From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755585Ab1CHQFU (ORCPT ); Tue, 8 Mar 2011 11:05:20 -0500 Received: from smtp-out.google.com ([74.125.121.67]:50890 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755273Ab1CHQFR (ORCPT ); Tue, 8 Mar 2011 11:05:17 -0500 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=from:to:cc:subject:date:message-id:x-mailer; b=HetKRArhhonjvS2oG2hfMeTXdFuZAMWE5+n/4smRYxz8x5qtvkmpEYdt82AfVR7Wq diOZvq3/czXGbfOn//2EA== From: Justin TerAvest To: vgoyal@redhat.com, jaxboe@fusionio.com Cc: ctalbott@google.com, guijianfeng@cn.fujitsu.com, linux-kernel@vger.kernel.org, Justin TerAvest Subject: [PATCH][resend] blk-cgroup: Lower minimum weight from 100 to 10. Date: Tue, 8 Mar 2011 08:04:51 -0800 Message-Id: <1299600291-30388-1-git-send-email-teravest@google.com> X-Mailer: git-send-email 1.7.3.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We've found that we still get good, useful isolation at weights this low. I'd like to adjust the minimum so that any other changes can take these values into account. Signed-off-by: Justin TerAvest Acked-by: Vivek Goyal --- Documentation/cgroups/blkio-controller.txt | 2 +- block/blk-cgroup.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/cgroups/blkio-controller.txt b/Documentation/cgroups/blkio-controller.txt index 4ed7b5c..24314fd 100644 --- a/Documentation/cgroups/blkio-controller.txt +++ b/Documentation/cgroups/blkio-controller.txt @@ -140,7 +140,7 @@ Proportional weight policy files - Specifies per cgroup weight. This is default weight of the group on all the devices until and unless overridden by per device rule. (See blkio.weight_device). - Currently allowed range of weights is from 100 to 1000. + Currently allowed range of weights is from 10 to 1000. - blkio.weight_device - One can specify per cgroup per device rules using this interface. diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index ea4861b..57e7234 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -240,7 +240,7 @@ static inline char *blkg_path(struct blkio_group *blkg) { return NULL; } #endif -#define BLKIO_WEIGHT_MIN 100 +#define BLKIO_WEIGHT_MIN 10 #define BLKIO_WEIGHT_MAX 1000 #define BLKIO_WEIGHT_DEFAULT 500 -- 1.7.3.1