Messages in this thread |  | | | From | Johannes Weiner <> | | Subject | Re: quicklists confuse meminfo | | Date | Sun, 09 Mar 2008 13:03:29 +0100 | |
Hi,
Ingo Molnar <mingo@elte.hu> writes:
> hm. I think we should not let this much RAM hang around in a
> special-purpose allocator like quicklists. Shouldnt the quicklists be
> temporary in nature, and be trimmed much more agressively?
>
> in fact, we have a check_pgt_cache() call in cpu_idle(), which does:
>
> quicklist_trim(0, pgd_dtor, 25, 16);
>
> but it appears we dont do quicklist trimming anywhere else! So if a
> system has no idle time, the quicklist can grow unbounded, and that's a
> real memory leak IMO.
It is also called from tlbu_finish_mmu().
Hannes
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