[Bug 710319] [NEW] CPU usage is incorrect on server-status page

[tinodj]

Public bug reported:

Binary package hint: apache2

1. lsb_release -rd
Description:    Ubuntu 10.04.1 LTS
Release:        10.04

2. Version of package: 2.2.14

3. I do expect CPU Usage and CPU Load to be correct in server-status
page in apache2.

4. What happened instead? - See below:

CPU usage in apache2 server-status page is incorrect, and it's value is
also decreasing sometimes.

Following statuses were obtained in 5seconds interval:

Server Version: Apache/2.2.14 (Ubuntu) DAV/2 SVN/1.6.6 PHP/5.3.2-1ubuntu4.7 with Suhosin-Patch mod_ssl/2.2.14 OpenSSL/0.9.8k
Server Built: Nov 18 2010 21:19:09

Current Time: Sunday, 30-Jan-2011 21:06:49 CET
Restart Time: Sunday, 30-Jan-2011 19:27:27 CET
Parent Server Generation: 0
Server uptime: 1 hour 39 minutes 22 seconds
Total accesses: 349255 - Total Traffic: 5.9 GB
CPU Usage: u388.82 s69.29 cu5.11 cs0 - 7.77% CPU load
58.6 requests/sec - 1.0 MB/second - 17.6 kB/request
141 requests currently being processed, 12 idle workers 

Server Version: Apache/2.2.14 (Ubuntu) DAV/2 SVN/1.6.6 PHP/5.3.2-1ubuntu4.7 with Suhosin-Patch mod_ssl/2.2.14 OpenSSL/0.9.8k
Server Built: Nov 18 2010 21:19:09

Current Time: Sunday, 30-Jan-2011 21:06:54 CET
Restart Time: Sunday, 30-Jan-2011 19:27:27 CET
Parent Server Generation: 0
Server uptime: 1 hour 39 minutes 27 seconds
Total accesses: 349480 - Total Traffic: 5.9 GB
CPU Usage: u384.43 s67.96 cu5.1 cs0 - 7.67% CPU load
58.6 requests/sec - 1.0 MB/second - 17.6 kB/request
125 requests currently being processed, 32 idle workers 

CPU Usage in second status is smaller then in the first (obtained
5seconds earlier) (384.43 vs 388.2).

This leads to incorrect CPU load and so on.

** Affects: apache2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apache2 cpuload cpuusage server-status

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https://bugs.launchpad.net/bugs/710319

Title:
  CPU usage is incorrect on server-status page