On Wed, 4 Aug 2010, Eduardo Bragatto wrote:
Checking with iostat, I noticed the average wait time to be between 40ms and
50ms for all disks. Which doesn't seem too bad.
Actually, this is quite high. I would not expect such long wait times
except for when under extreme load such as a benchmark. If the wait
times are this long under normal use, then there is something wrong.
However I did have CPU spikes at 100% where the kernel was taking all cpu
time.
I have reduced my zfs_arc_max parameter as it seemed the applications were
struggling for RAM and things are looking better now
Odd. What type of applications are you running on this system? Are
applications running on the server competing with client accesses?
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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