Bug 503077 - [rhts] ia64: hvm guests cause large amounts of soft lockup warnings
[rhts] ia64: hvm guests cause large amounts of soft lockup warnings
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel-xen (Show other bugs)
All Linux
low Severity medium
: rc
: ---
Assigned To: Rik van Riel
Red Hat Kernel QE team
Depends On:
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Reported: 2009-05-28 14:17 EDT by Don Zickus
Modified: 2009-07-09 10:28 EDT (History)
4 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2009-07-09 10:28:41 EDT
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Regression: ---
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RHEL 7.3 requirements from Atomic Host:
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Description Don Zickus 2009-05-28 14:17:44 EDT
Description of problem:
  When running our kernel tier 1 tests, we are noticing large amounts of
soft lockup warnings to the point our tests timeout and fail.  Only recently
we have noticed more and more of these failures.

Some examples are:

Checking dmesg for specific failures!
BUG: soft lockup - CPU#1 stuck for 10s! [rhts-submit-log:32765]
BUG: soft lockup - CPU#1 stuck for 10s! [avahi-daemon:2233]
BUG: soft lockup - CPU#1 stuck for 10s! [events/1:9]
BUG: soft lockup - CPU#0 stuck for 10s! [kjournald:379]
End of log.

The following links show the failures for kernel-2.6.18-151.el5

Look through my testsuite history, kernel-2.6.18-146.el5 seemed to have
expected problems of only rpciod soft lockups (which has been normal for a
while), kernel-2.6.18-147.el5 failed to installed, kernel-2.6.18-148.el5 had
numerous softlockup failures which were _not_ expected.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. run a kernel tier1 testsuite and notice how only hvm guests have issues

Actual results:

Expected results:

Additional info:
Comment 2 Chris Lalancette 2009-07-09 08:20:59 EDT
Is this still a problem, or have these messages gone away?  I seem to remember some changed in 5.4 that fixed this particular problem, but my memory is fuzzy.  DonZ?

Chris Lalancette
Comment 3 Don Zickus 2009-07-09 09:05:07 EDT
Things have quieted down recently and I have not seen the volume of softlockups as I did in the past.  

So if you want to close this as fixed in CURRENTRELEASE or something, I am ok with that.  If that problem pops up again, I know where to find you. :-)
Comment 4 Chris Lalancette 2009-07-09 10:28:41 EDT
Haha.  OK, will do, and as always, feel free to open another bug :).

Chris Lalancette

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