From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Cundiff Subject: Performance degradation Date: Mon, 20 Sep 2010 17:24:58 -0400 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 To: linux-btrfs@vger.kernel.org Return-path: List-ID: Hi, I have a btrfs backup system that has been running great. Its been backing up 6 systems with 500-750 gigs of data using Rsync and snapshots. Every night I snapshot the backup and overwrite it. Recently it has been unable to complete the backups. Its running soooo slow that it can barely finish 1 backup a day. When I first started backing up the systems they would all complete in at the most 8 hours. I noticed it started happening after I deleted a large number of snapshots. This caused the cleaner process to run for a few days. After it finished the filesystem has still been to slow to use. I'm running kernel 2.6.36-rc4. Filesystem was built with -m single -d single and using the compress mount option. Block device is an Areca RAID5 with 4 Western Digital 2TB drives. -- Dave Cundiff System Administrator A2Hosting, Inc http://www.a2hosting.com