Re: oom-killer why ?

Balbir Singh
2008-08-27T02:33:04Z

Larry Woodman wrote:
> 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.

Thanks for looking at it more closely, Yes, we do need to have CONFIG_HIGHPTE
enabled.

--
Balbir