Bug 14531 - [2.4.x regression] In kernel 2.6.x you cannot see the real CPU usage during IO operations
Summary: [2.4.x regression] In kernel 2.6.x you cannot see the real CPU usage during I...
Status: RESOLVED INVALID
Alias: None
Product: Process Management
Classification: Unclassified
Component: Scheduler (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: Ingo Molnar
URL:
Keywords:
Depends on:
Blocks: 14648
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Reported: 2009-11-02 07:47 UTC by Artem S. Tashkinov
Modified: 2010-05-27 19:24 UTC (History)
0 users

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Regression: Yes
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Description Artem S. Tashkinov 2009-11-02 07:47:28 UTC 
Whenever a process is reading or writing data to the storage media, CPU usage is always 100% (with 0% CPU idle) and it's not clear how much CPU time IO operations require and how much CPU time is left for running applications.

It's absolutely inconvenient and needs to be fixed.

If this bug is due to architecture, then architecture needs to be changed/fixed/improved/etc. - no other modern OS has this problem.
Comment 1 Artem S. Tashkinov 2010-05-27 19:24:15 UTC 
Gnome System Monitor doesn't have this problem, closing.
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