Hello, I wrote some days ago about low rates on "intense" writes, and tried the given patch in the reply. It did not work for me. Kernel 3.11.0-rc5 with last bcache from git was also not solving this issue. Today I have tried 3.11.0-rc6 and unfortunately, I get similar results. I add here results of iostat while dpkg -i linux-headers (or installation of a linux-image). They take minutes, minutes, minuuuuuutes... ;) # iostat -d 5 Linux 3.11.0-rc6 (minijep) 19/08/13 _x86_64_ (8 CPU) Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 19,70 78,48 350,69 34506 154188 sdb 64,05 913,99 306,53 401856 134772 bcache0 96,15 915,06 350,68 402322 154184 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 409,20 0,80 14871,20 4 74356 sdb 1299,60 6,40 10969,60 32 54848 bcache0 2434,00 7,20 14871,20 36 74356 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 10,60 0,00 26,40 0 132 sdb 10,80 0,00 67,20 0 336 bcache0 16,80 0,00 26,40 0 132 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 10,40 0,00 15,20 0 76 sdb 10,60 0,00 56,80 0 284 bcache0 13,80 0,00 15,20 0 76 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 10,60 0,00 16,80 0 84 sdb 10,60 0,00 56,80 0 284 bcache0 14,40 0,00 16,80 0 84 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 10,80 0,00 28,00 0 140 sdb 11,20 0,00 70,40 0 352 bcache0 17,20 0,00 28,00 0 140 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 125,60 0,00 3951,20 0 19756 sdb 22,20 0,00 3906,40 0 19532 bcache0 971,20 0,00 3951,20 0 19756 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 16,40 0,00 274,40 0 1372 sdb 18,40 0,00 327,20 0 1636 bcache0 22,00 0,00 274,40 0 1372 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 10,60 0,00 15,20 0 76 sdb 10,60 0,00 55,20 0 276 bcache0 13,80 0,00 15,20 0 76 -- -- Salutacions...Josep -- -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
