\u79c1\u306f\u3001\u306e\u30e9\u30a4\u30d6\u30d3\u30e5\u30fc\u3092 <strong>\u30d1\u30fc\u30d5\u30a7\u30af\u30c8<\/strong> \u5f37\u529b\u306a\u51fa\u767a\u70b9\u3068\u3057\u3066\u6700\u9069\u3067\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u6700\u3082\u6642\u9593\u3092\u6d6a\u8cbb\u3057\u3066\u3044\u308b\u7b87\u6240\u3092\u5373\u5ea7\u306b\u53ef\u8996\u5316\u3057\u3066\u304f\u308c\u308b\u304b\u3089\u3067\u3059\u3002\u5404\u30a2\u30a4\u30b3\u30f3\u306e\u5272\u5408\u3092\u898b\u308b\u3053\u3068\u3067\u3001\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u304c <strong>\u30ab\u30fc\u30cd\u30eb<\/strong> \u3042\u308b\u3044\u306f\u30e6\u30fc\u30b6\u30fc\u30b9\u30da\u30fc\u30b9\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u3002\u7e70\u308a\u8fd4\u3057\u73fe\u308c\u308b\u30d1\u30bf\u30fc\u30f3\u304b\u3089\u3001\u30ed\u30c3\u30af\u3001IRQ\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u30e1\u30e2\u30ea\u306e\u3069\u308c\u304c\u4e3b\u306a\u539f\u56e0\u304b\u3092\u7279\u5b9a\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u3088\u308a\u8a73\u7d30\u306a\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u554f\u984c\u7b87\u6240\u3092\u7d5e\u308a\u8fbc\u307f\u3001\u8ca0\u8377\u304c\u304b\u304b\u3063\u305f\u72b6\u614b\u3067\u5909\u66f4\u5185\u5bb9\u3092\u76f4\u63a5\u691c\u8a3c\u3057\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u6bb5\u968e\u7684\u306b <strong>CPU<\/strong>-\u7a3c\u50cd\u7387\u3092\u5411\u4e0a\u3055\u305b\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u3092\u6301\u7d9a\u7684\u306b\u4f4e\u6e1b\u3059\u308b\u3002.<\/p>\n<ul>\n  <li><strong>\u30e9\u30a4\u30d6\u30fb\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8<\/strong> \u7279\u5b9a\u3057\u3001\u512a\u5148\u9806\u4f4d\u3092\u3064\u3051\u308b<\/li>\n  <li><strong>\u5272\u5408<\/strong> \u6a5f\u80fd\u3054\u3068\u306b\u6b63\u3057\u304f\u89e3\u91c8\u3059\u308b<\/li>\n  <li><strong>\u4e2d\u6838\u7684\u306a\u7126\u70b9<\/strong> \u8a2d\u5b9a\uff1aIRQ\u3001\u30ed\u30c3\u30af\u3001\u30e1\u30e2\u30ea<\/li>\n  <li><strong>\u30ef\u30fc\u30af\u30d5\u30ed\u30fc<\/strong>: \u30c8\u30c3\u30d7 \u2192 \u8a18\u9332 \u2192 \u30ec\u30dd\u30fc\u30c8<\/li>\n  <li><strong>\u6700\u9069\u5316<\/strong> \u7684\u3092\u7d5e\u3063\u3066\u691c\u8a3c\u3059\u308b<\/li>\n<\/ul>\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\/08\/cpu-hotspots-linux-kernel-4872.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u300cPerf Top\u300d\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\u307e\u305f\u3001\u3069\u306e\u3088\u3046\u306a\u7528\u9014\u306b\u4f7f\u3044\u307e\u3059\u304b\uff1f<\/h2>\n\n<p>\u79c1\u306f\u3053\u3046\u3057\u3066\u3044\u308b\u3002 <strong>perf top<\/strong>, \u3001\u5b9f\u884c\u4e2d\u306e\u8ca0\u8377\u306b\u304a\u3044\u3066\u3001\u3069\u306e\u30b7\u30f3\u30dc\u30eb\u304cCPU\u6642\u9593\u3092\u6700\u3082\u591a\u304f\u6d88\u8cbb\u3057\u3066\u3044\u308b\u304b\u3092\u5373\u5ea7\u306b\u78ba\u8a8d\u3059\u308b\u305f\u3081\u3067\u3059\u3002\u3053\u306e\u30c4\u30fc\u30eb\u306f\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30fb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30fb\u30ab\u30a6\u30f3\u30bf\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001CPU\u6642\u9593\u3092\u6700\u3082\u591a\u304f\u6d88\u8cbb\u3057\u3066\u3044\u308b\u95a2\u6570\u306e\u6700\u65b0\u30e9\u30f3\u30ad\u30f3\u30b0\u3092\u77ed\u3044\u9593\u9694\u3067\u8868\u793a\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u300eLinux-Magazin\u300f\u8a8c\u306b\u3088\u308b\u3068\u3001perf\u306f\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u3068\u30c8\u30ec\u30fc\u30b9\u306e\u4e21\u65b9\u3092\u3053\u306a\u3059\u305f\u3081\u3001 <strong>\u30e9\u30a4\u30d6\u30d3\u30e5\u30fc<\/strong> \u3088\u308a\u8a73\u7d30\u306a\u5206\u6790\u3068\u30b7\u30fc\u30e0\u30ec\u30b9\u306b\u7d50\u3073\u3064\u3051\u307e\u3059\u3002\u901a\u5e38\u306e\u30d5\u30ed\u30fc\u3067\u306f\u3001\u305d\u306e\u77ac\u9593\u306e\u72b6\u6cc1\u3092\u300cperf record\u300d\u3068\u300cperf report\u300d\u3067\u88dc\u5b8c\u3057\u3001\u30b3\u30fc\u30eb\u30b0\u30e9\u30d5\u3084\u6b63\u78ba\u306a\u5b9f\u884c\u30d1\u30b9\u3092\u8abf\u67fb\u3057\u307e\u3059\u3002\u305d\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u6b21\u306e\u6838\u5fc3\u7684\u306a\u7591\u554f\u306b\u7b54\u3048\u308b\u306e\u3067\u3059\u3002\u300c\u3069\u3053\u3067 <strong>CPU<\/strong> \u4eca\u307e\u3055\u306b\u305d\u306e\u51e6\u7406\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u306e\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u30bf\u30c3\u30af\u3001\u30e1\u30e2\u30ea\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u3001\u305d\u308c\u3068\u3082\u30c9\u30e9\u30a4\u30d0\u306e\u4e2d\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n\n<h2>perf top \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u8d77\u52d5\u3059\u308b<\/h2>\n\n<p>\u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u3088\u308b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u5f8c\u3001\u6b21\u306e\u3088\u3046\u306b\u5b9f\u884c\u3057\u307e\u3059\u3002 <strong>\u30d1\u30fc\u30d5\u30a7\u30af\u30c8<\/strong> top \u306f\u901a\u5e38\u3001\u30ab\u30fc\u30cd\u30eb\u30b7\u30f3\u30dc\u30eb\u3084\u30b7\u30b9\u30c6\u30e0\u30a4\u30d9\u30f3\u30c8\u304c\u8868\u793a\u3055\u308c\u308b\u3088\u3046\u3001\u62e1\u5f35\u6a29\u9650\u3067\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u300cperf top\u300d\u3068\u5165\u529b\u3059\u308b\u3060\u3051\u3067\u7c21\u5358\u306b\u8d77\u52d5\u3067\u304d\u3001\u6700\u521d\u306e\u30e9\u30a4\u30d6\u30d3\u30e5\u30fc\u3092\u8868\u793a\u3057\u3066\u3001\u4e3b\u8981\u306a\u6a5f\u80fd\u3092\u628a\u63e1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u500b\u3005\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u7126\u70b9\u3092\u5f53\u3066\u305f\u3044\u5834\u5408\u306f\u3001 <strong>PID<\/strong> -p \u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u958b\u59cb\u3057\u307e\u3059\u3002\u7279\u5b9a\u306e CPU \u306b\u3064\u3044\u3066\u306f\u3001\u30ea\u30b9\u30c8\u307e\u305f\u306f\u7bc4\u56f2\u3092\u6307\u5b9a\u3057\u3066 -C \u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u30a4\u30d9\u30f3\u30c8\u306f -e \u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u6307\u5b9a\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001cpu-cycles\u3001instructions\u3001branch-misses \u306a\u3069\u3001\u89e3\u660e\u3057\u305f\u3044\u8ab2\u984c\u306b\u5fdc\u3058\u3066\u9078\u3073\u307e\u3059\u3002 \u518d\u73fe\u6027\u306e\u3042\u308b\u7d50\u679c\u3092\u5f97\u308b\u305f\u3081\u306b\u3001\u5b9f\u969b\u306e\u8ca0\u8377\u304c\u304b\u304b\u3063\u3066\u3044\u308b\u72b6\u614b\u3067\u6e2c\u5b9a\u3092\u958b\u59cb\u3057\u3001 <strong>\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8<\/strong> \u306f\u3063\u304d\u308a\u3068\u793a\u3055\u308c\u3001\u30a2\u30a4\u30c9\u30eb\u6642\u306e\u30ce\u30a4\u30ba\u306b\u57cb\u3082\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\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\/08\/cpuhotspotslinux3746.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u3053\u306e\u53f7\u306e\u8aad\u307f\u65b9<\/h2>\n\n<p>\u3053\u306e\u30ea\u30b9\u30c8\u3067\u306f\u3001\u307e\u305a <strong>\u30d1\u30fc\u30bb\u30f3\u30c8\u5024<\/strong> \u5404\u30b7\u30f3\u30dc\u30eb\u3054\u3068\u306b\u3001\u305d\u308c\u3089\u304c\u76f8\u5bfe\u7684\u306a\u6642\u9593\u914d\u5206\u3092\u53cd\u6620\u3057\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002 \u30b7\u30b9\u30c6\u30e0\u95a2\u6570\u306e\u5272\u5408\u304c\u9ad8\u3044\u5834\u5408\u306f\u30ab\u30fc\u30cd\u30eb\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u793a\u5506\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u30b9\u30da\u30fc\u30b9\u306e\u30b7\u30f3\u30dc\u30eb\u304c\u652f\u914d\u7684\u306a\u5834\u5408\u306f\u30a2\u30d7\u30ea\u30ed\u30b8\u30c3\u30af\u306b\u8d77\u56e0\u3059\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3002\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u30eb\u30fc\u30c1\u30f3\u304c\u591a\u304f\u898b\u3089\u308c\u308b\u5834\u5408\u306f\u3001\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30b9\u30ec\u30c3\u30c9\u306e\u904e\u5270\u3001\u4e0d\u9069\u5207\u306a\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3001\u3042\u308b\u3044\u306f\u4e0d\u9069\u5207\u306a\u512a\u5148\u9806\u4f4d\u3092\u7591\u3046\u3002 \u30e1\u30e2\u30ea\u95a2\u9023\u306e\u95a2\u6570\u304c\u4e0a\u4f4d\u306b\u8868\u793a\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u5272\u308a\u5f53\u3066\u30d1\u30bf\u30fc\u30f3\u3001\u30da\u30fc\u30b8\u30d5\u30a9\u30fc\u30eb\u30c8\u3001NUMA\u306e\u5c40\u6240\u6027\u3001\u304a\u3088\u3073\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d1\u30b9\u306b\u95a2\u3057\u3066\u306f\u3001IRQ\u306e\u5206\u5e03\u3001Gro\/TSO\u306e\u8a2d\u5b9a\u3001\u304a\u3088\u3073\u30c9\u30e9\u30a4\u30d0\u306e\u6319\u52d5\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u3053\u3046\u3057\u305f\u8a73\u7d30\u304c <strong>\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc<\/strong> \u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3002.<\/p>\n\n<h2>\u30ab\u30fc\u30cd\u30eb\u306e\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u304c\u751f\u3058\u308b\u5178\u578b\u7684\u306a\u539f\u56e0<\/h2>\n\n<p>\u591a\u304f\u306e\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u306f\u3001\u591a\u304f\u306e\u5c0f\u3055\u306a\u30b3\u30b9\u30c8\u304c\u7a4d\u307f\u91cd\u306a\u3063\u3066\u5927\u304d\u306a\u3082\u306e\u306b\u306a\u308b\u305f\u3081\u306b\u767a\u751f\u3059\u308b <strong>\u8ca0\u8377<\/strong> \u5408\u8a08\u3055\u308c\u308b\u3002\u591a\u304f\u306e\u5834\u5408\u3001\u904e\u5ea6\u306a\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5207\u308a\u66ff\u3048\u3001\u30ed\u30c3\u30af\u306e\u7af6\u5408\u3001\u304a\u3088\u3073\u4e0d\u5747\u7b49\u306b\u5206\u6563\u3055\u308c\u305fIRQ\u304cCPU\u6642\u9593\u3092\u5897\u52a0\u3055\u305b\u308b\u3002\u540c\u69d8\u306b\u3001\u65ad\u7247\u5316\u3055\u308c\u305f\u30e1\u30e2\u30ea\u69cb\u9020\u3001\u975e\u52b9\u7387\u7684\u306a\u30b9\u30e9\u30d6\u306e\u4f7f\u7528\u3001\u3042\u308b\u3044\u306f\u7d76\u3048\u9593\u306a\u3044\u30da\u30fc\u30b8\u30f3\u30b0\u3082\u3001\u4e0d\u8981\u306a\u30b5\u30a4\u30af\u30eb\u3092\u6d88\u8cbb\u3059\u308b\u3002 \u7279\u5b9a\u306e\u30c9\u30e9\u30a4\u30d0\u306b\u554f\u984c\u304c\u898b\u3089\u308c\u305f\u5834\u5408\u3001\u526f\u4f5c\u7528\u3092\u9650\u5b9a\u3059\u308b\u305f\u3081\u306b\u3001\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u306e\u76f8\u95a2\u95a2\u4fc2\u3092\u8abf\u3079\u307e\u3059\u3002\u307e\u305f\u3001\u30de\u30eb\u30c1\u30b3\u30a2\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30ab\u30fc\u30cd\u30eb\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u3088\u308b\u3068\u3001\u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u30e9\u30a4\u30f3\u306f\u3059\u3050\u306b\u9ad8\u30b3\u30b9\u30c8\u306a <strong>\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/strong> \u5fc3\u914d\u306b\u306a\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3002.<\/p>\n\n<h2>\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u306e\u5206\u6790\u4f8b<\/h2>\n\n<p>\u9577\u671f\u9593\u306b\u308f\u305f\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u95a2\u9023\u306e\u6a5f\u80fd\u306e\u5272\u5408\u304c\u8457\u3057\u304f\u9ad8\u3044\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u305f\u5834\u5408\u3001\u307e\u305a\u6700\u521d\u306b\u3001\u30d1\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba\uff08\u5c0f vs. \u5927\uff09\u3001TLS vs. \u5e73\u6587\u3001\u591a\u6570\u306e\u63a5\u7d9a vs. \u5c11\u6570\u306e\u9577\u671f\u30bb\u30c3\u30b7\u30e7\u30f3\u3068\u3044\u3063\u305f\u8ca0\u8377\u306e\u7a2e\u985e\u3092\u5206\u985e\u3057\u3001\u305d\u306e <strong>\u539f\u56e0<\/strong> \u7bc4\u56f2\u3092\u7d5e\u308a\u8fbc\u307f\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001`perf record` \u3068 `perf