On Thu, Jul 30, 2009 at 11:35 AM, Tracy Reed<treed@xxxxxxxxxxxxxxx> wrote: > On Wed, Jul 29, 2009 at 11:25:47PM -0700, Tirumala Reddy Marri spake thusly: >> I have two 1 tera byte disks in RAID-1 configuration. When I started >> RAID-1 array initial speed was 100MBps by the time it finishes the speed >> was <50MBps. Is there is any reason for this behavior ? Isn't speed >> supposedly uniform. > > I currently have a RAID-1 rebuild running and cat /proc/mdstat shows > speed=1481K/sec. This seems incredibly slow to me. That's just just > about one and a half megs per second. I'm wondering if this machine > has some more serious hardware problem. No errors showing up in dmesg > or /var/log/messages or anything though. If there is any read/write activity on the array, resync speeds will slow down significantly as it tries to minimize the effect on system performance by default. You can try upping the min sync speed through /proc to increase the sync speed, but array performance will suffer more. -Dave -- 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
