Bug 429010

Summary: Getting kernel messages "warning: many lost ticks, Your time source seems to be instable or some driver is hogging interupts, rip __do_softirq+0x4d/0xd0, Falling back to HPET"
Product: Red Hat Enterprise Linux 4 Reporter: scott.shigo
Component: kernelAssignee: Red Hat Kernel Manager <kernel-mgr>
Status: CLOSED DUPLICATE QA Contact: Martin Jenner <mjenner>
Severity: medium Docs Contact:
Priority: low    
Version: 4.6CC: awashbro, hoff_wu, jplans, tek-kee.wang
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2008-01-22 11:52:51 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:

Description scott.shigo 2008-01-16 19:18:48 UTC 
From Bugzilla Helper:
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Description of problem:
Getting the following kernel messages about 40-45mins after boot with RHEL AS 4.6 x86_64 on an HP DL580 G5:

kernel: warning: many lost ticks.
kernel: Your time source seems to be instable or some driver is hogging interupts
kernel: rip __do_softirq+0x4d/0xd0
kernel: Falling back to HPET

Also get them with RHEL AS 4.5 x86_64 on an HP DL580 G5, I DO NOT get them on any other HP hdw (like HP DL580 G3, HP BL460c, for instance)

Version-Release number of selected component (if applicable):
kernel-2.6.9-67.0.1.ELsmp, also same problem on kernel-2.6.9-67.ELsmp & kernel-2.6.9-55.ELsmp

How reproducible:
Always


Steps to Reproduce:
1.Install RHEL AS 4.6 x86_64 on an HP DL580 G5
2.after about 40min the kernel messages appear
3.

Actual Results:
Get the following kernel messages in dmesg/var/log/messages:

kernel: warning: many lost ticks.
kernel: Your time source seems to be instable or some driver is hogging interupts
kernel: rip __do_softirq+0x4d/0xd0
kernel: Falling back to HPET


Expected Results:
I should not receive the kernel messages.

Additional info:
RedHat Support (Service request 1796350) asked me to open a new bugzilla for this problem after researching existing related bugs (all AMD processor related, fixed in RHEL AS 4.5 x86_64)
Comment 3 Jose Plans 2008-01-22 11:52:51 UTC 

*** This bug has been marked as a duplicate of 248488 ***
Comment 6 Michal Nowak 2008-06-19 13:09:04 UTC 
http://cvs.devel.redhat.com/cgi-bin/cvsweb.cgi/tests/nss_ldap/nss_ldap/bz429010/
Comment 7 Michal Nowak 2008-06-19 13:12:44 UTC 
(In reply to comment #6)
> http://cvs.devel.redhat.com/cgi-bin/cvsweb.cgi/tests/nss_ldap/nss_ldap/bz429010/

Wrong BZ :).
Comment 8 Wang Tek Kee 2009-01-22 03:03:36 UTC 
Hi, can anyone comment on the status of this bug?