Malo osungiramo zinthu, omwe amapangitsa kusintha kwa Btrfs m'nthambi zamtsogolo za Linux kernel, avomereza zigamba ndi kukhazikitsa ndondomeko yoyendetsera ntchito zowerengera mu RAID1, pogwiritsa ntchito "Round-robin" algorithm. Kuti athe kugawa zozungulira zowerengera zowerengera mu "/sys/fs/btrfs/ /read_policy" muyenera kuyika mtengo wa "round-robin:[min_contiguous_read]", momwe parameter yosankha "min_contiguous_read" imatsimikizira kukula kochepa kwa zopempha kuti zikhale bwino pakati pa magalasi (mtengo wokhazikika ndi 256 KiB).
Poyambirira, kusanja kwa RAID1 ku Btrfs kunachitika kutengera PID ya ndondomeko yomwe idapempha I/O. Chiwembuchi chinagwira ntchito bwino m'machitidwe omwe katunduyo amapangidwa ndi njira zambiri zosiyana, koma ndi ntchito imodzi yokha sanalole kukwaniritsa ntchito yaikulu. Mwachitsanzo, m'mayesero omwe adachitidwa, kuthandizira ndondomeko ya "round-robin" inachepetsa nthawi yogwiritsira ntchito ndondomeko yowonongeka kuchokera ku masekondi 18 mpaka 8.8.
Kuphatikiza apo, kusintha kwawonjezeredwa komwe kumagwiritsa ntchito parameter ya "devid:" " mu"/sys/fs/btrfs//read_policy". Izi zimalepheretsa kusanja ndikuwongolera ntchito zowerengera kuchokera pa disk yomwe yatchulidwa.
Source: opennet.ru
