{"id":113018,"date":"2024-01-20T23:28:04","date_gmt":"2024-01-20T21:28:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opyt-sozdaniya-hranilishha-ceph-c-propusknoj-sposobnostyu-tebibajt-v-sekundu"},"modified":"2024-01-20T23:28:04","modified_gmt":"2024-01-20T21:28:06","slug":"opyt-sozdaniya-hranilishha-ceph-c-propusknoj-sposobnostyu-tebibajt-v-sekundu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/opyt-sozdaniya-hranilishha-ceph-c-propusknoj-sposobnostyu-tebibajt-v-sekundu","title":{"rendered":"Ceph'i andmestikuhoone loomise kogemus tebibaiti l\u00e4bilaskev\u00f5imega sekundis","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Clyso insener kokkuv\u00f5tlikult jagas kogemusi andmeklusteri loomisel, mis on \u00fcles ehitatud t\u00f5rkekindlale jagatud s\u00fcsteemile Ceph, mille l\u00e4bilaskev\u00f5ime \u00fcletab tebibaiti sekundis. T\u00f5detakse, et see on esimene Ceph'i baasil t\u00f6\u00f6tav klaster, mis suutis sellise tulemuse saavutada, kuid inseneridel tuli enne esitatud tulemuse saavutamist \u00fcletada mitmeid mitteilmseid takistusi. <\/p>\n

N\u00e4iteks piisab j\u00f5udluse t\u00f5stmiseks 10-20% v\u00f5rra BIOS-i energias\u00e4\u00e4stu seadetes seadmete maksimaalses j\u00f5udluses t\u00f6\u00f6tamiseks lubamisest ja c-state'i v\u00e4ljal\u00fclitamisest (c-state muudetakse energias\u00e4\u00e4stu parameetreid vastavalt koormusele, mis kajastub Ceph'is). Samuti ilmnes, et NVMe-m\u00e4lu kasutamisel kulutab Linuxi tuum m\u00e4rkimisv\u00e4\u00e4rse osa ajast spin-lockide t\u00f6\u00f6tlemisega IOMMU kaardistamise v\u00e4rskendamise protsessis. IOMMU v\u00e4ljal\u00fclitamine tuumas t\u00f5i kaasa m\u00e4rkimisv\u00e4\u00e4rse j\u00f5udluse kasvu plokkide kirjutamise ja lugemise testides, mille suurus on 4MB. <\/p>\n

