{"id":102666,"date":"2021-12-19T15:37:03","date_gmt":"2021-12-19T13:37:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-cache-bench-0-2-0-dlya-issledovaniya-effektivnosti-keshirovaniya-fajlov"},"modified":"2021-12-19T15:37:03","modified_gmt":"2021-12-19T13:37:03","slug":"vypusk-cache-bench-0-2-0-dlya-issledovaniya-effektivnosti-keshirovaniya-fajlov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/vypusk-cache-bench-0-2-0-dlya-issledovaniya-effektivnosti-keshirovaniya-fajlov","title":{"rendered":"Udgivelsen af cache-bench 0.2.0 til unders\u00f8gelse af effektiviteten af filcache.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Syv m\u00e5neder efter den forrige udgivelse er cache-bench 0.2.0 blevet frigivet. Cache-bench er et Python-script, der g\u00f8r det muligt at vurdere indflydelsen af indstillingerne for virtuel hukommelse (vm.swappiness, vm.watermark_scale_factor, Multigenerational LRU Framework og andre) p\u00e5 ydeevnen af opgaver, hvis udf\u00f8relse afh\u00e6nger af caching af filoperationer for l\u00e6sning, is\u00e6r under betingelser med mangel p\u00e5 hukommelse. Koden er \u00e5bent tilg\u00e6ngelig under CC0-licensen.  <\/p>\n<p>  Koden til scriptet i version 0.2.0 er n\u00e6sten helt omskrevet. I stedet for at l\u00e6se filer fra en angivet mappe (muligheden -d er fjernet i den nye version) l\u00e6ses der nu fra \u00e9n fil i tilf\u00e6ldige fragmenter af den angivne st\u00f8rrelse.  <\/p>\n<p>  Der er tilf\u00f8jet muligheder:  <\/p>\n<ul>\n<li class=\"l\">  &#8212;file &#8212; stien til filen, som der vil blive l\u00e6st fra.\n<li class=\"l\">  &#8212;chunk &#8212; st\u00f8rrelsen p\u00e5 chunk'en i kibibytes, standard 64.\n<li class=\"l\">  &#8212;mmap &#8212; l\u00e6s fra memory-mapped filobjekt i stedet for at l\u00e6se fra filbeskrivelsen.\n<li class=\"l\">  &#8212;preread &#8212; l\u00e6se (cache) den angivne fil f\u00f8r testen ved sekventiel l\u00e6sning af chunks p\u00e5 1 MiB.\n<li class=\"l\">  &#8212;bloat &#8212; tilf\u00f8je de l\u00e6ste chunks til en liste med det form\u00e5l at \u00f8ge hukommelsesforbruget af processen og skabe en hukommelsesmangel senere.\n<li class=\"l\">  &#8212;interval &#8212; intervallet for udskrift (logning) af resultater i sekunder.    <\/ul>\n<p>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56376\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043f\u0443\u0441\u0442\u044f 7 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u043f\u043e\u0441\u043b\u0435 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0435\u0433\u043e \u0440\u0435\u043b\u0438\u0437\u0430 \u0432\u044b\u0448\u0435\u043b cache-bench 0.2.0. Cache-bench &#8212; \u044d\u0442\u043e Python \u0441\u043a\u0440\u0438\u043f\u0442, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u043e\u0446\u0435\u043d\u0438\u0442\u044c \u0432\u043b\u0438\u044f\u043d\u0438\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043a \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 (vm.swappiness, vm.watermark_scale_factor, Multigenerational LRU Framework \u0438 \u043f\u0440\u043e\u0447\u0438\u0445) \u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0434\u0430\u0447, \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0437\u0430\u0432\u0438\u0441\u0438\u0442 \u043e\u0442 \u043a\u044d\u0448\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0444\u0430\u0439\u043b\u043e\u0432\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0447\u0442\u0435\u043d\u0438\u044f, \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e \u0432 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043d\u0435\u0445\u0432\u0430\u0442\u043a\u0438 \u043f\u0430\u043c\u044f\u0442\u0438. \u041a\u043e\u0434 \u043e\u0442\u043a\u0440\u044b\u0442 \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 CC0. \u041a\u043e\u0434 \u0441\u043a\u0440\u0438\u043f\u0442\u0430 \u0432 \u0432\u0435\u0440\u0441\u0438\u0438 0.2.0 \u043f\u043e\u0447\u0442\u0438 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e [&hellip;]<\/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-102666","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One 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