From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Tue, 23 Feb 2010 12:38:38 +1100 From: Anton Blanchard To: Balbir Singh Subject: Re: [PATCH] powerpc: Set a smaller value for RECLAIM_DISTANCE to enable zone reclaim Message-ID: <20100223013838.GF31681@kryten> References: <20100218222923.GC31681@kryten> <661de9471002190743t5385d97hf38c544f0007879c@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <661de9471002190743t5385d97hf38c544f0007879c@mail.gmail.com> Cc: mel@csn.ul.ie, cl@linux-foundation.org, linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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