\u041f\u0440\u0438 \u044d\u0442\u043e\u043c \u043e\u0442\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 IOMMU \u043d\u0435 \u0440\u0435\u0448\u0438\u043b\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0441 \u043f\u0440\u043e\u0441\u0435\u0434\u0430\u043d\u0438\u0435\u043c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0438 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u043e\u0439 \u0437\u0430\u043f\u0438\u0441\u0438 \u0431\u043b\u043e\u043a\u043e\u0432, \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u043c 4KB. \u0420\u0430\u0437\u0431\u0438\u0440\u0430\u044f\u0441\u044c \u0432 \u0447\u0451\u043c \u0434\u0435\u043b\u043e, \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u044b \u043d\u0430\u0442\u043e\u043b\u043a\u043d\u0443\u043b\u0438\u0441\u044c \u043d\u0430 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0432 \u0441\u0431\u043e\u0440\u043e\u0447\u043d\u044b\u0445 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u044f\u0445 Ceph \u043e\u0442 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432 Gentoo \u0438 Ubuntu, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0432\u043a\u043b\u044e\u0447\u0430\u043b\u0438 \u0441\u0431\u043e\u0440\u043a\u0443 \u0441 \u043e\u043f\u0446\u0438\u0435\u0439 RelWithDebInfo, \u0442\u0430\u043a \u043a\u0430\u043a \u0441 \u043d\u0435\u0439 \u0432 GCC \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u043b\u0441\u044f \u0440\u0435\u0436\u0438\u043c \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438 «-O2», \u043f\u0440\u0438 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0437\u0430\u043c\u0435\u0442\u043d\u043e \u0432\u043e\u0437\u0440\u0430\u0441\u0442\u0430\u043b\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c Ceph. \u041a \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 \u0442\u0430\u043a\u0436\u0435 \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u043b\u0430 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0446\u0438\u044f \u0441 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u043e\u0439 TCMalloc. \u0418\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u0444\u043b\u0430\u0433\u043e\u0432 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0446\u0438\u0438 \u0438 \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f TCMalloc \u043f\u0440\u0438\u0432\u0435\u043b\u043e \u043a \u0441\u043d\u0438\u0436\u0435\u043d\u0438\u044e \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0443\u043f\u0430\u043a\u043e\u0432\u043a\u0438 (compaction) \u0432 \u0442\u0440\u0438 \u0440\u0430\u0437\u0430 \u0438 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0437\u0430\u043f\u0438\u0441\u0438 \u0431\u043b\u043e\u043a\u0430\u043c\u0438 4K \u0432 \u0434\u0432\u0430 \u0440\u0430\u0437\u0430. \u0412 \u0444\u0438\u043d\u0430\u043b\u0435 \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0431\u044b\u043b\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0434\u0435\u043d\u0430 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043a Reef RocksDB \u0438 \u0433\u0440\u0443\u043f\u043f \u0440\u0430\u0437\u043c\u0435\u0449\u0435\u043d\u0438\u044f (PG). <\/p>\n

Klastri koostamiseks kasutati 68 s\u00f5lme. serverite<\/a> Dell PowerEdge R6615 koos CPU AMD EPYC 9454P 48C\/96T. Igas s\u00f5lmes on 10 NVMe-m\u00e4lu Dell 15.36TB, kaks Ethernet-adapterit 100GbE Mellanox ConnectX-6 ja 192 GB RAM-i. Tarkvara p\u00f5hineb Ubuntu 20.04.6-l ja Ceph 17.2.7-l. Klastris, mis koosneb 63 s\u00f5lmest, on \u00fcles seatud 630 OSD-d (Object Storage Daemon, taustprotsess, mis haldab andmete salvestamist kohalikus salvestuses, \u00fcks OSD igas NVMe-m\u00e4lus), kolm MON-protsessi (monitor, j\u00e4lgib klastri seisukorda) ja \u00fcks MGR-protsess (Manager, halduss\u00fcsteem). Salvestusruum on 8.2 PB. <\/p>\n

\u041f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u0438 \u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f\u0445 \u0447\u0442\u0435\u043d\u0438\u044f \u0431\u043b\u043e\u043a\u043e\u0432 4\u041c \u0441\u043e\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \t1025 GiB\/s, \u0437\u0430\u043f\u0438\u0441\u0438 — 270 GiB\/s. \u041f\u0440\u0438 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u043e\u043c \u0447\u0442\u0435\u043d\u0438\u0438 \u0431\u043b\u043e\u043a\u043e\u0432 4KB \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0441\u0442\u0430\u0432\u0438\u043b\u0430 25.5 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u043e\u0432 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0447\u0442\u0435\u043d\u0438\u044f \u0432 \u0441\u0435\u043a\u0443\u043d\u0434\u0443 \u0438 4.9 \u043c\u043b\u043d \u043f\u0440\u0438 \u0437\u0430\u043f\u0438\u0441\u0438. \u0412\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0443\u043c\u0435\u043d\u044c\u0448\u0438\u043b\u043e \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0443\u044e \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u0438 \u0447\u0442\u0435\u043d\u0438\u0438 \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e \u0434\u043e 750 GiB\/s. \u041f\u0440\u0438 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u0438 \u043a\u043e\u0434\u043e\u0432 \u043a\u043e\u0440\u0440\u0435\u043a\u0446\u0438\u0438 \u043e\u0448\u0438\u0431\u043e\u043a EC62 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0441\u0442\u0430\u0432\u0438\u043b\u0430 547 GiB\/s \u043f\u0440\u0438 \u0447\u0442\u0435\u043d\u0438\u0438 \u0438 387 GiB\/s \u043f\u0440\u0438 \u0437\u0430\u043f\u0438\u0441\u0438 (\u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c \u0437\u0430\u043f\u0438\u0441\u0438 \u043e\u043a\u0430\u0437\u0430\u043b\u0430\u0441\u044c \u0432\u044b\u0448\u0435 \u0447\u0435\u043c \u0431\u0435\u0437 \u043a\u043e\u0434\u043e\u0432 \u043a\u043e\u0440\u0440\u0435\u043a\u0446\u0438\u0438), \u0430 \u043f\u0440\u0438 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u043e\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u0435 \t3.4M IOPS \u043f\u0440\u0438 \u0447\u0442\u0435\u043d\u0438\u0438 \u0438 936K IOPS \u043f\u0440\u0438 \u0437\u0430\u043f\u0438\u0441\u0438.

