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SubjectRe: OOPS (kswapd) in 2.4.5 and 2.4.6
On Thu, 05 Jul 2001, Wayne Whitney wrote:
> In mailing-lists.linux-kernel, you wrote:
> > We've noticed the following kernel error since 2.4 (2.4.1-2.4.6).
> > It appears to be swap (kswapd thread specific?) related. The same
> > error is reported on several SMP machines after only a short period
> > (an hour or less).
> FYI, I see a similar problem under 2.4.5, also SMP, although only
> intermittently. Two oopses are below, from two different, although
> similarly configured, machines.


Sounds very similar. Our servers are all identical (except for RAM).

What's unusual is that the machines we *expect* to fail sooner - don't
(not even an oops). Those are very busy cache servers (several of them
in a sibling cluster) which do a lot of swapping. The machines which
*do* fail (or oops without any further catastrophe) are typically
web/mail hosting servers (reasonably busy with about 25% swap being
used). Increasing swap did not help on 2.4.5. We're still waiting for
something to happen on 2.4.6 (ie, oops already appeared - waiting for
meltdown, which, hopefully, will not occur). We used to auto-reboot
every morning at 2am or something to keep things stable - which I
*hate* because I remember having a 2.0.35/6 workstation that had an
uptime of 6 months a couple of years ago. God, I loved that box.

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