Ross Walker wrote, On 42-12-23 02:59 PM:
[storage-discuss] Sol 10u7 iscsitgt write performance
Ok, I have just about given up
on this one, and I was so hopeful after
having figured out the read performance issue
(which to recap was a
mix of ESX guest network latency and a randomizing of the data file
from running random write and sequential read tests back to back).
Now it seems I am up against the hardware and ZIL on this one.
To make it short, 4k sequential writes, throughput 16MB/s...
Local tests show hardware is capable of at least 132MB/s (3 raidz
groups of 4 disks each, those are 15K SAS disks).
I believe the network is tuned optimally, Nagle on Windows disabled.
The ZIL is going to a 16GB Mtron SSD, 100us sequential access time.
Any more suggestions or pointers to improve things are warmly welcomed.
-Ross
Hi Ross,
Can you give me more details about your ssd?
I'm looking for SSD to test it. Is yours expensive? Fast?
Did you check it with dd command and iostat?
Thanks,
Roman
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