Re: [PATCH -mm v2 8/8] slab: make dead memcg caches discard free slabs immediately

[Christoph Lameter]

On Thu, 12 Jun 2014, Joonsoo Kim wrote:

> BTW, I have a question about cache_reap(). If there are many kmemcg
> users, we would have a lot of slab caches and just to traverse slab
> cache list could take some times. Is it no problem?

Its a big problem and one of the reasons that SLUB was developed. Cache
reaping caused noticable random delays to processing which was
significantly impacting HPC loads of SGI.


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