{"id":4341,"date":"2020-10-30T20:49:36","date_gmt":"2020-10-30T19:49:36","guid":{"rendered":"https:\/\/webhosting.de\/?p=4341"},"modified":"2020-10-30T20:49:36","modified_gmt":"2020-10-30T19:49:36","slug":"create-ramdisk-under-linux","status":"publish","type":"post","link":"https:\/\/webhosting.de\/sv\/erstellen-einer-ramdisk-unter-linux\/","title":{"rendered":"Skapa en ramdiskett i Linux"},"content":{"rendered":"<p>En <a href=\"https:\/\/webhosting.de\/sv\/ramdisk-zur-beschleunigung-erstellen\/\">ramdisk<\/a> \u00e4r en liten virtuell enhet som \u00e4r en del av arbetsminnet. Denna <a href=\"https:\/\/webhosting.de\/sv\/wie-wichtig-ist-der-arbeitsspeicher-beim-webhosting\/\">Arbetsminne<\/a> kallas RAM-minne. Lagringsutrymme upptas dynamiskt och statiskt. Detta filsystem monteras och formateras i f\u00f6rv\u00e4g. Minnesutrymmet \u00e4r f\u00f6rgrenat och kan inte n\u00e5s av systemet.<\/p>\n<h2>Det flyktiga minnet- Ramdisken<\/h2>\n<p>F\u00f6r Linux \u00e4r ramdisketten viktig f\u00f6r att m\u00f6jligg\u00f6ra en snabb l\u00e4s- och skrivprocess. D\u00e4rf\u00f6r p\u00e5verkas den mindre av slitage \u00e4n en vanlig h\u00e5rddisk eller till och med ett flashminne. En upptagen CPU eller en l\u00e5ngsam n\u00e4tverksanslutning kan naturligtvis stoppa disken. Problem med radering i filsystem som ext3 eller ext4 kan till och med kringg\u00e5s. De os\u00e4kra filerna kopieras inte till h\u00e5rddisken, utan lagras i filsystemet, dvs. ramdisken. Observera att filerna inte hamnar p\u00e5 h\u00e5rddisken. Vissa filer lagrar o\u00f6nskade mellanrum. F\u00f6r att skapa en RAM-disk kan olika s\u00e4tt anv\u00e4ndas.<\/p>\n<h3><a href=\"https:\/\/webhosting.de\/wp-content\/uploads\/2017\/01\/ufo.png\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-2023 alignright\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2017\/01\/ufo.png\" alt=\"hastighet ufo\" width=\"255\" height=\"255\" \/><\/a><\/h3>\n<h3>De olika m\u00f6jligheterna<\/h3>\n<p>Det f\u00f6rsta s\u00e4ttet \u00e4r att skapa en ramdiskett med ett tmps-filsystem. Detta \u00e4r inte ett komplett RAM-system, utan kan ocks\u00e5 lagras p\u00e5 h\u00e5rddisken. <a href=\"https:\/\/webhosting.de\/sv\/personenbezogene-daten-sozialen-netzwerken\/\">Uppgifter<\/a> spara. P\u00e5 s\u00e5 s\u00e4tt kan minnet p\u00e5 ramdisken inte bli f\u00f6r litet. Om enheten \u00e4r tom kan den inte f\u00f6rbruka n\u00e5got minne p\u00e5 disken. Dessa partitioner kan monteras n\u00e4r systemet startas.<br \/>\nDet andra s\u00e4ttet \u00e4r att formatera h\u00e5rddisken. P\u00e5 s\u00e5 s\u00e4tt kan ett omr\u00e5de v\u00e4ljas som RAM-disk. Ett alternativ -m0 b\u00f6r s\u00e4kerst\u00e4lla att inget utrymme reserveras f\u00f6r root-anv\u00e4ndaren. Detta skulle ta plats. I praktiken b\u00f6r systemresurser tas bort. Minnet \u00e4r allts\u00e5 mindre med partitioner. M\u00e5let \u00e4r en ramdiskett som varken kan l\u00e4sas eller skrivas, men som har korrigeringar. Detta m\u00e5ste f\u00f6rmodligen beviljas. Storleken p\u00e5 ramdisken kan kallas och \u00e4ndras med speciella kommandon. Vid varje omstart f\u00f6rsvinner disken igen, s\u00e5 det b\u00f6r skapas ett skript som lagrar kommandona. P\u00e5 s\u00e5 s\u00e4tt beh\u00f6ver kommandona inte skrivas in igen.<br \/>\nDet tredje s\u00e4ttet \u00e4r att arbeta med ramfs-filsystemet. Detta skiljer sig fr\u00e5n tmpfs-filsystemet genom att data byts ut. Detta g\u00f6r det ocks\u00e5 l\u00e4tt att skapa. Disken \u00e4ndras dynamiskt i storlek och partitionen monteras alltid vid uppstart. Detta kan f\u00f6rhindras med redigeraren och root-r\u00e4ttigheterna.<\/p>\n<h3>Storleken p\u00e5 RAM-diskarna<\/h3>\n<p>Varje skapad ramdisk kan ha olika storlek. Detta \u00e4r olika f\u00f6r alla. Systemet b\u00f6r vara tillg\u00e4ngligt med tillr\u00e4ckligt med RAM-minne och swapminne, eller SWAP, b\u00f6r ocks\u00e5 vara tillg\u00e4ngligt. Detta skulle dock s\u00e4nka hastigheten p\u00e5 RAM-disken. Ofta r\u00e4cker det med 1 GB RAM-minne.<\/p>\n<p>En handledning f\u00f6r Linux finns i artikeln\u00a0<a href=\"https:\/\/webhosting.de\/sv\/ramdisk-to-accelerate-create\/\">Skapa en ramdiskett f\u00f6r att p\u00e5skynda Amavis p\u00e5 Linux<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Eine ramdisk ist ein winziges, virtuelles Laufwerk, das ein Teil des Arbeitsspeichers darstellt. Diesen Arbeitsspeicher nennt man RAM. Speicherplatz wird dynamisch und statisch belegt. Dieses Dateisystem wird eingeh\u00e4ngt und vorher formatiert. Der Speicherplatz wird abgezweigt und ist f\u00fcr das System nicht erreichbar. Der fl\u00fcchtige Speicher- Die ramdisk F\u00fcr Linux ist die ramdisk wichtig um einen 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