On 06/20/2011 05:51 PM, Henning Rohlfs wrote:
Hello,
I've migrated my system to btrfs (raid1) a few months ago. Since then
the performance has been pretty bad, but recently it's gotten
unbearable: a simple sync called while the system is idle can take 20 up
to 60 seconds. Creating or deleting files often has several seconds
latency, too.
One curious - but maybe unrelated - observation is that even though I'm
using a raid1 btrfs setup, the hdds are often being written to
sequentially. One hard-drive sees some write activity and after it
subsides, the other drive sees some activity. (See attached
sequential-writes.txt.)
Can you do sysrq+w while this is happening so we can see who is doing
the writing? Thanks,
Josef
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
