On Mon, 2010-10-11 at 10:50 -0700, Josh Berkus wrote: > > There's a number of blog tests floating around comparing XFS and Ext3, > > and the various Linux schedulers, for PGDATA or for an all-in-one mount. > > > > However, the WAL has a rather particular write pattern, and it's > > reasonable to assume that it shouldn't be optimized the same way as > > PGDATA. Has anyone done any head-to-heads for WAL drive configuration > > changes? > > That would be a "no", then. Looks like I have my work cut out for me ... The only thing I have done is: http://www.commandprompt.com/blogs/joshua_drake/2008/04/is_that_performance_i_smell_ext2_vs_ext3_on_50_spindles_testing_for_postgresql/ It doesn't cover XFS but it provides a decent and simple comparison on ext2/ext3 etc... Remember xlog is sequential so pushing it off is useful. JD > > -- > -- Josh Berkus > PostgreSQL Experts Inc. > http://www.pgexperts.com > -- PostgreSQL.org Major Contributor Command Prompt, Inc: http://www.commandprompt.com/ - 509.416.6579 Consulting, Training, Support, Custom Development, Engineering http://twitter.com/cmdpromptinc | http://identi.ca/commandprompt -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
