Subject: Re: [PATCH] powerpc: Set a smaller value for RECLAIM_DISTANCE to enable zone reclaim

From: Anton Blanchard <[email-masked]>
Date: Tue, 23 Feb 2010 12:38:38 +1100

Hi Balbir,

> A reclaim distance of 10 implies a ratio of 1, that means we'll always
> do zone_reclaim() to free page cache and slab cache before moving on
> to another node?

I want to make an effort to reclaim local pagecache before ever going
off node. As an example, a completely off node stream result is almost 3x
slower than on node on my test box.

Anton