Description of problem: IPMI kernel thread for polling calls udelay(1) to slow down its poll rate, rather than schedule(). This was fixed upstream on 2006-06-06 but it wasn't clear it needed to be fixed in RHEL4. http://marc.theaimsgroup.com/?l=linux-mm-commits&m=115135250417249&w=2 Since then we've started getting customer complaints about poor system performance when running OMSA, which is somewhat alleviated (as best as can be donw given the hardware design) with this patch. It's a 1-liner, s/udelay(1)/schedule()/. This thread has more discussion of the patch. http://marc.theaimsgroup.com/?l=linux-kernel&m=115135250429344&w=2 Please apply to the kernel at your earliest convenience. I'll be rolling this into the OpenManage 5.2 release currently scheduled for ~Q1FY2007. Version-Release number of selected component (if applicable): RHEL4 < Update 5
File uploaded: kernel-smp-2.6.9-42.8.EL.IT101294.test.i686.rpm This event sent from IssueTracker by sbenjamin issue 101294 it_file 69341
Ok have them try this test kernel out with the patch they provided to make sure it works. Once they've confirmed it works I will pass it along. Internal Status set to 'Waiting on Support' This event sent from IssueTracker by sbenjamin issue 101294
Test Kernel(kernel-smp-2.6.9-42.8.EL.IT101294.test.i686.rpm) works fine. Issue is not reproducible with the test kernel.
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
Please add this to the code as soon as we start doing work for 4.5. Thanks.
committed in stream U5 build 42.31. A test kernel with this patch is available from http://people.redhat.com/~jbaron/rhel4/
Issue is not reproducible with test kernel(kernel-2.6.9-42.32.EL).
A fix for this issue has been included in RHEL4.5. Please test the Release Candidate of RHEL4.5, which was released today to Partners, and let us know if the problem is resolved. The Release Candidate can be downloaded from here: ftp://partners.redhat.com/af38ac4316ba20df2dec5f990913396d Internal Status set to 'Waiting on Customer' Status set to: Waiting on Client Resolution set to: 'RHEL 4.5' This event sent from IssueTracker by gcase issue 101294
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2007-0304.html