On 19 August 2013 10:47, Josep Lladonosa <jlladono@xxxxxxxxx> wrote: > 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 > -- Hello, I saw http://evilpiepirate.org/git/linux-bcache.git/commit/?h=bcache-for-3.11&id=9df79a37eeb7ee89dc56aeed3051be676369359a and have patched 3.11.0-rc6 with it. This eliminates the delay. Now a kernel image installs in about 20 seconds. :) Thanks! -- -- 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
