{"id":104635,"date":"2022-07-12T09:36:46","date_gmt":"2022-07-12T07:36:46","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-yadra-linux-predlozhena-realizacziya-funkczii-memchr-rabotayushhaya-do-4-raz-bystree"},"modified":"2022-07-12T09:36:46","modified_gmt":"2022-07-12T07:36:46","slug":"dlya-yadra-linux-predlozhena-realizacziya-funkczii-memchr-rabotayushhaya-do-4-raz-bystree","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/dlya-yadra-linux-predlozhena-realizacziya-funkczii-memchr-rabotayushhaya-do-4-raz-bystree","title":{"rendered":"P\u00ebr b\u00ebrtham\u00ebn Linux \u00ebsht\u00eb propozuar nj\u00eb zbatim i funksionit memchr, q\u00eb funksionon deri n\u00eb 4 her\u00eb m\u00eb shpejt","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

P\u00ebr t'u p\u00ebrfshir\u00eb n\u00eb b\u00ebrtham\u00ebn Linux \u00ebsht\u00eb propozuar nj\u00eb grup patch-esh me nj\u00eb zbatim t\u00eb optimizuar t\u00eb funksionit memchr(), q\u00eb p\u00ebrdoret p\u00ebr t\u00eb k\u00ebrkuar nj\u00eb karakter n\u00eb nj\u00eb masiv. Ndryshe nga varianti i vjet\u00ebr, ku p\u00ebrdorej krahasimi byte p\u00ebr byte, zbatimi i propozuar \u00ebsht\u00eb nd\u00ebrtuar duke marr\u00eb parasysh shfryt\u00ebzimin e plot\u00eb t\u00eb regjistrave t\u00eb CPU 64 dhe 32-bit. N\u00eb vend t\u00eb byte-ve, krahasimi b\u00ebhet duke p\u00ebrdorur fjal\u00eb makinerie, duke lejuar t\u00eb krahasohet t\u00eb pakt\u00ebn 4 byte n\u00eb nj\u00eb koh\u00eb. <\/p>\n

N\u00eb k\u00ebrkimet p\u00ebr vargje t\u00eb m\u00ebdha, varianti i ri u tregua m\u00eb i shpejt\u00eb se ai i vjet\u00ebr rreth 4 her\u00eb (p\u00ebr shembull, p\u00ebr vargje me 1000 karaktere). P\u00ebr vargje t\u00eb vogla, efikasiteti i zbatimit t\u00eb ri nuk \u00ebsht\u00eb kaq i duksh\u00ebm, por ende \u00ebsht\u00eb m\u00eb i lart\u00eb krahasuar me variantin fillestar. N\u00eb b\u00ebrtham\u00ebn Linux, madh\u00ebsia e vargjeve t\u00eb p\u00ebrpunuara n\u00eb memchr() arrin deri n\u00eb 512 byte. Rritja e performanc\u00ebs p\u00ebr vargjet me 512 byte, n\u00eb situat\u00ebn kur karakteri i k\u00ebrkuar ndodhet n\u00eb fund t\u00eb vargut, \u00ebsht\u00eb 20%. <\/p>\n

Testimi i b\u00ebrtham\u00ebs 5.18 me variantin e ri t\u00eb \u00abmemchr()\u00bb p\u00ebr arkitektur\u00ebn 32- dhe 64-bit nuk zbuloi asnj\u00eb problem. Rritja totale e performanc\u00ebs s\u00eb n\u00ebnsistemit t\u00eb b\u00ebrtham\u00ebs gjat\u00eb p\u00ebrdorimit t\u00eb variantit t\u00eb optimizuar \u00abmemchr()\u00bb ende nuk \u00ebsht\u00eb vler\u00ebsuar, as si\u00e7 \u00ebsht\u00eb analizuar arsyeshm\u00ebria e z\u00ebvend\u00ebsimit t\u00eb implementimit (n\u00eb kodin e b\u00ebrtham\u00ebs, thirrja e funksionit memchr() haset 129 her\u00eb, p\u00ebrfshir\u00eb n\u00eb kodin e drejtuesve dhe sistemeve t\u00eb skedar\u00ebve).
\n
Burimi: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 \u0441 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 memchr(), \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u043f\u043e\u0438\u0441\u043a\u0430 \u0441\u0438\u043c\u0432\u043e\u043b\u0430 \u0432 \u043c\u0430\u0441\u0441\u0438\u0432\u0435. \u0412 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 \u0441\u0442\u0430\u0440\u043e\u0433\u043e \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u043b\u043e\u0441\u044c \u043f\u043e\u0431\u0430\u0439\u0442\u043e\u0432\u043e\u0435 \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435, \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u0430\u044f \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0430 \u0441 \u0443\u0447\u0451\u0442\u043e\u043c \u043f\u043e\u043b\u043d\u043e\u0433\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f 64- \u0438 32-\u0440\u0430\u0437\u0440\u044f\u0434\u043d\u044b\u0445 \u0440\u0435\u0433\u0438\u0441\u0442\u0440\u043e\u0432 CPU. \u0412\u043c\u0435\u0441\u0442\u043e \u0431\u0430\u0439\u0442\u043e\u0432 \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043c\u0430\u0448\u0438\u043d\u043d\u044b\u0445 \u0441\u043b\u043e\u0432, \u0447\u0442\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0437\u0430 \u0440\u0430\u0437 \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0442\u044c […]<\/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-104635","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\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\udd47P\u00ebr b\u00ebrtham\u00ebn Linux \u00ebsht\u00eb propozuar nj\u00eb zbatim i funksionit memchr, q\u00eb funksionon deri n\u00eb 4 her\u00eb m\u00eb shpejt | ProHoster","description":"P\u00ebr t'u p\u00ebrfshir\u00eb n\u00eb b\u00ebrtham\u00ebn Linux \u00ebsht\u00eb propozuar 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