Difference between revisions of "The number of processes seems to be wrong in VE"
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The thing is that <tt>ps aux</tt> command outputs only "full-fledged" processes, but not threads. And `vzlist` command counts all processes in [[VE]] including threads. <tt>ps -eLf</tt> command allows you to see all processes: | The thing is that <tt>ps aux</tt> command outputs only "full-fledged" processes, but not threads. And `vzlist` command counts all processes in [[VE]] including threads. <tt>ps -eLf</tt> command allows you to see all processes: | ||
<pre> | <pre> | ||
| − | [root@HN ~] # vzctl exec 1001 ps | + | [root@HN ~] # vzctl exec 1001 ps -elf | wc -l |
65 | 65 | ||
| − | [root@HN ~] # vzctl exec 1002 ps | + | [root@HN ~] # vzctl exec 1002 ps -elf | wc -l |
14 | 14 | ||
| − | [root@HN ~] # vzctl exec 1003 ps | + | [root@HN ~] # vzctl exec 1003 ps -elf | wc -l |
26 | 26 | ||
</pre> | </pre> | ||
Revision as of 09:33, 15 May 2007
Problem
Quite a few people complain at the forum that vzlist command outputs wrong proccess number (e.g. http://forum.openvz.org/index.php?t=tree&goto=12664&#msg_12664). Look:
[root@HN ~] # vzlist VPSID NPROC STATUS IP_ADDR HOSTNAME 1001 63 running xx.yy.136.88 promo.HN.com 1002 12 running xx.yy.138.6 video.HN.com 1003 24 running xx.yy.136.86 db.HN.com [root@HN ~] # vzctl exec 1001 ps aux | wc -l 13 [root@HN ~] # vzctl exec 1002 ps aux | wc -l 14 [root@HN ~] # vzctl exec 1003 ps aux | wc -l 17
As you see, the number is false for VE 1001 and 1003, but is correct for VE 1002 (14 = 12 + 1 (wc command) + 1 (ps command)).
Disclosure
The thing is that ps aux command outputs only "full-fledged" processes, but not threads. And `vzlist` command counts all processes in VE including threads. ps -eLf command allows you to see all processes:
[root@HN ~] # vzctl exec 1001 ps -elf | wc -l 65 [root@HN ~] # vzctl exec 1002 ps -elf | wc -l 14 [root@HN ~] # vzctl exec 1003 ps -elf | wc -l 26
Now the outputs suite each other.
