From mboxrd@z Thu Jan 1 00:00:00 1970 From: Balbir Singh Subject: [-mm] Make the memory controller more desktop responsive (v2) Date: Fri, 04 Apr 2008 18:51:16 +0530 Message-ID: <20080404132116.5217.14401.sendpatchset@localhost.localdomain> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Andrew Morton Cc: YAMAMOTO Takashi , Paul Menage , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Pavel Emelianov , Balbir Singh , KAMEZAWA Hiroyuki List-Id: linux-mm.kvack.org Changelog v1 ------------ Move back the retries to 5 (KAMEZAWA) This patch makes the memory controller more responsive on my desktop. Here is what the patch does 1. It sets all cached pages as inactive. We were by default marking all pages as active, thus forcing us to go through two passes for reclaiming pages 2. Removes congestion_wait(), since we already have that logic in do_try_to_free_pages() Comments? Flames? The patch is against 2.6.25-rc8-mm1 Signed-off-by: Balbir Singh --- mm/memcontrol.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff -puN mm/memcontrol.c~memory-controller-improve-responsiveness mm/memcontrol.c --- linux-2.6.25-rc8/mm/memcontrol.c~memory-controller-improve-responsiveness 2008-04-04 18:29:57.000000000 +0530 +++ linux-2.6.25-rc8-balbir/mm/memcontrol.c 2008-04-04 18:30:08.000000000 +0530 @@ -604,7 +604,6 @@ retry: mem_cgroup_out_of_memory(mem, gfp_mask); goto out; } - congestion_wait(WRITE, HZ/10); } pc->ref_cnt = 1; @@ -612,7 +611,7 @@ retry: pc->page = page; pc->flags = PAGE_CGROUP_FLAG_ACTIVE; if (ctype == MEM_CGROUP_CHARGE_TYPE_CACHE) - pc->flags |= PAGE_CGROUP_FLAG_CACHE; + pc->flags = PAGE_CGROUP_FLAG_CACHE; lock_page_cgroup(page); if (page_get_page_cgroup(page)) { _ -- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL