Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753425Ab0FSAbG (ORCPT ); Fri, 18 Jun 2010 20:31:06 -0400 Received: from smtp-out.google.com ([74.125.121.35]:2783 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751165Ab0FSAbE (ORCPT ); Fri, 18 Jun 2010 20:31:04 -0400 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=mMuDJhckpPnhC7OBwiLMfjRWX5rPXauMAWfpy1zTTGw3O0x2CyJUFmqLF59pARbNM RotBJRJYeMIGQrfIBdaBw== From: Michael Rubin To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Cc: jack@suse.cz, akpm@linux-foundation.org, david@fromorbit.com, hch@lst.de, axboe@kernel.dk, Michael Rubin Subject: [PATCH 0/3] writeback visibility Date: Fri, 18 Jun 2010 17:30:12 -0700 Message-Id: <1276907415-504-1-git-send-email-mrubin@google.com> X-Mailer: git-send-email 1.7.0.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1629 Lines: 35 Debugging writeback issues and tuning an application's writeback activity is easier when the activity is visible. With large clusters, classifying and root causing writeback problems has been a big headache. This patch series contains a series of patches that our team has been using to start getting a handle on writeback behaviour. These changes should be helpful for single system maintainers also. It's still a big headache. Once these changes are reviewed I will make sure the Documentation files are updated, but I expect some back and forth first. Michael Rubin (3): writeback: Creating /sys/kernel/mm/writeback/writeback writeback: per bdi monitoring writeback: tracking subsystems causing writeback drivers/base/node.c | 14 +++++ fs/buffer.c | 2 +- fs/fs-writeback.c | 28 +++++++-- fs/nilfs2/segment.c | 4 +- fs/sync.c | 2 +- include/linux/backing-dev.h | 9 +++ include/linux/mmzone.h | 2 + include/linux/writeback.h | 50 +++++++++++++++- mm/backing-dev.c | 137 ++++++++++++++++++++++--------------------- mm/mm_init.c | 122 ++++++++++++++++++++++++++++++++++++++ mm/page-writeback.c | 18 ++++-- mm/vmscan.c | 3 +- mm/vmstat.c | 2 + 13 files changed, 311 insertions(+), 82 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/