{"id":41840,"date":"2020-02-17T05:33:00","date_gmt":"2020-02-17T02:33:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/google-opublikoval-novyj-variant-sistemy-raspredeleniya-pamyati-tcmalloc"},"modified":"2020-02-17T05:33:00","modified_gmt":"2020-02-17T02:33:00","slug":"google-opublikoval-novyj-variant-sistemy-raspredeleniya-pamyati-tcmalloc","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/google-opublikoval-novyj-variant-sistemy-raspredeleniya-pamyati-tcmalloc","title":{"rendered":"Google ka publikuar nj\u00eb variant t\u00eb ri t\u00eb sistemit t\u00eb shp\u00ebrndarjes s\u00eb memories TCMalloc","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Kompania Google ka prezantuar<\/a><\/noindex> variant i ri i sistemit t\u00eb shp\u00ebrndarjes s\u00eb memories TCMalloc<\/a><\/noindex>, i cili p\u00ebrdoret n\u00eb shum\u00eb projekte t\u00eb brendshme t\u00eb Google. Kodi i TCMalloc \u00ebsht\u00eb shkruar n\u00eb C++ dhe shp\u00ebrndahet<\/a><\/noindex> licencohet sipas licenc\u00ebs Apache. P\u00ebr funksionim k\u00ebrkohet nj\u00eb kompajler me mb\u00ebshtetje p\u00ebr C++17 p\u00ebr gjuh\u00ebn C++ dhe C11 p\u00ebr gjuh\u00ebn C (gcc 9.2+ ose clang 9.0+). Nga sistemet operative mb\u00ebshtetet mb\u00ebshtetet<\/a><\/noindex> vet\u00ebm Linux (x86, PPC).<\/p>\n

Vlen t\u00eb theksohet se q\u00eb nga viti 2005 ekziston edhe nj\u00eb variant tjet\u00ebr i tcmalloc, i cili \u00ebsht\u00eb shp\u00ebrndar\u00eb<\/a><\/noindex> si pjes\u00eb e paket\u00ebs gperftools<\/a><\/noindex> (Google Performance Tools). K\u00ebto jan\u00eb dy projekte t\u00eb ndryshme<\/a><\/noindex> me rr\u00ebnj\u00eb t\u00eb p\u00ebrbashk\u00ebta. TCMalloc i ri \u00ebsht\u00eb m\u00eb tep\u00ebr nj\u00eb p\u00ebrpjekje p\u00ebr t\u00eb hapur kodin e zhvillimeve aktuale t\u00eb brendshme t\u00eb Google, por p\u00ebr momentin nuk synon t\u00eb ofroj\u00eb nj\u00eb ABI t\u00eb q\u00ebndruesh\u00ebm dhe mb\u00ebshtetje p\u00ebr nj\u00eb gam\u00eb t\u00eb gjer\u00eb sistemesh operative. Mir\u00ebmbajtja e tcmalloc-it t\u00eb vjet\u00ebr nga gperftools do t\u00eb vazhdoj\u00eb, por nuk planifikohet transferimi i ve\u00e7orive t\u00eb reja n\u00eb t\u00eb, si p.sh. lidhja e cache me CPU.<\/p>\n

TCMalloc p\u00ebrfshin nj\u00eb implementim t\u00eb funksionit malloc() t\u00eb gjuh\u00ebs C dhe operatorit C++ \"new\", t\u00eb optimizuar p\u00ebr t\u00eb arritur performanc\u00eb t\u00eb lart\u00eb dhe p\u00ebr p\u00ebrdorim n\u00eb aplikacione shum\u00ebprocesore. TCMalloc gjithashtu ofron mund\u00ebsi introspeksioni dhe profilizimi, duke i lejuar aplikacionit t\u00eb marr\u00eb informacione t\u00eb detajuara mbi p\u00ebrdorimin e memories n\u00eb grumbull. N\u00eb kod aplikohen optimizime t\u00eb bazuara n\u00eb mund\u00ebsit\u00eb moderne t\u00eb gjuh\u00ebs C++, si\u00e7 jan\u00eb
\noperatori delete me specifikim t\u00eb madh\u00ebsis\u00eb<\/a><\/noindex> nga C++14 dhe alokimi i memories me rreshtim<\/a><\/noindex> nga C++17.<\/p>\n

TCMalloc p\u00ebrb\u00ebhet<\/a><\/noindex> nga tre komponent\u00eb: frontend me cache p\u00ebr alokim dhe \u00e7lirim t\u00eb shpejt\u00eb t\u00eb memories, nj\u00eb shtres\u00eb nd\u00ebrmjet\u00ebse p\u00ebr mbushjen e cache-it t\u00eb frontend-it dhe backend-in, q\u00eb kryen operacione t\u00eb tilla si marrja e memories nga sistemi operativ, menaxhimi i blloqeve t\u00eb m\u00ebdha t\u00eb memories s\u00eb pap\u00ebrdorur dhe kthimi i memories s\u00eb tep\u00ebrt p\u00ebrs\u00ebri te OS. Cache \u00ebsht\u00eb pa bllokime dhe funksionon i lidhur me b\u00ebrthamat e CPU, por kthehet te modeli i cache-it t\u00eb lidhur me fijet n\u00ebse mungon funksionaliteti i nevojsh\u00ebm n\u00eb kernelin e OS (lidhja e cache me CPU funksionon vet\u00ebm n\u00eb kernel\u00ebt e rinj t\u00eb Linux). Backend mb\u00ebshtet pun\u00ebn si me faqet e zakonshme t\u00eb memories, ashtu edhe me faqet me madh\u00ebsi t\u00eb rritur (hugepage).<\/p>\n

\"Google<\/a><\/noindex><\/center><\/p>\n

Ve\u00e7orit\u00eb kryesore t\u00eb TCMalloc:<\/p>\n