[CentOS] 3Ware 9550SX and latency/system responsiveness
centos at web.org.uk
Mon Sep 24 08:02:11 UTC 2007
At 07:46 +0800 24/9/07, Feizhou wrote:
>>... plus an Out of Memory kill of sshd. Second time around (logged
>>in on the console rather than over ssh), it's just the same except
>>it's hald that happens to get clobbered instead.
>Are you saying that running in RAID0 mode with this card and
>motherboard combination, you get a memory leak? Who is the culprit?
I don't know if it's caused by a memory leak or something else, I'm
just describing what happens. I would be tempted to suspect the RAM
itself if another identical machine didn't have exactly the same
>>what's left to try?
I've reported the issue to 3ware but they've not responded. I
replicated the problem with RHEL AS 4 update 5 and contacted RedHat
but they told me evaluation subscriptions aren't supported.
>>I see there's a new firmware version out today (3ware codeset
>>220.127.116.11... I guess I'll update it and push the whole thing back up
>>the hill for another go.
>I hope that fixes things for you.
Maybe I'm thinking about this all wrong - maybe this responsiveness
issue won't even arise during normal operation, perhaps it's just a
symptom of intensive benchmarking when all the resources of the
machine are devoted to throwing data at the card/disks as fast as
possible. I'm now way out of my depth, frankly.
I'm going to try the latest firmware upgrade, followed by RHEL/CentOS
5, and finally see if I can replicate with a different card (Areca or
Thanks for all the feedback, at least I feel as if I've tried every
conceivable obvious thing.
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