On Wed, Apr 4, 2012 at 1:55 PM, Scott Marlowe <scott.marlowe@xxxxxxxxx> wrote: > On Wed, Apr 4, 2012 at 12:46 PM, Cesar Martin <cmartinp@xxxxxxxxx> wrote: >> Raid controller issue or driver problem was the first problem that I >> studied. >> I installed Centos 5.4 al the beginning, but I had performance problems, and >> I contacted Dell support... but Centos is not support by Dell... Then I >> installed Redhat 6 and we contact Dell with same problem. >> Dell say that all is right and that this is a software problem. >> I have installed Centos 5.4, 6.2 and Redhat 6 with similar result, I think >> that not is driver problem (megasas-raid kernel module). >> I will check kernel updates... >> Thanks! > > Look for firmware updates to your RAID card. allready checked that: look here: http://www.dell.com/support/drivers/us/en/04/DriverDetails?DriverId=R269683&FileId=2731095787&DriverName=Dell%20PERC%20H800%20Adapter%2C%20v.12.3.0-0032%2C%20A02&urlProductCode=False latest update is july 2010. i've been down this road with dell many times and I would advise RMAing the whole server -- that will at least get their attention. dell performance/software support is worthless and it's a crying shame blowing 10 grand on a server only to have it underperform your 3 year old workhorse. merlin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance