On Nov 19, 2009, at 10:28 AM, Dushyanth Harinath wrote:
Thanks a lot. This clears many of the doubts I had.
I was actually trying to improve the performance of our email
storage. We are using dovecot as the LDA on a set of RHEL boxes and
the email volume seems to be saturating the write throughput of our
infortrend iSCSI SAN.
I'm not familiar with dovecot, but I've done 500k users on a system
with just a few FC connections. The mail workload can be very
stressful to storage. Of course, we had plenty of HDDs -- enough
to handle the large IOPS requirement. I'd love to revisit this with
SSDs instead :-)
So it looks like a mail storage server type workload will not
benifit with a ZIL as proven by zilstat and a postmark workload.
Iam guessing Sun 7310/7410 will behave the same way with this type
of workload. Do the logzillas/readzillas do anything special on
these boxes ?
In general, the performance will be limited by the storage devices.
-- richard
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
