Re: [PATCH 14/14] page-replace-kswapd-incmin.patch

On Fri, Dec 30, 2005 at 11:42:34PM +0100, Peter Zijlstra wrote:
> 
> From: Nick Piggin <[email protected]>
> 
> Explicitly teach kswapd about the incremental min logic instead of just scanning
> all zones under the first low zone. This should keep more even pressure applied
> on the zones.
> 
> The new shrink_zone() logic exposes the very worst side of the current
> balance_pgdat() function. Without this patch reclaim is limited to ZONE_DMA.

Can you please describe the issue with over protection of DMA zone you experienced?

I'll see if I can reproduce it with Nick's standalone patch on top of vanilla, what
load was that?

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