{"id":120994,"date":"2024-12-16T15:46:10","date_gmt":"2024-12-16T13:46:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kvm-regressii-proizvoditelnosti-i-obsuzhdenie-podderzhki-32-razryadnyh-sistem"},"modified":"2024-12-16T15:46:10","modified_gmt":"2024-12-16T13:46:10","slug":"kvm-regressii-proizvoditelnosti-i-obsuzhdenie-podderzhki-32-razryadnyh-sistem","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/kvm-regressii-proizvoditelnosti-i-obsuzhdenie-podderzhki-32-razryadnyh-sistem","title":{"rendered":"KVM: regrese v\u00fdkonu a diskuse o podpo\u0159e 32bitov\u00fdch syst\u00e9m\u016f","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Do j\u00e1dra Linux 6.13-rc3 byla p\u0159ijata zm\u011bna, kter\u00e1 eliminuje regresi v\u00fdkonu v hypervizoru KVM, zp\u016fsobenou pomal\u00fdm zpracov\u00e1n\u00edm v\u00fdzev CPUID na nov\u00fdch CPU. Nap\u0159\u00edklad na CPU Intel Emerald Rapids se operace s CPUID vykon\u00e1vaj\u00ed 3-4kr\u00e1t pomaleji ne\u017e na CPU Intel Skylake. Tato vlastnost vedla ke sn\u00ed\u017een\u00ed v\u00fdkonu hypervizoru KVM, kter\u00fd pou\u017e\u00edv\u00e1 CPUID b\u011bhem ukl\u00e1d\u00e1n\u00ed a obnoven\u00ed stavu procesoru p\u0159i ka\u017ed\u00e9m p\u0159epnut\u00ed \u0159\u00eddic\u00edho toku na virtu\u00e1ln\u00ed stroj, pokud je pou\u017eita vno\u0159en\u00e1 virtualizace. Pro vy\u0159e\u0161en\u00ed probl\u00e9mu byl do v\u011btve j\u00e1dra 6.13 p\u0159ijat zjednodu\u0161en\u00fd patch, kter\u00fd umo\u017enil sn\u00ed\u017eit dobu operace a\u017e o 40 % i na CPU rodiny Skylake d\u00edky ke\u0161ov\u00e1n\u00ed CPUID. V j\u00e1d\u0159e 6.14 bude p\u0159edstavena kompletn\u00ed verze patche, kter\u00e1 d\u00e1le zlep\u0161\u00ed v\u00fdkon. <\/p>\n

Krom\u011b toho lze zm\u00ednit diskuzi na mailing listu v\u00fdvoj\u00e1\u0159\u016f j\u00e1dra Linux o ukon\u010den\u00ed podpory 32bitov\u00fdch syst\u00e9m\u016f v hypervizoru. KVM<\/a>P\u016fvodn\u011b byl pro j\u00e1dro navr\u017een patch, kter\u00fd odstra\u0148uje podporu virtualizace KVM na platform\u011b x86-32. V reakci na to byly vyj\u00e1d\u0159eny obavy, \u017ee podpora x86-32 m\u016f\u017ee b\u00fdt u\u017eite\u010dn\u00e1 pro testov\u00e1n\u00ed funkce hostitelsk\u00e9ho re\u017eimu obecn\u011b na 32bitov\u00fdch syst\u00e9mech, proto\u017ee v j\u00e1d\u0159e krom\u011b x86-32 z\u016fst\u00e1vaj\u00ed je\u0161t\u011b t\u0159i 32bitov\u00e9 architektury podporovan\u00e9 v KVM. V reakci byl p\u0159edlo\u017een dal\u0161\u00ed patch, tentokr\u00e1t odstra\u0148uj\u00edc\u00ed z KVM podporu v\u0161ech 32bitov\u00fdch syst\u00e9m\u016f. <\/p>\n

Touha zbavit se podpory 32bitov\u00fdch syst\u00e9m\u016f je vysv\u011btlena t\u00edm, \u017ee i na masov\u011b pou\u017e\u00edvan\u00fdch 32bitov\u00fdch procesorech ARM, jako je ARM Cortex A7, se virtualizace nevyvinula a jej\u00ed pou\u017eit\u00ed. virtu\u00e1ln\u00edch stroj\u016f<\/a> Na 32bitov\u00fdch syst\u00e9m\u00e1ch ARM bylo tak vz\u00e1cn\u00e9, \u017ee podpora t\u011bchto syst\u00e9m\u016f v KVM byla odstran\u011bna v roce 2020, ani\u017e by to vyvolalo protesty. Uv\u00e1d\u00ed se, \u017ee pro ostatn\u00ed 32bitov\u00e9 syst\u00e9my zm\u011bn\u00ed se to pouze exoti\u010dt\u011bj\u0161\u00ed platformy, kter\u00e9 byly dlouho nepou\u017e\u00edv\u00e1ny v praxi nebo nikdy nebyly popul\u00e1rn\u00ed. Mezi procesory, kter\u00fdch se patch dot\u00fdk\u00e1, pat\u0159\u00ed: Intel Core Duo\/Silverthorne, PowerPC e300\/e500\/e600 a MIPS P5600. Patch byl zve\u0159ejn\u011bn jako RFC, co\u017e znamen\u00e1, \u017ee byl p\u0159edlo\u017een k diskusi.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux 6.13-rc3 \u043f\u0440\u0438\u043d\u044f\u0442\u043e \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435, \u0443\u0441\u0442\u0440\u0430\u043d\u044f\u044e\u0449\u0435\u0435 \u0440\u0435\u0433\u0440\u0435\u0441\u0441\u0438\u044e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0432 \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0435 KVM, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0443\u044e \u0441 \u043c\u0435\u0434\u043b\u0435\u043d\u043d\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u0432\u044b\u0437\u043e\u0432\u043e\u0432 CPUID \u043d\u0430 \u043d\u043e\u0432\u044b\u0445 CPU, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043d\u0430 CPU Intel Emerald Rapids \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 c CPUID \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u044e\u0442\u0441\u044f \u0432 3-4 \u0440\u0430\u0437\u0430 \u043c\u0435\u0434\u043b\u0435\u043d\u043d\u0435\u0435, \u0447\u0435\u043c \u043d\u0430 CPU Intel Skylake. \u041f\u043e\u0434\u043e\u0431\u043d\u0430\u044f \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u0438\u0432\u0435\u043b\u0430 \u043a \u0441\u043d\u0438\u0436\u0435\u043d\u0438\u044e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 KVM, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 CPUID \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u0441\u043e\u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-120994","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47KVM: zhor v\u00fdkonu a diskuse o podpo\u0159e 32bitov\u00fdch syst\u00e9m\u016f | ProHoster","description":"Do j\u00e1dra Linux 6.13-rc3 byla p\u0159ijata zm\u011bna, kter\u00e1 eliminuje regresi v\u00fdkonu v hypervizoru KVM, zp\u016fsobenou pomal\u00fdm zpracov\u00e1n\u00edm v\u00fdzev CPUID na nov\u00fdch CPU, nap\u0159\u00edklad na CPU Intel Emerald 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