{"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":"tworzac-ramdisk-pod-linuxem","status":"publish","type":"post","link":"https:\/\/webhosting.de\/pl\/erstellen-einer-ramdisk-unter-linux\/","title":{"rendered":"Tworzenie Ramdysku pod Linuksem"},"content":{"rendered":"

A ramdisk<\/a> to malutki wirtualny dysk, kt\u00f3ry jest cz\u0119\u015bci\u0105 g\u0142\u00f3wnej pami\u0119ci. To Pami\u0119\u0107 robocza<\/a> nazywa si\u0119 RAM. Pami\u0119\u0107 jest u\u017cywana dynamicznie i statycznie. Ten system plik\u00f3w jest montowany i formatowany wcze\u015bniej. Przestrze\u0144 pami\u0119ci jest odga\u0142\u0119ziona i nie jest dost\u0119pna dla systemu.<\/p>\n

Pami\u0119\u0107 lotna - Ramdisk<\/h2>\n

Dla Linuksa ramdisk jest wa\u017cny, aby umo\u017cliwi\u0107 szybki proces odczytu i zapisu. Jest wi\u0119c mniej podatny na zu\u017cycie, jak normalny dysk twardy czy nawet pami\u0119\u0107 flash. Zaj\u0119ty procesor lub wolne po\u0142\u0105czenie sieciowe mo\u017ce oczywi\u015bcie zatrzyma\u0107 dysk. Mo\u017cna nawet unikn\u0105\u0107 problem\u00f3w z usuwaniem plik\u00f3w w systemach plik\u00f3w takich jak ext3 lub ext4. Niepewne pliki nie s\u0105 kopiowane na dysk twardy, lecz przechowywane w systemie plik\u00f3w, czyli na ramdysku. Nale\u017cy zauwa\u017cy\u0107, \u017ce pliki nie trafiaj\u0105 na dysk twardy. Niekt\u00f3re pliki przechowuj\u0105 niezam\u00f3wione pliki pomi\u0119dzy. Aby utworzy\u0107 ramdisk, mo\u017cna u\u017cy\u0107 r\u00f3\u017cnych sposob\u00f3w.<\/p>\n

\"szybko\u015b\u0107<\/a><\/h3>\n

R\u00f3\u017cne mo\u017cliwo\u015bci<\/h3>\n

Pierwszym sposobem by\u0142oby stworzenie ramdysku z systemem plik\u00f3w tmps. Nie jest to kompletny system pami\u0119ci RAM, ale mo\u017ce by\u0107 r\u00f3wnie\u017c zapisany na dysku twardym. Dane<\/a> Z wyj\u0105tkiem. Dzi\u0119ki temu pami\u0119\u0107 na ramdysku nie staje si\u0119 zbyt ma\u0142a. Je\u015bli dysk jest pusty, nie mo\u017ce wykorzysta\u0107 \u017cadnego miejsca na dysku, a partycje te mog\u0105 by\u0107 montowane w czasie uruchamiania.
\nDrugi spos\u00f3b to sformatowanie dysku twardego. W ten spos\u00f3b dany obszar mo\u017ce zosta\u0107 wybrany jako dysk RAM. Opcja -m0 powinna zapewni\u0107, \u017ce \u017cadne miejsce nie zostanie zarezerwowane dla u\u017cytkownika root. To by zaj\u0119\u0142o miejsce. Skutecznie nale\u017cy zabra\u0107 zasoby systemowe. W ten spos\u00f3b pami\u0119\u0107 jest mniejsza z przegrodami. Celem jest ramdisk, kt\u00f3rego nie mo\u017cna odczyta\u0107 ani napisa\u0107, ale kt\u00f3ry ma poprawki. Pewnie trzeba b\u0119dzie to przyzna\u0107. Rozmiar ramdysku mo\u017ce by\u0107 wywo\u0142ywany i zmieniany za pomoc\u0105 specjalnych komend. Przy ka\u017cdym ponownym uruchomieniu dysk znika ponownie, wi\u0119c nale\u017cy utworzy\u0107 skrypt, kt\u00f3ry zapisze polecenia. W ten spos\u00f3b nie trzeba ponownie wpisywa\u0107 polece\u0144.
\nTrzeci spos\u00f3b to praca z systemem plik\u00f3w ramfs. R\u00f3\u017cni si\u0119 to od systemu plik\u00f3w tmpfs tym, \u017ce dane s\u0105 zamieniane. To r\u00f3wnie\u017c u\u0142atwia tworzenie. Dysk jest dynamicznie zmieniany, a partycja jest zawsze montowana podczas rozruchu. Mo\u017cna temu zapobiec za pomoc\u0105 edytora i uprawnie\u0144 roota.<\/p>\n

Rozmiary dysk\u00f3w RAM<\/h3>\n

Ka\u017cdy z utworzonych dysk\u00f3w Ram mo\u017ce by\u0107 utrzymywany w r\u00f3\u017cnych rozmiarach. To jest inne dla ka\u017cdego. System powinien by\u0107 dost\u0119pny jako wystarczaj\u0105ca ilo\u015b\u0107 pami\u0119ci RAM i powinna by\u0107 r\u00f3wnie\u017c dost\u0119pna pami\u0119\u0107 SWAP lub SWAP. Ale to spowolni\u0142oby pr\u0119dko\u015b\u0107 dysku RAM. 1GB pami\u0119ci RAM powinna by\u0107 cz\u0119sto wystarczaj\u0105ca.<\/p>\n

Przewodnik dla Linuksa mo\u017cna znale\u017a\u0107 w artykule\u00a0Tworzenie Ramdysku w celu przyspieszenia Amavisa pod Linuksem<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

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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