Re: More vm benchmarking

Nick Piggin
2004-02-26T01:35:43Z

Andrew Morton wrote:

>Nick Piggin <piggin@cyberone.com.au> wrote:
>
>>You would
>>expect ZONE_NORMAL to have more pages reclaimed from it
>>because there should be more pressure on it.
>>
>
>Why?
>
>The only things which should be special about ZONE_NORMAL which I can think
>of are:
>
>a) All the early-allocated pinned memory is sitting there and
>
>b) If you start an app which uses a lot of memory, its text pages will
> probabyl be in ZONE_NORMAL while ZONE_DMA will contain just bss and
> pagecache.
>

Maybe. If you're doing a heavy swapping kbuild, stuff will
be pretty randomly placed. And ZONE_NORMAL will just get
more pressure due to trying to allocate from there first.