Bug 804126

Summary: Kernel 3.2.10-2 brings system to a crawl
Product: [Fedora] Fedora Reporter: Sammy <umar>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: urgent Docs Contact:
Priority: unspecified    
Version: 16CC: gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-07-10 21:50:42 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
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Description Flags
messages for last reboot none

Description Sammy 2012-03-16 15:26:08 UTC 
Hi,

I was testing kernel 3.2.10-2 from koji.

After using the machine for a while one suddenly gets messages saying 
certain irq's are disabled. At the point the system slows down to a crawl.
Restarting X etc does not change anything. Reboot fixes the problem.

It happened all two different machines. Both are DELL T5500's. One with
a quad CPU the other dual six-core cpu's.

I don't  think 3.2.10-1 was doing this.
FYI
Comment 1 Josh Boyer 2012-03-16 16:01:05 UTC 
There was a bad patch included in 3.2.10-2.  Could you try this kernel here:

http://koji.fedoraproject.org/koji/taskinfo?taskID=3898618
Comment 2 Sammy 2012-03-16 17:50:25 UTC 
OK. I am trying so far so good. But the IRQ messages came after a few hours
of working. I am not sure what triggers it to suddenly decide to eliminate
some irq's, but in the past these messages did not effect the system performance.
Comment 3 Josh Boyer 2012-03-16 18:10:55 UTC 
(In reply to comment #2)
> OK. I am trying so far so good. But the IRQ messages came after a few hours
> of working. I am not sure what triggers it to suddenly decide to eliminate
> some irq's, but in the past these messages did not effect the system
> performance.

Can you post the full dmesg from that kernel boot as well?
Comment 4 Sammy 2012-03-16 18:16:46 UTC 
OK. I am trying so far so good. But the IRQ messages came after a few hours
of working. I am not sure what triggers it to suddenly decide to eliminate
some irq's, but in the past these messages did not effect the system performance.
Comment 5 Sammy 2012-03-16 18:18:18 UTC 
Sorry about the repost....I am attaching the segment from the messages file
for the last reboot. I am not getting dmesg files in Fedora 16 anymore but
just boot,log and messages!
Comment 6 Sammy 2012-03-16 18:19:01 UTC 
Created attachment 570674 [details]
messages for last reboot
Comment 7 Sammy 2012-03-18 13:00:38 UTC 
I see that kernel 3.2.10-3 have been pushed to updates. Does this contain
the fix? Thanks
Comment 8 Josh Boyer 2012-03-19 14:42:50 UTC 
(In reply to comment #7)
> I see that kernel 3.2.10-3 have been pushed to updates. Does this contain
> the fix? Thanks

It drops the broken patch that was in 3.2.10-2, so yes 3.2.10-3 should fix the issue you were seeing.  The next kernel update submitted after that will have a fixed version of the patch that is found in the 2.2 kernel you are testing.