Bug 170083 - Top showing bad cpu usage numbers
Top showing bad cpu usage numbers
Product: Fedora
Classification: Fedora
Component: procps (Show other bugs)
x86_64 Linux
medium Severity medium
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Assigned To: Karel Zak
Brian Brock
Depends On:
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Reported: 2005-10-06 21:56 EDT by Brian Gerst
Modified: 2007-11-30 17:11 EST (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2005-10-12 08:51:24 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Brian Gerst 2005-10-06 21:56:43 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8b4) Gecko/20050915 Fedora/1.5-0.5.0.beta1 Firefox/1.4

Description of problem:
The cpu time summary line is showing incorrect numbers.  According to /proc/stat, iowait is not increasing yet top shows ~3% wait.

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

How reproducible:

Steps to Reproduce:
Run top

Actual Results:  Cpu(s):  3.7% us,  0.8% sy,  0.0% ni, 91.4% id,  3.3% wa,  0.0% hi,  0.6% si

Expected Results:  Cpu(s):  0.7% us,  0.3% sy,  0.0% ni, 99.0% id,  0.0% wa,  0.0% hi,  0.0% si

Additional info:

Removing procps-3.2.5.remcpu.patch fixes the problem.
Comment 1 Karel Zak 2005-10-11 13:30:53 EDT
Do you have single CPU or SMP box?
Comment 2 Brian Gerst 2005-10-11 13:39:12 EDT
Single cpu.
Comment 3 Karel Zak 2005-10-12 08:51:24 EDT
Fixed. Update to procps-3.2.5-8.

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