[ZBX-3760] CPU idle reported as 0% on idle systems Created: 2011 Apr 27  Updated: 2017 May 30  Resolved: 2011 May 11

Status: Closed
Project: ZABBIX BUGS AND ISSUES
Component/s: Agent (G)
Affects Version/s: 1.8.5
Fix Version/s: 1.8.6

Type: Incident report Priority: Minor
Reporter: David Stark Assignee: Unassigned
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

Solaris 10/Sparc

Issue Links:
Duplicate

 Description   

With the 1.8.5 Zabbix agent, some of our hosts show 0% idle CPU on Zabbix while vmstat and top report >0% idle.
Downgrading to the 1.8.4 agent makes the problem go away.

This only seems to be a problem on hosts with non-contiguous CPU IDs, e.g.:

OK:
—
$ psrinfo
0 on-line since 12/01/2009 19:19:52
1 on-line since 12/01/2009 19:19:50
—

Not OK:
—
$ psrinfo
0 on-line since 03/19/2011 15:50:14
1 on-line since 03/19/2011 15:50:14
2 on-line since 03/19/2011 15:50:14
3 on-line since 03/19/2011 15:50:11
16 on-line since 03/19/2011 15:50:14
17 on-line since 03/19/2011 15:50:14
18 on-line since 03/19/2011 15:50:14
19 on-line since 03/19/2011 15:50:14
—

 Comments   
Comment by richlv [ 2011 Apr 29 ]

1.8.5 had ZBX-3453 (improve performance of cpu collector) - if actual bug, maybe related

Comment by Alexander Vladishev [ 2011 May 06 ]

Fixed in the development branch svn://svn.zabbix.com/branches/dev/ZBX-3760

Comment by David Stark [ 2011 May 10 ]

SVN version ZBX-3760 seems to work fine.

Comment by Alexander Vladishev [ 2011 May 10 ]

Thank you! Today this fix will be merged with the branch 1.8.

Comment by Alexander Vladishev [ 2011 May 11 ]

Fixed in version pre1.8.6, r19499.

Comment by richlv [ 2011 Aug 12 ]

ZBX-4043 seems to be similar

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