{"id":99458,"date":"2021-03-17T16:22:53","date_gmt":"2021-03-17T14:22:53","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/pervyj-stabilnyj-vypusk-zlib-ng-vysokoproizvoditelnogo-forka-zlib"},"modified":"2021-03-17T16:22:53","modified_gmt":"2021-03-17T14:22:53","slug":"pervyj-stabilnyj-vypusk-zlib-ng-vysokoproizvoditelnogo-forka-zlib","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/pervyj-stabilnyj-vypusk-zlib-ng-vysokoproizvoditelnogo-forka-zlib","title":{"rendered":"Zlib-ng esimene stabiilne v\u00e4ljaanne, k\u00f5rgetootlik zlib forki","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Zlib-ng 2.0 teekond vabastamine, mis on m\u00e4rgitud projekti esimese stabiilse v\u00e4ljaandena (j\u00e4rgneb sellele juba parandav v\u00e4ljaanne 2.0.1). Zlib-ng on API tasemel \u00fchilduv zlib-iga, kuid pakub t\u00e4iendavaid optimeerimisi, mis ei ole ametlikku zlib'i hoidlat vastu v\u00f5etud konservatiivse l\u00e4henemise t\u00f5ttu muudatuste vastuv\u00f5tmiseks. \u00dcheskoos pakutakse moderniseeritud API-d, mis p\u00f5hineb zlib-il, kuid on muutunud lihtsamaks portimiseks. Projekti kood on kirjutatud C keeles ja levitatakse Zlib litsentsi alusel. <\/p>\n

X86_64 s\u00fcsteemidel l\u00e4bi viidud testid n\u00e4itasid, et Zlib-ng kompressiooni teostamisel on umbes 4 korda kiirem kui zlib ning 2.1 korda kiirem kui gzip. Dekompressioonis on Zlib-ng umbes 2.4 korda kiirem zlib-ist ja 1.8 korda kiirem gzip-ist. Oluliste kahem\u00f5ttelisuse \/ dekompressiooni sooritusv\u00f5ime t\u00f5usude saavutamine on peamiselt v\u00f5imalik t\u00e4nu vektoriliste instruktsioonide kasutamisele nagu SSE*, AVX2, VSX ja Neon. <\/p>\n

Lisanud on Adler32 kontrollsumma algoritmi rakenduse, mis on optimeeritud SSSE3, AVX2, Neon ja VSX instruktsioonide abil; CRC32-B rakenduse PCLMULQDQ ja ACLE alusel; t\u00e4iustatud hash-tabelid; Slide hashi rakenduse SSE2, AVX2, Neon ja VSX alusel, ning SSE4.2 ja AVX2 alusel v\u00f5rdlusoperatsioonid. Samuti on kaasatud sooritusv\u00f5ime parandamise muudatused, mida on kasutatud Intel'i ja Cloudflare'i harude puhul. Buffereid on optimeeritud. CMake ja NMake ehituss\u00fcsteemide tugi on lisatud. Tootearenduse testimiseks on kasutatud pideva integreerimise s\u00fcsteeme. <\/p>\n

Zlib-ng sisaldab ka distributsioonipakettides akumuleeritud plaastrite, elik paranduste, integreerimist ning on puhastatud koodist, mis sisaldas m\u00f6\u00f6dav\u00f5tteid, mis olid vajalikud zlib'i toetamiseks vanade kompilaatorite ja platvormide puhul, kuid takistavad t\u00f5husamate meetodite rakendamist (nt piirangud, mis on vajalikud 16-bitiste s\u00fcsteemide ja ANSI C mitte\u00fchilduvate kompilaatorite toetamiseks). T\u00f5rgete tuvastamiseks ja parandamiseks on tehtud t\u00f6\u00f6d, mida on v\u00e4lja toonud staatilised anal\u00fcsaatorid, fuzzing-testimise s\u00fcsteemid ning m\u00e4lu keerukuse probleemide tuvastamise t\u00f6\u00f6riistad (AddressSanitizer ja MemorySanitizer).
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 zlib-ng 2.0 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043e\u0442\u043c\u0435\u0447\u0435\u043d \u043a\u0430\u043a \u043f\u0435\u0440\u0432\u044b\u0439 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 (\u0441\u043b\u0435\u0434\u043e\u043c \u0443\u0436\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0432\u044b\u043f\u0443\u0441\u043a 2.0.1). Zlib-ng \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c \u0441 zlib \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 API, \u043d\u043e \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438, \u043d\u0435 \u043f\u0440\u0438\u043d\u044f\u0442\u044b\u0435 \u0432 \u043e\u0444\u0438\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0439 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0439 zlib \u0438\u0437-\u0437\u0430 \u043a\u043e\u043d\u0441\u0435\u0440\u0432\u0430\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u043f\u043e\u0434\u0445\u043e\u0434\u0430 \u043a \u043f\u0440\u0438\u0451\u043c\u0443 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439. \u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d \u043c\u043e\u0434\u0435\u0440\u043d\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 API, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043d\u0430 zlib, \u043d\u043e \u0438\u0437\u043c\u0435\u043d\u0451\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u0443\u043f\u0440\u043e\u0449\u0435\u043d\u0438\u044f \u043f\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 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