\"Ceph'i<\/center>
\"Ceph'i<\/center> <\/p>\n

Lisaks v\u00f5ib m\u00e4rkida, et septembris saavutati CERNi eksabaiti salvestusklastris sarnane tee\u00e4\u00e4rne l\u00e4bilaskvus, mis on tebibaiti sekundis, mis on \u00fcles ehitatud avatud jaotatud salvestusseadmele EOS, mis p\u00f5hineb XRootD protokollil.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u043d\u0436\u0435\u043d\u0435\u0440 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Clyso \u043e\u0431\u043e\u0431\u0449\u0438\u043b \u043e\u043f\u044b\u0442 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0430 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043d\u0430 \u0431\u0430\u0437\u0435 \u043e\u0442\u043a\u0430\u0437\u043e\u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0439 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Ceph \u0441 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c\u044e, \u043f\u0440\u0435\u0432\u044b\u0448\u0430\u044e\u0449\u0435\u0439 \u0442\u0435\u0431\u0438\u0431\u0430\u0439\u0442 \u0432 \u0441\u0435\u043a\u0443\u043d\u0434\u0443. \u041e\u0442\u043c\u0435\u0447\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u044d\u0442\u043e \u043f\u0435\u0440\u0432\u044b\u0439 \u043a\u043b\u0430\u0441\u0442\u0435\u0440 \u043d\u0430 \u0431\u0430\u0437\u0435 Ceph, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u043c\u043e\u0433 \u0434\u043e\u0441\u0442\u0438\u0433\u043d\u0443\u0442\u044c \u043f\u043e\u0434\u043e\u0431\u043d\u043e\u0433\u043e \u043f\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f, \u043d\u043e \u043f\u0435\u0440\u0435\u0434 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435\u043c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u0430\u043c \u043f\u043e\u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043b\u043e\u0441\u044c \u043f\u0440\u0435\u043e\u0434\u043e\u043b\u0435\u0442\u044c \u0441\u0435\u0440\u0438\u044e \u043d\u0435 \u043e\u0447\u0435\u0432\u0438\u0434\u043d\u044b\u0445 \u043f\u043e\u0434\u0432\u043e\u0434\u043d\u044b\u0445 \u043a\u0430\u043c\u043d\u0435\u0439. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0434\u043b\u044f \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043d\u0430 10-20% \u0431\u044b\u043b\u043e […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":113019,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-113018","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\n","aioseo_head_json":{"title":"\ud83e\udd47Kogemus Ceph'i salvestuse loomisel, mille l\u00e4bilaskvus on tebibaiti sekundis | ProHoster","description":"Clyso insener on kokku v\u00f5tnud kogemuse Cephi talletusklastri loomisel, mille l\u00e4bilaskvus \u00fcletab tebibaiti sekundis. 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