On Wed, 27 Sep 2006 16:54:35 -0400
Dave Jones <[email protected]> wrote:
> So I have two boxes that are very similar.
> Both have 2GB of RAM & 1GB of swap space.
> One has a 2.8GHz CPU, the other a 2.93GHz CPU, both dualcore.
>
> The slower box survives a 'make -j bzImage' of a 2.6.18 kernel tree
> without incident. (Although it takes ~4 minutes longer than a -j2)
>
> The faster box goes absolutely nuts, oomkilling everything in sight,
> until eventually after about 10 minutes, the box locks up dead,
> and won't even respond to pings.
>
> Oh, the only other difference - the slower box has 1 disk, whereas the
> faster box has two in RAID0. I'm not surprised that stuff is getting
> oom-killed given the pathological scenario, but the fact that the
> box never recovered at all is a little odd. Does md lack some means
> of dealing with low memory scenarios ?
Are you sure it isn't a memory leak?
Suggest you kill things just before it locks up, have a look at
/proc/meminfo, /proc/slabinfo, sysrq-M, echo 3>/proc/sys/vm/drop_caches,
etc.
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