Bug 127702 - procps: top Reports CPU Utilization above 100%
procps: top Reports CPU Utilization above 100%
Product: Fedora
Classification: Fedora
Component: procps (Show other bugs)
i686 Linux
medium Severity medium
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Assigned To: Daniel Walsh
Depends On:
  Show dependency treegraph
Reported: 2004-07-12 14:44 EDT by Matt Siemens
Modified: 2007-11-30 17:10 EST (History)
0 users

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-07-20 12:46:51 EDT
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Top showing the problem. (40.49 KB, image/png)
2004-07-12 14:46 EDT, Matt Siemens
no flags Details

  None (edit)
Description Matt Siemens 2004-07-12 14:44:56 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7)
Gecko/20040626 Firefox/0.9.1

Description of problem:
When using top to monitor a system under heavy load (in my case, a
system undergoing stress testing), top will occasionally display an
idle value of 3624114749255314.0% or similar.  See the enclosed
screenshot for details.

2 x 2.4 GHz Xeon CPUs with Hyperthreading enabled
Kernel 2.4.22-1.2194.nptl (SMP)

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

How reproducible:

Steps to Reproduce:
Force your system to use all CPU time, and monitor the system with
top.  Within the first minute you should see the odd reading.
Comment 1 Matt Siemens 2004-07-12 14:46:29 EDT
Created attachment 101821 [details]
Top showing the problem.
Comment 2 Daniel Walsh 2004-07-20 11:24:09 EDT
Does procps-3.2.2-1 still show this behaviour?
Comment 3 Matt Siemens 2004-07-20 11:45:42 EDT
Where can I find a copy of procps-3.2.2-1 for FC1?
Comment 5 Matt Siemens 2004-07-20 12:45:34 EDT
I compiled and installed procps-3.2.2-1 for FC1, and ran the same
stress tests as before.  I wasn't able to reproduce the problem found
in the older version of top. It looks like this newer version of
procps fixes the bug in top.

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