report` \u3092\u4f7f\u3063\u3066\u8a73\u7d30\u3092\u5206\u6790\u3057\u3001\u30b3\u30fc\u30eb\u30b0\u30e9\u30d5\uff08-g\uff09\u3092\u6709\u52b9\u306b\u3057\u3066\u3001\u8907\u6570\u56de\u306e\u5b9f\u884c\u7d50\u679c\u306e\u30d1\u30b9\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002 \u305d\u306e\u4ee3\u308f\u308a\u306b\u30e1\u30e2\u30ea\u7ba1\u7406\u304c\u554f\u984c\u3068\u306a\u308b\u5834\u5408\u306f\u3001\u30a2\u30ed\u30b1\u30fc\u30bf\u3001Huge Pages\u3001THP\u8a2d\u5b9a\u3001NUMA\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u9818\u57df\u3067\u306f\u3001\u4e0d\u8981\u306a\u30d1\u30b9\u304c\u5bb9\u6613\u306b\u767a\u751f\u3059\u308b\u304b\u3089\u3067\u3059\u3002 \u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u306e\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u5b9f\u884c\u53ef\u80fd\u30b9\u30ec\u30c3\u30c9\uff08Runnable\uff09\u304c\u591a\u3059\u304e\u308b\u304b\u3001CPU\u3078\u306e\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u304c\u4e0d\u9069\u5207\u3067\u3042\u308b\u3053\u3068\u306e\u5146\u5019\u3060\u3068\u89e3\u91c8\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u306f\u5e38\u306b\u3001\u4e00\u5ea6\u306b1\u3064\u3060\u3051 <strong>\u30d1\u30e9\u30e1\u30fc\u30bf<\/strong> 1\u56de\u306e\u5b9f\u884c\u3054\u3068\u306b\u3001\u52b9\u679c\u3092\u6b63\u78ba\u306b\u7279\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3059\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\/08\/linux-cpu-hotspots-perf-top-7351.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u74b0\u5883\u306b\u304a\u3051\u308b\u6700\u9ad8\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/h2>\n\n<p>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u73fe\u5834\u3067\u306f\u3001\u308f\u305a\u304b\u306a\u30ab\u30fc\u30cd\u30eb\u30b3\u30b9\u30c8\u304c <strong>\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc<\/strong> \u591a\u304f\u306e\u30b5\u30fc\u30d3\u30b9\u306e\u8ca0\u8377\u304c\u7a4d\u307f\u91cd\u306a\u308b\u3002\u4e26\u884c\u3057\u3066\u5b9f\u884c\u3055\u308c\u308b\u30b3\u30f3\u30c6\u30ca\u3001VM\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u3088\u308a\u3001\u8ca0\u8377\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u3078\u3068\u5927\u304d\u304f\u30b7\u30d5\u30c8\u3059\u308b\u3002perf top \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u304cIRQ\u51e6\u7406\u3001SoftIRQ\u51e6\u7406\u3001\u3042\u308b\u3044\u306f\u30ed\u30c3\u30af\u30d1\u30b9\u306e\u3044\u305a\u308c\u306b\u3042\u308b\u304b\u3092\u7279\u5b9a\u3067\u304d\u308b\u3002 \u305d\u306e\u5f8c\u3001\u30ab\u30fc\u30cd\u30eb\u30d0\u30fc\u30b8\u30e7\u30f3\u3001NUMA\u30ec\u30a4\u30a2\u30a6\u30c8\u3001IRQ\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3001\u30ad\u30e5\u30fc\u306e\u6df1\u3055\u3092\u691c\u8a3c\u306b\u7d44\u307f\u8fbc\u307f\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u76f8\u4e92\u306b\u4f5c\u7528\u3059\u308b\u8981\u56e0\u3060\u304b\u3089\u3067\u3059\u3002\u3055\u3089\u306b\u6df1\u304f\u6398\u308a\u4e0b\u3052\u305f\u3044\u65b9\u306f\u3001\u3053\u306e\u30ac\u30a4\u30c9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/webhosting.de\/ja\/linux-perf-%e3%83%84%e3%83%bc%e3%83%ab%e3%80%81cpu-%e3%81%ae%e3%83%9c%e3%83%88%e3%83%ab%e3%83%8d%e3%83%83%e3%82%af%e3%81%ae%e5%88%86%e6%9e%90%e3%80%81%e6%9c%80%e9%81%a9%e5%8c%96%e3%80%81%e3%82%b5\/\">CPU\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u5206\u6790\u3059\u308b<\/a> \u79c1\u304c\u5b9f\u52d9\u3067\u65e5\u5e38\u7684\u306b\u6d3b\u7528\u3057\u3066\u3044\u308b\u3001\u305d\u306e\u4ed6\u306e\u5b9f\u7528\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3067\u3059\u3002.<\/p>\n\n<h2>\u5206\u6790\u306e\u305f\u3081\u306e\u5b9f\u8df5\u30ac\u30a4\u30c9<\/h2>\n\n<p>\u6e2c\u5b9a\u7d50\u679c\u306e\u6bd4\u8f03\u53ef\u80fd\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u3001\u518d\u73fe\u53ef\u80fd\u306a\u8ca0\u8377\u30b7\u30ca\u30ea\u30aa\u304b\u3089\u59cb\u3081\u3001 <strong>\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8<\/strong> \u5b89\u5b9a\u3057\u3066\u73fe\u308c\u308b\u306e\u3092\u5f85\u3061\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001perf top \u3092\u5b9f\u884c\u3057\u3001\u6570\u56de\u306e\u66f4\u65b0\u306b\u308f\u305f\u3063\u3066\u652f\u914d\u7684\u306a\u30b7\u30f3\u30dc\u30eb\u3092\u8a18\u9332\u3057\u307e\u3059\u3002\u3053\u306e\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u3092 perf record\/report \u3092\u4f7f\u3063\u3066\u30b3\u30fc\u30eb\u30b0\u30e9\u30d5\u306e\u660e\u78ba\u306a\u56f3\u306b\u307e\u3068\u3081\u3001\u30b3\u30b9\u30c8\u306e\u304b\u304b\u308b\u7b87\u6240\u3078\u306e\u30d1\u30b9\u3092\u7279\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002 \u305d\u306e\u5f8c\u3001IRQ\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3084\u30ad\u30e5\u30fc\u306e\u6df1\u3055\u306a\u3069\u3001\u7279\u5b9a\u306e\u8981\u7d20\u30921\u3064\u3060\u3051\u5909\u66f4\u3057\u3001\u518d\u5ea6\u6e2c\u5b9a\u3092\u884c\u3044\u307e\u3059\u3002\u305d\u306e\u52b9\u679c\u304c\u660e\u78ba\u306b\u306a\u3063\u3066\u521d\u3081\u3066\u3001\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u306b\u9032\u307f\u307e\u3059\u3002 <strong>\u30b9\u30c6\u30c3\u30d7<\/strong> \u306b\u3064\u3044\u3066\u691c\u8a0e\u3057\u3001\u305d\u306e\u77e5\u898b\u3092\u5c06\u6765\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u671f\u9593\u306b\u5099\u3048\u3066\u8a18\u9332\u3057\u3066\u304a\u304f\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\/08\/TechOffice_Nacht_CPUs_3421.