Date: Wed, 29 Dec 2004 19:06:45 +0900 From: Rob <spamrefuse@yahoo.com> To: FreeBSD <freebsd-questions@freebsd.org> Subject: Re: 5.3 in diskless cluster: irregular reboots at 14:09 hr. ?!?! Message-ID: <41D281B5.3050107@yahoo.com> In-Reply-To: <Pine.NEB.4.61.9.0412291012130.6312@kenmore.kozy-kabin.nl> References: <41D27378.7010103@yahoo.com> <Pine.NEB.4.61.9.0412291012130.6312@kenmore.kozy-kabin.nl>
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Colin J. Raven wrote: > On Dec 29, Rob launched this into the bitstream: > >> >> I'm running 5.3-Stable on all PC's. >> >> I have a master/router with 7 diskless slaves. One of the >> slaves shows irregular reboots, without a trace, not even >> a shutdown message in the logs. >> >> Until now I have the following sudden reboots of one particular >> slave happen: >> Nov. 16 14:09:41 >> Nov. 30 14:09:23 >> Dec. 28 14:09:34 >> >> Each is exactly at the same time; this is rather peculiar, isn't it? >> >> Any idea what's going on here, or how to trace this problem? > > > What *else* is happening at (or immediately before) 14:09 on this > machine?? For example is something rather intense occurring immediately > beforehand? I'm thinking power supply failure when it get's loaded > beyond a certain point...so, pursuant to that is there maybe a big log > grep happening beforehand, or some other event that stresses components, > thus consuming more power? Thank you Colin. What would be a good command to run, to find out how stressful the PC is right before the reboot? Is 'top' good enough? Or is there something better? 'ps auxw' for example? Since I don't know on what date it happens a next time, I will start a cron job each day at 14:08 to check how stressful the PC is. It will output the result of the job to disk. > It has that funny; "I'll bet the PSU is on the way out" feeling to it, > but actually proving that can be tedious. I may also swap UPS between two slaves and see if the reboots are related to a shaky UPS. I don't want to replace the PSU yet :(. Rob.
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