Justin Pryzby <justinp@xxxxxxxxxxxxxx> writes: > When we upgraded from linux-2.6.24 to linux-2.6.27, our pg_dump > duration increased by 20% from 5 hours to 6. Wouldn't be the first time the kernel guys broke something :-( I think a complaint to your kernel supplier is in order. In a coincidence, the first item in the changelog for this week's Fedora kernel update is: * Fri Sep 25 2009 Chuck Ebbert <cebbert@xxxxxxxxxx> 2.6.30.8-64 - Fix serious CFQ performance regression. This is surely not the exact same issue you are seeing, but it does illustrate that performance regressions in the kernel aren't unheard-of. regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
