Roman Gushchin () sitere na Facebook na ndepụta nzipu ozi nke ndị mmepe Linux kernel, otu patches nwere mmejuputa njikwa oke ebe nchekwa ọhụrụ. (onye na-ahụ maka ebe nchekwa slab). Onye njikwa ọhụrụ ahụ bụ ihe ama ama maka ịkwaga akaụntụ slab site na ọkwa ebe nchekwa gaa na ọkwa kernel, nke na-eme ka o kwe omume ikesa ibe slab na otu dị iche iche, kama ịkenye cache slab dị iche iche maka otu ọ bụla.
Usoro a tụrụ aro na-eme ka o kwe omume ịbawanye arụmọrụ nke iji slab, belata nha nke ebe nchekwa ejiri maka slab site na 30-45%, ma belata oke oriri ebe nchekwa nke kernel. Site n'ibelata ọnụ ọgụgụ slabs ndị na-adịghị ebugharị, enwekwara mmetụta dị mma n'ibelata nkewa ebe nchekwa. Onye na-ahụ maka ebe nchekwa ọhụrụ na-eme ka koodu ahụ dị mfe maka ịza ajụjụ maka slabs na ọ chọghị iji algọridim mgbagwoju anya maka ịmepụta na ihichapụ cache slab maka otu ọ bụla. Otu ebe nchekwa niile dị na mmejuputa ọhụrụ a na-eji usoro nchekwa slab a na-ahụkarị, yana ogologo ndụ nke cache slab anaghịzi ejikọta na ndụ nke ndị arụnyere site na cgroup. na ebe nchekwa ojiji.
Ngụkọ ndekọ ego ziri ezi nke etinyere na onye na-ahụ maka slab ọhụrụ kwesịrị iburu CPU ka ukwuu, mana n'omume, ọdịiche ahụ ghọrọ ihe na-abaghị uru. Karịsịa, ejirila onye na-ahụ maka slab ọhụrụ ahụ mee ihe ruo ọtụtụ ọnwa na mmepụta ihe nkesa Facebook na-ejikwa ụdị ọrụ dị iche iche, ọ dịghịkwa ihe ọ bụla a na-ahụ anya ka a chọpụtabeghị. N'otu oge ahụ, enwere mbelata dị ukwuu na oriri ebe nchekwa - na ụfọdụ ndị ọbịa ọ ga-ekwe omume ịchekwa ihe ruru 1GB nke ebe nchekwa, mana ihe ngosi a dabere n'ụdị ibu ahụ, mkpokọta RAM, ọnụọgụ CPU. na atụmatụ nke ịrụ ọrụ na ebe nchekwa. Nlele ndị gara aga Mbelata oriri ebe nchekwa site na 650-700 MB (42% nke ebe nchekwa slab) na njedebe webụ, 750-800 MB (35%) na sava nwere cache DBMS na 700 MB (36%) na sava DNS.
isi: opennet.ru