Re: Out of Memory: Killed process 16498 (java).

[Dan Aloni]

On Thu, Jan 19, 2006 at 05:49:20PM -0800, Andrew Morton wrote:
> Dave Jones <davej@xxxxxxxxxx> wrote:
> >
> > The Fedora user in the bug report
> > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=175173
> > who on x86-64 with 5GB saw zone_dma exhausted saw a similar result,
> > delays the kill, but it does still happen.
> 
> Again, that person's ZONE_DMA has *zero* pages on the LRU.  Something has
> consumed all of the piddling little zone for kernel data structures.  It is
> a true oom.
> 
> We need to work out who is using all this ZONE_DMA memory and make them
> stop it.

It reminds me, we had a similar problem in the 2.4.x kernel with 
many SCSI hosts loaded - that caused scsi_malloc (which uses DMA) 
to consume a lot of DMA memory and trigger the OOM. I know that code 
was much rewritten for 2.6.x, through DMA allocations in the SCSI 
subsystem (regardless of drivers) still exist here and there.

-- 
Dan Aloni
da-x@xxxxxxxxxxxxx, da-x@xxxxxxxxxxx, da-x@xxxxxxx, dan@xxxxxxxxx
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/