Re: oom-killer why ?

Larry Woodman
2008-08-26T19:09:48Z

On Tue, 2008-08-26 at 18:48 +0530, Balbir Singh wrote:
> Balbir Singh wrote:
>
> Looking closely, may be there is a leak like Christoph suggested (most of the
> pages have been consumed by the kernel) - only 280kB+244kB is in use by user
> pages. The rest has either leaked or in use by the kernel.
>

There is no leak. Between the ptepages(pagetables:152485), the
memmap(4456448 pages of RAM * 32bytes = 34816 pages) and the
slabcache(slab:35543) you can account for ~99% of the Normal zone and
its wired. You simply cant run a large database without hugepages and
without CONFIG_HIGHPTE set and not exhaust Lowmem on a 16GB x86 system.