datamgr page allocation failure

[Matt Domsch]

On Tue, Jun 09, 2009 at 10:44:54AM -0400, Rich Bishop wrote:
> We have a number of m905 blades which have been working fine for about 9 months
> now. We use Dell's omreport to monitor them via nagios. The machines are running
> RHEL4 64bit with the latest version of omsa (5.5).
> 
> Over the weekend our DBAs upgraded Oracle on some of these blades to 10.2.0.4
> (from some older version of Oracle 10). Since this upgrade I'm seeing lots of
> page allocation failures datamgr3:
> 
> Jun  8 08:29:27 bluebird kernel: dsm_sa_datamgr3: page allocation failure. order:4, mode:0xd1

An order 4 allocation means the driver is trying to allocate 2^4 (16)
consecutive pages of RAM (thus 64KB) for an operation, but the kernel
memory is fragmented ot the point where that many consecutive pages
are not available.

Was there a kernel change during the Oracle upgrade?

-- 
Matt Domsch
Technology Strategist, Dell Office of the CTO
linux.dell.com & www.dell.com/linux