Hi everyone. I posted this on the OmniOS list as well, but hoping
someone here can help.
We are running our final tests with our servers before we send them
off to the DC. We have tested various ZIL devices, including Zeusram
and DDRdrive. I wanted to get some comments on what we should expect
On Sat, 11 Aug 2012, Chris Nagele wrote:
So far, running gnu dd with 512b and oflag=sync, the most we can get is 8k
iops on the zil device. I even tried with some SSDs (Crucial M4,
If this is one dd program running, then all you are measuring is
sequential IOPS. That is, the next I/O will
This command runs with 16 threads and 8k blocks with a 2GB file:
iozone -m -t 16 -T -O -r 8k -o -s 2G
That's fair, and I realize dd is not an ideal test. I did run multiple
instances of dd as well, only getting to about 8.8k iops. The reality
is that no benchmark is ideal, which is why our