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u3069\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u4ed6\u306e\u30c4\u30fc\u30eb\u304c\u9069\u3057\u3066\u3044\u308b\u304b<\/h2>\n\n<p>\u6b74\u53f2\u7684\u306a\u8996\u70b9\u3084\u3001\u3088\u308a\u8a73\u7d30\u306a\u30b3\u30fc\u30eb\u30b0\u30e9\u30d5\u3001\u3042\u308b\u3044\u306f\u7279\u5b9a\u306e\u30a4\u30d9\u30f3\u30c8\u30c1\u30a7\u30fc\u30f3\u3092\u78ba\u8a8d\u3059\u308b\u969b\u306b\u306f\u3001\u79c1\u306f <strong>\u30d1\u30fc\u30d5\u30a7\u30af\u30c8<\/strong> record\/report\u3001ftrace\u3001\u3042\u308b\u3044\u306feBPF\u3067\u3059\u3002\u30c8\u30ec\u30fc\u30b9\u30dd\u30a4\u30f3\u30c8\u3092\u4f7f\u3048\u3070\u7279\u5b9a\u306e\u30d1\u30b9\u3092\u8a73\u7d30\u306b\u5206\u6790\u3067\u304d\u3001BPF\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f7f\u3048\u3070\u67d4\u8edf\u306a\u30e1\u30c8\u30ea\u30af\u30b9\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u30ab\u30fc\u30cd\u30eb\u306e\u30d1\u30b9\u3092\u3055\u3089\u306b\u6df1\u304f\u8abf\u3079\u305f\u3044\u5834\u5408\u306f\u3001 <a href=\"https:\/\/webhosting.de\/ja\/ebpf-linux-%e5%88%86%e6%9e%90%e3%83%84%e3%83%bc%e3%83%ab-%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e7%9b%a3%e8%a6%96-%e3%82%a4%e3%83%b3%e3%82%b5%e3%82%a4%e3%83%88\/\">eBPF\u89e3\u6790\u30c4\u30fc\u30eb<\/a> \u767a\u751f\u73fe\u5834\u3067\u76f4\u63a5\u5f97\u3089\u308c\u308b\u8cb4\u91cd\u306a\u30b7\u30b0\u30ca\u30eb\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u3084\u5171\u6709\u306b\u95a2\u3059\u308b\u554f\u984c\u306b\u3064\u3044\u3066\u306f\u3001\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u304c\u660e\u78ba\u306b\u7279\u5b9a\u3055\u308c\u308c\u3070\u3001perf-c2c \u3084 pahole \u304c\u5f79\u7acb\u3061\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u7121\u95a2\u4fc2\u306a\u60c5\u5831\u306b\u60d1\u308f\u3055\u308c\u308b\u3053\u3068\u306a\u304f\u3001\u30e9\u30a4\u30d6\u30d3\u30e5\u30fc\u304b\u3089\u539f\u56e0\u306e\u7279\u5b9a\u3078\u3068\u5206\u6790\u3092\u9032\u3081\u3066\u3044\u304d\u307e\u3059\u3002 <strong>\u8a73\u7d30<\/strong> \u3092\u5931\u3046\u3002.<\/p>\n\n<h2>\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u5b9f\u8df5\u7684\u306a\u6d3b\u7528<\/h2>\n\n<p>\u79c1\u306f\u305d\u308c\u3092\u8abf\u6574\u3057\u307e\u3059\u3002 <strong>\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0<\/strong>- \u3059\u3079\u3066\u3092\u4e00\u5f8b\u306b\u6e2c\u5b9a\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u554f\u984c\u306b\u5fdc\u3058\u3066\u6226\u7565\u3092\u8abf\u6574\u3057\u307e\u3059\u3002\u6563\u767a\u7684\u306a\u30b9\u30d1\u30a4\u30af\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u983b\u5ea6\u3092\u9ad8\u3081\u3001\u8868\u793a\u9593\u9694\u3092\u77ed\u7e2e\u3057\u3066\u3001\u4e00\u904e\u6027\u306e\u30d4\u30fc\u30af\u3092\u6355\u6349\u3057\u307e\u3059\u3002 \u30d7\u30ed\u30bb\u30b9\u306b\u7126\u70b9\u3092\u5f53\u3066\u308b\u5834\u5408\u306f\u3001-p\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u5bfe\u8c61\u306ePID\u3092\u6307\u5b9a\u3057\u3001CPU\u306b\u7126\u70b9\u3092\u5f53\u3066\u308b\u5834\u5408\u306f-C\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u8ca0\u8377\u306e\u9ad8\u3044\u30b3\u30a2\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002-e\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u30a4\u30d9\u30f3\u30c8\u3092\u5236\u5fa1\u3057\u3001\u5e83\u7bc4\u56f2\u306a\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u306b\u306fcpu-cycles\u3092\u3001\u30e1\u30e2\u30ea\u52d5\u4f5c\u306b\u554f\u984c\u304c\u3042\u308b\u7591\u3044\u304c\u3042\u308b\u5834\u5408\u306fcache-misses\u306a\u3069\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002 \u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u3092\u5927\u307e\u304b\u306b\u7279\u5b9a\u3057\u3001 <strong>\u539f\u56e0<\/strong> \u30b9\u30bf\u30c3\u30af\u5185\u3067\u898b\u3064\u3051\u305f\u3044\u3002.<\/p>\n\n<p>\u4ee5\u4e0b\u306e\u8868\u306f\u3001\u79c1\u304c\u65e5\u5e38\u7684\u306b\u3088\u304f\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u3063\u3066\u3044\u308b\u5b9f\u7528\u7684\u306a\u30b9\u30a4\u30c3\u30c1\u3068\u3001\u5404\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u4ee3\u8868\u7684\u306a\u7528\u9014\u3092\u793a\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u30aa\u30d7\u30b7\u30e7\u30f3<\/th>\n      <th>\u52b9\u679c<\/th>\n      <th>\u7528\u9014<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td><strong>-p<\/strong> PID<\/td>\n      <td>\u6e2c\u5b9a\u30921\u3064\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u9650\u5b9a\u3059\u308b<\/td>\n      <td>\u30a2\u30d7\u30ea\u56fa\u6709\u306e <strong>\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8<\/strong> \u7d5e\u308a\u8fbc\u3080<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>-C<\/strong> CPU\u4e00\u89a7<\/td>\n      <td>\u53b3\u9078\u3055\u308c\u305f\u4e2d\u6838\u5206\u91ce\u306b\u7126\u70b9\u3092\u5f53\u3066\u308b<\/td>\n      <td>NUMA\/IRQ\u306e\u5272\u308a\u5f53\u3066\u3092\u78ba\u8a8d\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>-e<\/strong> \u30a4\u30d9\u30f3\u30c8<\/td>\n      <td>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30a4\u30d9\u30f3\u30c8\u307e\u305f\u306f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a4\u30d9\u30f3\u30c8\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<\/td>\n      <td>\u30b5\u30a4\u30af\u30eb\u3001\u547d\u4ee4\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u30df\u30b9<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>-g<\/strong><\/td>\n      <td>Callgraph\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3092\u6709\u52b9\u306b\u3059\u308b<\/td>\n      <td>\u300e\u300f\u306e\u4e2d\u306e\u9ad8\u4fa1\u306a\u9053 <strong>\u30b9\u30bf\u30c3\u30af<\/strong> \u8a8d\u8b58\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>\u2013\u30ab\u30fc\u30cd\u30eb\/\u2013\u30e6\u30fc\u30b6\u30fc<\/strong><\/td>\n      <td>\u30ab\u30fc\u30cd\u30eb\u7a7a\u9593\u307e\u305f\u306f\u30e6\u30fc\u30b6\u30fc\u7a7a\u9593\u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b<\/td>\n      <td>CPU\u6642\u9593\u306e\u767a\u751f\u6e90\u3092\u7279\u5b9a\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>\u2013sort<\/strong><\/td>\n      <td>\u30b7\u30f3\u30dc\u30eb\u3001DSO\u3001dso:symbol \u3067\u4e26\u3079\u66ff\u3048<\/td>\n      <td>\u8aad\u307f\u3084\u3059\u3055 <strong>\u30e9\u30f3\u30ad\u30f3\u30b0<\/strong> \u5897\u52a0<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<p>\u9577\u6642\u9593\u306e\u6e2c\u5b9a\u3092\u958b\u59cb\u3059\u308b\u524d\u306b\u3001\u5e38\u306b\u8a2d\u5b9a\u3092\u7c21\u5358\u306b\u30c6\u30b9\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u3046\u3059\u308b\u3053\u3068\u3067\u3001 <strong>\u8868\u793a<\/strong> \u5b89\u5b9a\u3057\u305f\u72b6\u614b\u304c\u7dad\u6301\u3055\u308c\u3001\u526f\u4f5c\u7528\u304c\u767a\u751f\u3057\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u7279\u306b\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u5468\u6ce2\u6570\u304c\u9ad8\u3044\u5834\u5408\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306b\u4e0d\u5fc5\u8981\u306a\u8ca0\u8377\u3092\u304b\u3051\u306a\u3044\u3088\u3046\u3001\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306b\u6ce8\u610f\u3092\u6255\u3063\u3066\u3044\u307e\u3059\u3002\u30b3\u30f3\u30c6\u30ca\u30db\u30b9\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u3055\u3089\u306b\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u3084cgroup\u306e\u5236\u9650\u306b\u3088\u3063\u3066\u53ef\u8996\u6027\u304c\u5236\u9650\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 \u518d\u73fe\u6027\u306e\u3042\u308b\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u7d50\u679c\u3092\u5f97\u308b\u305f\u3081\u306b\u3001\u30ab\u30fc\u30cd\u30eb\u3084\u30c9\u30e9\u30a4\u30d0\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u542b\u3081\u3001\u3059\u3079\u3066\u306e\u8a2d\u5b9a\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8a18\u9332\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5fb9\u5e95\u3057\u305f\u8a18\u9332\u4f5c\u696d\u306e\u304a\u304b\u3052\u3067\u3001\u5f8c\u3005\u591a\u304f\u306e\u624b\u9593\u304c\u7701\u3051\u307e\u3059\u3002 <strong>\u6642\u9593<\/strong> \u5909\u5316\u3092\u5206\u985e\u3059\u308b\u969b\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\/08\/cpuhotspots_kernel1234.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u306e\u89e3\u91c8\uff1a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u30e1\u30e2\u30ea\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9<\/h2>\n\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d1\u30b9\u304c\u4e0a\u4f4d\u306b\u3042\u308b\u5834\u5408\u3001\u79c1\u306f\u307e\u305aIRQ\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3001RSS\uff08Receive-Side-Scaling\uff09\u3001\u304a\u3088\u3073GRO\/TSO\u306a\u3069\u306e\u30aa\u30d5\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u3053\u308c\u3089\u306e\u8abf\u6574\u30d1\u30e9\u30e1\u30fc\u30bf\u304c <strong>\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8<\/strong>-\u30ec\u30a4\u30c6\u30f3\u30b7\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u8abf\u6574\u3059\u308b\u3002\u30e1\u30e2\u30ea\u95a2\u9023\u306e\u7570\u5e38\u304c\u898b\u3089\u308c\u308b\u5834\u5408\u306f\u3001\u5272\u308a\u5f53\u3066\u30d1\u30bf\u30fc\u30f3\u3001Huge Pages\u3001\u30b9\u30e9\u30d6\u7d71\u8a08\u3001\u30da\u30fc\u30b8\u30d5\u30a9\u30fc\u30eb\u30c8\u7387\u3092\u78ba\u8a8d\u3059\u308b\u3002\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u306e\u8ca0\u8377\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u30b9\u30ec\u30c3\u30c9\u6570\u306e\u904e\u5270\u3001CPU\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u306e\u8a2d\u5b9a\u4e0d\u8db3\u3001\u3042\u308b\u3044\u306f\u4e0d\u9069\u5207\u306a\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u3068\u95a2\u9023\u3057\u3066\u3044\u308b\u3002 \u7279\u5b9a\u306e\u30ab\u30fc\u30cd\u30eb\u30a4\u30d9\u30f3\u30c8\u3092\u7279\u5b9a\u3059\u308b\u305f\u3081\u306b\u3001\u30c8\u30ec\u30fc\u30b9\u30dd\u30a4\u30f3\u30c8\u3092\u8ffd\u52a0\u3067\u8a2d\u5b9a\u3059\u308b\u304b\u3001\u307e\u305f\u306f <a href=\"https:\/\/webhosting.de\/ja\/bpftrace-%e3%81%ab%e3%82%88%e3%82%8b%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e3%81%ae%e5%95%8f%e9%a1%8c%e3%81%ae%e6%97%a9%e6%9c%9f%e7%99%ba%e8%a6%8b\/\">\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306b\u304a\u3051\u308bbpftrace<\/a>, \u3001\u4eee\u8aac\u3092\u691c\u8a3c\u3059\u308b\u305f\u3081\u306b\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001perf top\u3067\u306e\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u89b3\u6e2c\u30c7\u30fc\u30bf\u3092\u3088\u308a\u6df1\u3044\u6e2c\u5b9a\u5730\u70b9\u306e\u30c7\u30fc\u30bf\u3068\u7d50\u3073\u3064\u3051\u3001\u3088\u308a\u8fc5\u901f\u306b\u672c\u6765\u306e <strong>\u539f\u56e0<\/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\/08\/linux-kernel-hotspots-7894.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30a2\u30a4\u30b3\u30f3\u306e\u8868\u793a\u6761\u4ef6\u3068\u53ef\u8996\u6027<\/h2>\n\n<p>\u3060\u304b\u3089 <strong>perf top<\/strong> \u95a2\u9023\u3059\u308b\u3059\u3079\u3066\u306e\u30ab\u30fc\u30cd\u30eb\u30b7\u30f3\u30dc\u30eb\u3092\u5c55\u958b\u3059\u308b\u969b\u3001\u79c1\u306f2\u3064\u306e\u70b9\u306b\u6ce8\u610f\u3092\u6255\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u306f\u3001\u9069\u5207\u306a\u6a29\u9650\u3068\u5229\u7528\u53ef\u80fd\u306a\u30b7\u30f3\u30dc\u30eb\u60c5\u5831\u3067\u3059\u3002\u672c\u756a\u74b0\u5883\u3067\u306f\u3001 <em>kernel.perf_event_paranoid<\/em> \u591a\u304f\u306e\u5834\u5408\u3001\u3053\u306e\u5024\u306f\u9ad8\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30ab\u30fc\u30cd\u30eb\u306e\u8a73\u7d30\u306a\u60c5\u5831\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u3053\u306e\u5024\u3092\u4e00\u6642\u7684\u306b\u4e0b\u3052\u308b\u304b\u3001\u5fc5\u8981\u306a\u6a29\u9650\uff08CAP_PERFMON\/CAP_SYS_ADMIN\uff09\u3092\u6301\u3064root\u30e6\u30fc\u30b6\u30fc\u3068\u3057\u3066\u4f5c\u696d\u3057\u307e\u3059\u3002\u30ab\u30fc\u30cd\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u96a0\u3055\u308c\u3066\u3044\u308b\u5834\u5408\uff08<em>kptr_restrict<\/em>)\u3001\u305d\u308c\u3067\u3082\u305f\u3044\u3066\u3044\u306f\u95a2\u6570\u540d\u306f\u8868\u793a\u3055\u308c\u307e\u3059\u304c\u3001\u751f\u30a2\u30c9\u30ec\u30b9\u306f\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u2015\u2015\u79c1\u306b\u3068\u3063\u3066\u306f\u3001\u512a\u5148\u9806\u4f4d\u3092\u3064\u3051\u308b\u306b\u306f\u305d\u308c\u3067\u5341\u5206\u3067\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u30b9\u30da\u30fc\u30b9\u306b\u3064\u3044\u3066\u306f\u3001perf