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 issue. >>what's left to try? > >Bug report... 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 LSI, perhaps). Thanks for all the feedback, at least I feel as if I've tried every conceivable obvious thing. S.