On Wed, Apr 11, 2012 at 03:40:45PM +0700, Eugene Grosbein wrote: > 11.04.2012 15:22, Slawa Olhovchenkov пишет: > > On Wed, Apr 11, 2012 at 02:26:37PM +0700, Eugene Grosbein wrote: > > > >> 11.04.2012 13:48, Sayetsky Anton пишет: > >>> 10 апреля 2012 г. 19:13 пользователь Eugene Grosbein > >>> <[email protected]> написал: > >>>> Ускорение - на обычных мелких записях, а fsck на gjournal выполняется > >>>> мгновенно (только смотрит, были ли orphaned files и удаляет их). > >>> > >>> А вот если нам надо записать много и долго - то будет проблема, печально > >>> это. > >> > >> Интересно, как с такими операциями у ZFS. > >> > > > > напиши тест и я его запущу > > dd if=/some/big/file of=/path/to/zfs bs=какойхочешь
zfs поверх gmirror, чтение с одного диска 140МБ/с, на машине 4ГБ памяти hst# dd if=/dev/zero of=/tmp/big_file bs=128k load: 0.00 cmd: dd 19743 [running] 1.08r 0.00u 0.63s 5% 988k 13936+0 records in 13935+0 records out 1826488320 bytes transferred in 1.084274 secs (1684526448 bytes/sec) load: 0.00 cmd: dd 19743 [running] 2.22r 0.00u 1.24s 10% 1008k 31642+0 records in 31641+0 records out 4147249152 bytes transferred in 2.218045 secs (1869776835 bytes/sec) load: 0.40 cmd: dd 19743 [running] 4.99r 0.02u 2.73s 23% 1008k 78054+0 records in 78053+0 records out 10230562816 bytes transferred in 4.988230 secs (2050940481 bytes/sec) load: 0.93 cmd: dd 19743 [running] 7.13r 0.02u 3.96s 27% 1008k 112863+0 records in 112862+0 records out 14793048064 bytes transferred in 7.129851 secs (2074804628 bytes/sec) load: 0.93 cmd: dd 19743 [running] 9.65r 0.03u 5.26s 33% 1008k 152797+0 records in 152797+0 records out 20027408384 bytes transferred in 9.651928 secs (2074964504 bytes/sec) load: 0.93 cmd: dd 19743 [running] 11.11r 0.04u 5.92s 37% 1008k 175945+0 records in 175944+0 records out 23061331968 bytes transferred in 11.116332 secs (2074545080 bytes/sec) load: 0.93 cmd: dd 19743 [running] 12.92r 0.06u 6.89s 39% 1008k 205851+0 records in 205850+0 records out 26981171200 bytes transferred in 12.923906 secs (2087694774 bytes/sec) load: 0.93 cmd: dd 19743 [running] 14.86r 0.07u 7.97s 42% 1008k 237386+0 records in 237385+0 records out 31114526720 bytes transferred in 14.860283 secs (2093804434 bytes/sec) load: 1.26 cmd: dd 19743 [running] 16.29r 0.08u 8.68s 45% 1008k 259689+0 records in 259688+0 records out 34037825536 bytes transferred in 16.289813 secs (2089516034 bytes/sec) load: 1.26 cmd: dd 19743 [running] 17.76r 0.09u 9.43s 44% 1008k 283420+0 records in 283419+0 records out 37148295168 bytes transferred in 17.770790 secs (2090413254 bytes/sec) load: 1.26 cmd: dd 19743 [running] 20.03r 0.10u 10.66s 48% 1008k 321023+0 records in 321022+0 records out 42076995584 bytes transferred in 20.028753 secs (2100829517 bytes/sec) load: 1.24 cmd: dd 19743 [running] 21.76r 0.10u 11.53s 47% 1008k 348931+0 records in 348930+0 records out 45734952960 bytes transferred in 21.764255 secs (2101379205 bytes/sec) load: 1.24 cmd: dd 19743 [running] 24.22r 0.12u 12.86s 51% 1008k 389461+0 records in 389461+0 records out 51047432192 bytes transferred in 24.223497 secs (2107351877 bytes/sec) load: 1.54 cmd: dd 19743 [running] 27.05r 0.12u 14.40s 47% 1008k 437520+0 records in 437519+0 records out 57346490368 bytes transferred in 27.052199 secs (2119845788 bytes/sec) load: 1.54 cmd: dd 19743 [runnable] 30.43r 0.12u 16.11s 49% 1008k 490545+0 records in 490544+0 records out 64296583168 bytes transferred in 30.432443 secs (2112764423 bytes/sec) load: 1.48 cmd: dd 19743 [runnable] 57.59r 0.22u 30.21s 53% 1008k 934544+0 records in 934543+0 records out 122492420096 bytes transferred in 57.605534 secs (2126400216 bytes/sec) ^C1314907+0 records in 1314906+0 records out 172347359232 bytes transferred in 81.009483 secs (2127496098 bytes/sec)