top\u304c\u30aa\u30d5\u30bb\u30c3\u30c8\u3067\u306f\u306a\u304f\u95a2\u6570\u540d\u3092\u8868\u793a\u3059\u308b\u3088\u3046\u306b\u3001\u95a2\u9023\u3059\u308b\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5f53\u3066\u63a8\u91cf\u3092\u6e1b\u3089\u3057\u3001\u539f\u56e0\u306e\u7279\u5b9a\u3092\u65e9\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n<h2>\u30d1\u30fc\u30bb\u30f3\u30c6\u30fc\u30b8\u3068\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u306e\u843d\u3068\u3057\u7a74<\/h2>\n\n<p>\u30ea\u30b9\u30c8\u306b\u3042\u308b\u30d1\u30fc\u30bb\u30f3\u30c6\u30fc\u30b8\u306b\u3064\u3044\u3066\u306f\u3001\u79c1\u306f\u6b21\u306e\u3088\u3046\u306b\u89e3\u91c8\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u76f8\u5bfe\u7684\u306a\u5272\u5408<\/strong> \u6e2c\u5b9a\u3055\u308c\u305f\u30b5\u30f3\u30d7\u30eb\u306e\u5024\u3067\u3042\u308a\u3001\u6642\u9593\u8ef8\u4e0a\u306e\u6b63\u78ba\u306aCPU\u4f7f\u7528\u7387\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8907\u6570\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u9078\u629e\u3059\u308b\u3068\u3001 <strong>\u591a\u91cd\u5316<\/strong> \u9069\u7528\uff1aPerf\u306f\u30ab\u30a6\u30f3\u30bf\u30fc\u3092\u6642\u9593\u8ef8\u306b\u6cbf\u3063\u3066\u5206\u6563\u3055\u305b\u3001 <em>\u30ce\u30fc\u30de\u30e9\u30a4\u30ba<\/em> \u8868\u793a\u306b\u3064\u3044\u3066\u3002\u660e\u78ba\u306a\u50be\u5411\u3092\u628a\u63e1\u3059\u308b\u305f\u3081\u3001\u307e\u305a\u306fCPU\u30b5\u30a4\u30af\u30eb\u3084\u547d\u4ee4\u6570\u3067\u5e83\u7bc4\u56f2\u306b\u6e2c\u5b9a\u3057\u3001\u7279\u6b8a\u306a\u30a4\u30d9\u30f3\u30c8\u306f\u5f8c\u3067\u8ffd\u52a0\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u77ed\u6642\u9593\u306e\u30b9\u30d1\u30a4\u30af\u306f\u3001\u3088\u308a\u9ad8\u3044\u5468\u6ce2\u6570\uff08-F\uff09\u3068\u77ed\u3044\u9593\u9694\u3067\u6355\u6349\u3057\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u304c\u5b89\u5b9a\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u6a19\u6e96\u306e\u5468\u6ce2\u6570\u3067\u5341\u5206\u3067\u3059\u3002\u307e\u305f\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u3082\u6ce8\u610f\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u30a2\u30a4\u30c9\u30eb<\/strong>-\u4f4d\u76f8\u3084\u5468\u6ce2\u6570\u306e\u5909\u5316\uff08\u30bf\u30fc\u30dc\u3001\u30ac\u30d0\u30ca\u30fc\uff09\u306b\u3088\u3063\u3066\u77e5\u899a\u304c\u6b6a\u3080\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u305d\u306e\u305f\u3081\u3001\u6bd4\u8f03\u6e2c\u5b9a\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u30af\u30ed\u30c3\u30af\u8a2d\u5b9a\u3068\u30a8\u30cd\u30eb\u30ae\u30fc\u8a2d\u5b9a\u3092\u7d71\u4e00\u3057\u3066\u3044\u308b\u3002.<\/p>\n\n<h2>\u30b3\u30fc\u30eb\u30b0\u30e9\u30d5\u306e\u6df1\u5c64\u5206\u6790<\/h2>\n\n<p>\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u3092\u7279\u5b9a\u3057\u305f\u3089\u3001\u30b3\u30fc\u30eb\u30b0\u30e9\u30d5\u3092\u6d3b\u7528\u3057\u3066\u305d\u306e\u6709\u52b9\u6027\u3092\u9ad8\u3081\u307e\u3059\u3002 <strong>-g<\/strong> \u305d\u3057\u3066\u3001\u9069\u5207\u306a\u30a2\u30f3\u30ef\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u624b\u6cd5\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u30b3\u30b9\u30c8\u306e\u304b\u304b\u308b\u7b87\u6240\u306e\u30d1\u30b9\u304c\u7279\u5b9a\u3067\u304d\u307e\u3059\u3002\u30d5\u30ec\u30fc\u30e0\u30dd\u30a4\u30f3\u30bf\u3084DWARF\u30a2\u30f3\u30ef\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u3088\u308a\u5b89\u5b9a\u3057\u305f\u30b9\u30bf\u30c3\u30af\u304c\u5f97\u3089\u308c\u307e\u3059\u3002\u5229\u7528\u53ef\u80fd\u306a\u5834\u5408\u306f\u3001\u975e\u5e38\u306b\u6b63\u78ba\u306a\u30c8\u30ec\u30fc\u30b9\u30c1\u30a7\u30fc\u30f3\u3092\u5f97\u308b\u305f\u3081\u306b\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u652f\u63f4\u578b\u306e\u30ea\u30bf\u30fc\u30f3\u30d0\u30c3\u30d5\u30a1\uff08LBR\uff09\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 \u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u305f\u3081\u3001mmap\u30d0\u30c3\u30d5\u30a1\u306f\u5fc5\u8981\u306a\u5206\u3060\u3051\u5897\u3084\u3057\u307e\u3059\u3002\u30b9\u30bf\u30c3\u30af\u306b\u591a\u304f\u306e\u30d8\u30eb\u30d1\u30fc\u95a2\u6570\u304c\u8868\u793a\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u3092\u6255\u3044\u307e\u3059\u3002 <strong>\u3092\u542b\u3080<\/strong> \u5bfe <strong>\u9650\u5b9a<\/strong> \u30b3\u30b9\u30c8\uff1a\u91cd\u8981\u306a\u306e\u306f\u3001\u305d\u306e\u6a5f\u80fd\u81ea\u4f53\u304c\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308b\u3082\u306e\u306a\u306e\u304b\u3001\u305d\u308c\u3068\u3082\u5358\u306a\u308b\u901a\u904e\u70b9\u3068\u3057\u3066\u30b3\u30b9\u30c8\u3092\u5360\u3081\u3066\u3044\u308b\u3060\u3051\u306a\u306e\u304b\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u3053\u306e\u533a\u5225\u3092\u3064\u3051\u308b\u3053\u3068\u3067\u3001\u539f\u56e0\u7a76\u660e\u306b\u304b\u304b\u308b\u6642\u9593\u3092\u3057\u3070\u3057\u3070\u6570\u6642\u9593\u5206\u7bc0\u7d04\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n<h2>\u30b3\u30f3\u30c6\u30ca\u304a\u3088\u3073VM\u3067\u306e\u4f5c\u696d<\/h2>\n\n<p>\u30b3\u30f3\u30c6\u30ca\u74b0\u5883\u3067\u306f\u3001\u79c1\u306e\u30d3\u30e5\u30fc\u304c <strong>cgroups<\/strong> \u304a\u3088\u3073\u30cd\u30fc\u30e0\u30b9\u30da\u30fc\u30b9\u304c\u6b63\u3057\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u6e2c\u5b9a\u306f\u95a2\u9023\u3059\u308bPID\u3068CPU\u306b\u7d5e\u308b\u3053\u3068\u3067\u3001\u30ce\u30a4\u30ba\u306e\u591a\u3044\u8fd1\u96a3\u30d7\u30ed\u30bb\u30b9\u304c\u7d50\u679c\u3092\u6b6a\u3081\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002 