On 30 January 2011 04:44, Roman Mamedov <rm@xxxxxxxxxx> wrote: > On Sun, 30 Jan 2011 00:18:34 +0000 > Mathias BurÃn <mathias.buren@xxxxxxxxx> wrote: > >> I ran the benchmark found on the page (except for writes); results: > > That's kinda unfortunate, as stripe_cache_size only (or mostly) affects writes. > > -- > With respect, > Roman > Right, it's just that I don't want to destroy my data. I've ran a few bonnie++ benchmarks with different mount options though. You can find them here: http://stuff.dyndns.org/logs/bonnie_results.html It actually looks like stripe=384 helped performance a bit. Currently retrying the same mount options but with 32MB stripe cache instead of 8MB. Then you have all the readahead settings as well, like: blockdev --setra 8192 /dev/sd[abcdefgh] blockdev --setra 65536 /dev/md0 And disabling NCQ; for i in sdb sdc sdd sde sdf sdg; do echo 1 > /sys/block/"$i"/device/queue_depth; done I'll try those settings later. // Mathias -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
