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From "Vladimir Ostrovsky (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-188) CloudStack reports incorrect CPU & RAM usage values for hosts in Basic zone
Date Sat, 22 Sep 2012 12:55:07 GMT
Vladimir Ostrovsky created CLOUDSTACK-188:
---------------------------------------------

             Summary: CloudStack reports incorrect CPU & RAM usage values for hosts in
Basic zone
                 Key: CLOUDSTACK-188
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-188
             Project: CloudStack
          Issue Type: Bug
          Components: Management Server, Usage, XenServer
    Affects Versions: pre-4.0.0
         Environment: CloudStack: version 2.2.14.20120210101530
Hypervisors:  XenServer 5.6.100-47101p
Zones: one Basic and one Advanced zones are defined, each consisting of single XenServer host.
            Reporter: Vladimir Ostrovsky


CloudStack reports incorrect CPU & RAM usage values for hosts in Basic zone.
CPU usage is reported about 90%, when "top", XenCenter and other tools report that actual
usage is about 1%.

The "command=listCapacity&zoneid=1&type=1" returns something like "<percentused>90.49</percentused>".

The only way I found to get rid of this, is to:
* place the host into Maintenance mode,
* remove it from its Cluster,
* add the host again.

After this procedure, correct values are reported.

Interesting that in my practice it happens thrice for hosts in Basic zone, and never - for
hosts in Advanced.

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