VM\u306b\u3064\u3044\u3066\u306f\u3001\u4eee\u60f3PMU\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u3068\u3001\u6b63\u78ba\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30a4\u30d9\u30f3\u30c8\u304c\u53d6\u5f97\u3067\u304d\u305a\u3001\u4e3b\u306b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u30b7\u30b0\u30ca\u30eb\u3057\u304b\u78ba\u8a8d\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002KVM\u30db\u30b9\u30c8\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u5468\u56f2\u306e\u30b7\u30f3\u30dc\u30eb\u304b\u3089\u8b58\u5225\u3067\u304d\u307e\u3059\u3002 <em>kvm_vcpu<\/em> \u6216\u3044\u306f <em>vmx<\/em>\/<em>svm<\/em>. \u3053\u306e\u3088\u3046\u306a\u72b6\u6cc1\u3067\u306f\u3001\u539f\u56e0\u3068\u7d50\u679c\u3092\u6df7\u540c\u3057\u306a\u3044\u3088\u3046\u3001\u30db\u30b9\u30c8\u3068\u30b2\u30b9\u30c8\u306e\u5206\u6790\u3092\u660e\u78ba\u306b\u533a\u5225\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>\u8a8d\u8b58\u53ef\u80fd\u306a\u30d1\u30bf\u30fc\u30f3\u3068\u8fc5\u901f\u306a\u4eee\u8aac<\/h2>\n\n<p>\u65e5\u5e38\u751f\u6d3b\u3067\u306f\u3001\u7279\u5b9a\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u6709\u52b9\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u79c1\u306f\u3059\u3050\u306b\u305d\u308c\u3092\u78ba\u8a8d\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n<ul>\n  <li><strong>\u30ed\u30c3\u30af\u30fb\u30b3\u30f3\u30da\u30c6\u30a3\u30b7\u30e7\u30f3<\/strong>: \u30c0\u30a4\u30d3\u30f3\u30b0 <em>queued_spin_lock_slowpath<\/em> \u6216\u3044\u306f <em>mutex_spin_on_owner<\/em> \u4e0a\u306e\u65b9\u3067\u306f\u3001\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u5206\u5272\u304c\u7c97\u3059\u304e\u305f\u308a\u3001\u30ef\u30fc\u30af\u30ad\u30e5\u30fc\u306e\u5e45\u304c\u72ed\u3059\u304e\u305f\u308a\u3057\u3066\u3044\u307e\u3059\u3002\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u3001\u30ed\u30c3\u30af\u7c92\u5ea6\u306e\u5fae\u8abf\u6574\u3001\u307e\u305f\u306f\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u306e\u5909\u66f4\u306b\u3088\u3063\u3066\u3001\u7af6\u5408\u3092\u8efd\u6e1b\u3057\u307e\u3059\u3002.<\/li>\n  <li><strong>\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u5370\u5237<\/strong>: \u5897\u3048\u7d9a\u3051\u3066\u3044\u308b <em>schedule()<\/em>, <em>pick_next_task_fair<\/em> \u3042\u308b\u3044\u306f\u30a6\u30a7\u30a4\u30af\u30a2\u30c3\u30d7\u30d1\u30b9\u306b\u3064\u3044\u3066\u306f\u3001\u30b9\u30ec\u30c3\u30c9\u6570\u3001\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u3001\u512a\u5148\u5ea6\u3092\u8abf\u6574\u3057\u307e\u3059\u3002\u591a\u304f\u306e\u5834\u5408\u3001\u300c\u304a\u3057\u3083\u3079\u308a\u306a\u300d\u30b9\u30ec\u30c3\u30c9\u3092\u843d\u3061\u7740\u304b\u305b\u305f\u308a\u3001CPU\u8a2d\u5b9a\u3092\u660e\u78ba\u306b\u5b9a\u7fa9\u3057\u305f\u308a\u3059\u308b\u3060\u3051\u3067\u5341\u5206\u3067\u3059\u3002.<\/li>\n  <li><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30fb\u30bd\u30d5\u30c8IRQ<\/strong>: \u30d4\u30fc\u30af\u306f <em>net_rx_action<\/em>, <em>napi_poll<\/em> \u3042\u308b\u3044\u306f\u3001\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u306e\u30aa\u30d5\u30ed\u30fc\u30c9\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30d1\u30b1\u30c3\u30c8\u30b9\u30c8\u30fc\u30e0\u3084\u3001RSS\u304a\u3088\u3073IRQ\u306e\u5272\u308a\u5f53\u3066\u304c\u6700\u9069\u3067\u306a\u3044\u3053\u3068\u3092\u793a\u5506\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u306fIRQ\u3092\u9069\u5207\u306a\u30b3\u30a2\u306b\u5272\u308a\u5f53\u3066\u3001\u5e0c\u671b\u3059\u308b\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\uff0f\u30ec\u30a4\u30c6\u30f3\u30b7\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306b\u5408\u308f\u305b\u3066GRO\/TSO\u3092\u8abf\u6574\u3057\u307e\u3059\u3002.<\/li>\n  <li><strong>\u4fdd\u5b58\u30d1\u30b9<\/strong>: \u591a\u304f\u306e\u6642\u9593\u3092 <em>do_page_fault<\/em>, <em>copy_user_*<\/em> \u3042\u308b\u3044\u306f\u30b9\u30e9\u30d6\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5272\u308a\u5f53\u3066\u30d1\u30bf\u30fc\u30f3\u3001THP\/Huge Pages\u3001NUMA\u306e\u5c40\u6240\u6027\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u306e\u4e0d\u9069\u5207\u306a\u914d\u7f6e\u306f\u3001\u6c17\u3065\u304b\u306a\u3044\u3046\u3061\u306b\u975e\u5e38\u306b\u591a\u304f\u306e\u30b5\u30a4\u30af\u30eb\u3092\u6d6a\u8cbb\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002.<\/li>\n  <li><strong>RCU\u3068\u30bf\u30a4\u30de\u30fc<\/strong>: \u652f\u914d\u3059\u308b <em>rcu_core<\/em> \u3042\u308b\u3044\u306f\u30bf\u30a4\u30de\u30fc\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306a\u3069\u306b\u3064\u3044\u3066\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u52d5\u4f5c\u3092\u3088\u308a\u5b89\u5b9a\u3055\u305b\u308b\u305f\u3081\u306b\u3001\u5404\u30b5\u30fc\u30d3\u30b9\u306e\u30dd\u30fc\u30ea\u30f3\u30b0\u3084\u30d0\u30c3\u30c1\u51e6\u7406\u306e\u6226\u7565\u3092\u898b\u76f4\u3057\u3066\u3044\u307e\u3059\u3002.<\/li>\n<\/ul>\n\n<h2>\u6e2c\u5b9a\u306e\u53b3\u5bc6\u3055\u3068\u518d\u73fe\u6027\u3092\u3055\u3089\u306b\u6df1\u3081\u308b<\/h2>\n\n<p>\u6b63\u78ba\u306b\u6bd4\u8f03\u53ef\u80fd\u306a\u5b9f\u884c\u7d50\u679c\u3092\u5f97\u308b\u305f\u3081\u3001\u74b0\u5883\u8981\u56e0\u3092\u4e00\u5b9a\u306b\u4fdd\u3063\u3066\u3044\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001CPU\u30ac\u30d0\u30ca\u30fc\u3001\u30bf\u30fc\u30dc\u30b9\u30c6\u30fc\u30c8\u3001\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u30b8\u30e7\u30d6\u3001\u3055\u3089\u306b\u306f\u9ad8\u5bc6\u5ea6\u30ce\u30fc\u30c9\u306b\u304a\u3051\u308b\u5ba4\u6e29\u307e\u3067\u3067\u3059\u3002\u30c6\u30b9\u30c8\u8ca0\u8377\u3092\u5b9a\u7fa9\u6e08\u307f\u306e\u30b3\u30a2\u306b\u5272\u308a\u5f53\u3066\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u8ca0\u8377\u306e\u9ad8\u3044CPU\u3092\u9694\u96e2\u3059\u308b\u3053\u3068\u3067\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u306e\u5224\u65ad\u304c\u5b89\u5b9a\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002 \u5909\u66f4\u5185\u5bb9\u306b\u3064\u3044\u3066\u306f\u3001\u30ab\u30fc\u30cd\u30eb\u3001\u30c9\u30e9\u30a4\u30d0\u3001\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u542b\u3081\u3066\u8a18\u9332\u3057\u307e\u3059\u3002\u30ea\u30b9\u30af\u306e\u9ad8\u3044\u8abf\u6574\u3092\u884c\u3046\u5834\u5408\u306f\u3001\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u30dd\u30a4\u30f3\u30c8\u3092\u8a2d\u5b9a\u3057\u3001\u5909\u66f4\u76f4\u5f8c\u306b\u518d\u5ea6\u6e2c\u5b9a\u3092\u884c\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044 <strong>\u30d3\u30d5\u30a9\u30fc\uff0f\u30a2\u30d5\u30bf\u30fc<\/strong>-\u6570\u30f6\u6708\u7d4c\u3063\u305f\u4eca\u3067\u3082\u3001\u305d\u306e\u7d4c\u7def\u3092\u305f\u3069\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u8a71\u3060\u3002.