On Thu, 24 Jul 2008, Tharindu Rukshan Bamunuarachchi wrote:
We do not use raidz*. Virtually, no raid or stripe through OS.
We have 4 disk RAID1 volumes. RAID1 was created from CAM on 2540.
What ZFS block size are you using?
Are you using synchronous writes for each 700byte message? 10k
synchronous writes per second is pretty high and would depend heavily
on the 2540's write cache and how the 2540's firmware behaves.
You will find some cache tweaks for the 2540 in my writeup available
at
http://www.simplesystems.org/users/bfriesen/zfs-discuss/2540-zfs-performance.pdf.
Without these tweaks, the 2540 waits for the data to be written to
disk rather than written to its NVRAM whenever ZFS flushes the write
cache.
Bob
======================================
Bob Friesenhahn
[EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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