Justin T Pryzby <justinp@xxxxxxxxxxxxxx> wrote: > On Thu, Oct 08, 2009 at 10:49:37AM -0700, Joshua D. Drake wrote: >> Did your scheduler change between the kernel versions? > No, it's deadline for both. How about write barriers? I had a kernel upgrade which turned them on for xfs, with unfortunate performance impacts. The xfs docs explicitly recommend disabling it if you have a battery backed cache in your RAID controller. -Kevin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
