Anyone use RHEL4 with Quad core Xeons (PE 1950)?

[Duncan Hill]

On Thu, March 1, 2007 14:43, Colvin, Joshua wrote:
> Thanks Jeremy. I see Intel used RHEL3 u3 in their performance benchmarks
> for
>
> the quad cores, so I don't have any reason to suspect problems. Thanks for
> the

$dayjob has a 1950 with twin quad-cores, and we've run into a bit of a
pain in the rear with them (that might be solved by firmware, but the box
is deployed in a hosting centre, and isn't readily available for
downtime).  It's an 8 GB unit, and if we thrash the disks (and memory)
hard enough, we can get it to lock up, requiring an IPMI command to reboot
it.  Research on the net muttered about the following:
vm.lower_zone_protection = 150
vm.min_free_kbytes = 10240

OS is CentOS 4.4.  RAID is done with Linux software RAID due to the wrong
PERC being ordered *twitch*.