<\/p>\n\n<h2>\u5b9f\u7528\u7684\u306a\u30b3\u30de\u30f3\u30c9\uff1a\u79c1\u304c\u3088\u304f\u4f7f\u3046\u30b3\u30de\u30f3\u30c9<\/h2>\n\n<p>\u8cea\u554f\u306e\u5185\u5bb9\u306b\u5fdc\u3058\u3066\u3001\u7c21\u6f54\u306a\u30ec\u30b7\u30d4\u3092\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n<ul>\n  <li><strong>\u8ca0\u8377\u4e0b\u3067\u306e\u5e83\u7bc4\u56f2\u306a\u30b9\u30b3\u30fc\u30d7\u8abf\u67fb<\/strong>: perf top -e cpu-cycles \u2013kernel \u2013user<br\/>\u30ab\u30fc\u30cd\u30eb\u3068\u30e6\u30fc\u30b6\u30fc\u30b9\u30da\u30fc\u30b9\u306e\u3069\u3061\u3089\u304c\u4e3b\u5c0e\u6a29\u3092\u63e1\u3063\u3066\u3044\u308b\u304b\u3092\u7d20\u65e9\u304f\u628a\u63e1\u3059\u308b\u3002.<\/li>\n  <li><strong>Callgraph \u3092\u7528\u3044\u305f\u30d7\u30ed\u30bb\u30b9\u5206\u6790<\/strong>: perf top -p PID -g \u2013kernel \u2013user<br\/>\u30b7\u30b9\u30c6\u30e0\u30ce\u30a4\u30ba\u3092\u4f34\u308f\u305a\u306b\u3001\u8a72\u5f53\u3059\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30e9\u30a4\u30d6\u30d1\u30b9\u3092\u8868\u793a\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n  <li><strong>CPU\u7279\u96c6<\/strong>: perf top -C 2-5 -e cpu-cycles -g<br\/>NUMA\u3084IRQ\u306e\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u306b\u304a\u3044\u3066\u3001\u3054\u304f\u4e00\u90e8\u306e\u30b3\u30a2\u3060\u3051\u304c\u300c\u904e\u71b1\u300d\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002.<\/li>\n  <li><strong>\u7a83\u76d7\u306e\u5bb9\u7591<\/strong>: perf top -e cache-misses -e cycles -g \u2013kernel<br\/>\u30b5\u30a4\u30af\u30eb\u306b\u5bfe\u3059\u308b\u30e1\u30e2\u30ea\u30d1\u30b9\u306e\u5272\u5408\u3092\u4e00\u77ac\u8868\u793a\u3057\u307e\u3059\u3002.<\/li>\n  <li><strong>\u4e00\u6642\u7684\u306a\u30b9\u30d1\u30a4\u30af\u3092\u56fa\u5b9a\u3059\u308b<\/strong>: perf top -F 999 -I 1000 -e cycles<br\/>\u5468\u6ce2\u6570\u3092\u9ad8\u304f\u3057\u3001\u8868\u793a\u9593\u9694\u3092\u77ed\u304f\u3059\u308b\u3053\u3068\u3067\u3001\u77ed\u3044\u30d4\u30fc\u30af\u3092\u6349\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/li>\n<\/ul>\n\n<h2>\u5177\u4f53\u7684\u306a\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u306b\u95a2\u3059\u308b\u89e3\u91c8\u306e\u6307\u91dd<\/h2>\n\n<p>\u6642\u70b9\u3067\u306f <strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/strong> NAPI\u3084RX\/TX\u30d1\u30b9\u306b\u52a0\u3048\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u767a\u751f\u91cf\u304c\u591a\u3044\u5834\u5408\u306b\u306f\u652f\u914d\u7684\u306b\u306a\u308a\u5f97\u308bTLS\/\u6697\u53f7\u5316\u306e\u5272\u5408\u3082\u76e3\u8996\u3057\u3066\u3044\u307e\u3059\u3002 \u30bc\u30ed\u30b3\u30d4\u30fc\u3084\u30b3\u30a2\u30ea\u30bb\u30b7\u30f3\u30b0\u304c\u9069\u5207\u306b\u6a5f\u80fd\u3057\u3066\u3044\u308b\u304b\u3001\u307e\u305f\u5927\u304d\u306a\u30bb\u30b0\u30e1\u30f3\u30c8\uff08TSO\/GSO\uff09\u304c\u30ec\u30a4\u30c6\u30f3\u30b7\u306e\u8a31\u5bb9\u7bc4\u56f2\u3092\u8d85\u3048\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 <strong>\u30e1\u30e2\u30ea<\/strong>-\u3053\u306e\u70b9\u306b\u3064\u3044\u3066\u306fTHP\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\uff1a\u3053\u308c\u306f\u79c1\u306e\u8ca0\u8377\u8efd\u6e1b\u306b\u5f79\u7acb\u3064\u306e\u304b\u3001\u305d\u308c\u3068\u3082\u30b9\u30d7\u30ea\u30c3\u30c8\uff0f\u30de\u30fc\u30b8\u30a4\u30d9\u30f3\u30c8\u304c\u90aa\u9b54\u306b\u306a\u308b\u306e\u304b\uff1f <strong>\u30b9\u30c8\u30ec\u30fc\u30b8<\/strong> \u79c1\u306f\u89e3\u91c8\u3059\u308b <em>blk_mq<\/em>-\u30b7\u30f3\u30dc\u30eb\u3068io_uring\u30d1\u30b9\u306f\u3001\u30ad\u30e5\u30fc\u306e\u6df1\u3055\u3084\u30de\u30fc\u30b8\u6226\u7565\u3092\u793a\u3059\u6307\u6a19\u3068\u3057\u3066\u7528\u3044\u3089\u308c\u308b\u3002 <strong>\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9<\/strong> Wakeup\u30a2\u30d0\u30e9\u30f3\u30c1\u3092Lock\u30c1\u30a7\u30fc\u30f3\u3084IO\u30c1\u30a7\u30fc\u30f3\u3068\u7d44\u307f\u5408\u308f\u305b\u3001\u30b9\u30ec\u30c3\u30c9\u6570\u3092\u5897\u3084\u3059\u306e\u3067\u306f\u306a\u304f\u3001\u30d0\u30c3\u30af\u30d7\u30ec\u30c3\u30b7\u30e3\u30fc\u3092\u7528\u3044\u3066\u30d1\u30b9\u306e\u8ca0\u8377\u3092\u5206\u6563\u3055\u305b\u307e\u3059\u3002.<\/p>\n\n<h2>\u300c\u30d1\u30fc\u30d5\u30a7\u30af\u30c8\u30c8\u30c3\u30d7\u300d\u306e\u9650\u754c\u3068\u3001\u79c1\u304c\u65b9\u91dd\u8ee2\u63db\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0<\/h2>\n\n<p>\u306a\u305c\u306a\u3089 <strong>perf top<\/strong> \u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30d9\u30fc\u30b9\u3067\u3042\u308b\u305f\u3081\u3001\u500b\u3005\u306e\u30a4\u30d9\u30f3\u30c8\u3088\u308a\u3082\u5e73\u5747\u7684\u306a\u50be\u5411\u306e\u65b9\u304c\u628a\u63e1\u3057\u3084\u3059\u3044\u3002 \u6c7a\u5b9a\u8ad6\u7684\u306a\u51e6\u7406\u30c1\u30a7\u30fc\u30f3\u306b\u3064\u3044\u3066\u306f\u3001\u6b63\u78ba\u306a\u56e0\u679c\u95a2\u4fc2\u3092\u7acb\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001\u30c8\u30ec\u30fc\u30b9\u30dd\u30a4\u30f3\u30c8\u3001ftrace\u3001\u307e\u305f\u306feBPF\u306b\u5207\u308a\u66ff\u3048\u307e\u3059\u3002\u6b63\u78ba\u306a\u5b9a\u91cf\u5316\uff08\u4f8b\uff1a\u30ea\u30af\u30a8\u30b9\u30c8\u3042\u305f\u308a\u306e\u547d\u4ee4\u6570\uff09\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3057\u307e\u3059\u3002 <strong>\u30d1\u30fc\u30b9\u30bf\u30c3\u30c8<\/strong> \u3042\u308b\u3044\u306f\u3001perf record\/report 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