On 03/03/2013 03:16 PM, Josh Berkus wrote: > Steven, > >> We saw the same performance problems when this new hardware was running >> cent 6.3 with a 2.6.32-279.19.1.el6.x86_64 kernel and when it was matched >> to the OS/kernel of the old hardware which was cent 5.8 with >> a 2.6.18-308.11.1.el5 kernel. > > Oh, now that's interesting. We've been seeing the same issue (IO stalls > on COMMIT) ond had attributed it to some bugs in the 3.2 and 3.4 > kernels, partly because we don't have a credible "old server" to test > against. Now you have me wondering if there's not a hardware or driver > issue with a major HW manufacturer which just happens to be hitting > around now. > > Can you detail your hardware stack so that we can compare notes? > > The current Red Hat Enterprise Linux 6.4 kernel is kernel-2.6.32-358.0.1.el6.x86_64
in case that matters. -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
