On 9/19/2012 2:40 AM, Roman Mamedov wrote: > "/sys/block/md*/md/stripe_cache_size" is absolutely the first thing one should > look at when facing a problem with md RAID5/6 write performance. No. The first thing one should do is verify that the md/RAID stripe is properly aligned to physical sector boundaries on the drives, and that the filesystem is properly aligned to the md/RAID stripe size. If these are not correct then tweaking stripe_cache_size isn't going to help much, if at all. -- Stan -- 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
