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From "Harm van Tilborg (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-3383) GetHostStatsCommand fails when agent is running Ubuntu 13.04 (raring)
Date Fri, 05 Jul 2013 11:39:48 GMT
Harm van Tilborg created CLOUDSTACK-3383:
--------------------------------------------

             Summary: GetHostStatsCommand fails when agent is running Ubuntu 13.04 (raring)
                 Key: CLOUDSTACK-3383
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-3383
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: KVM
    Affects Versions: 4.1.0
         Environment: Ubuntu 13.04
            Reporter: Harm van Tilborg
            Priority: Minor


2013-07-05 13:02:37,782 DEBUG [cloud.agent.Agent] (agentRequest-Handler-3:null) Processing
command: com.cloud.agent.api.GetHostStatsCommand
2013-07-05 13:02:37,782 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-3:null)
Executing: /bin/bash -c idle=$(top -b -n 1|grep Cpu\(s\):|cut -d% -f4|cut -d, -f2);echo $idle
2013-07-05 13:02:37,940 DEBUG [kvm.resource.LibvirtComputingResource] (agentRequest-Handler-3:null)
Execution is successful.
2013-07-05 13:02:37,941 DEBUG [cloud.agent.Agent] (agentRequest-Handler-3:null) Seq 1-2144469000:
 { Ans: , MgmtId: 159497075554, via: 1, Ver: v1, Flags: 10, [{"Answer":{"result":false,"details":"empty
String","wait":0}}] }

When I check the output of Ubuntu's 13.04 top (top -v = procps-ng version 3.3.3), it's formatted
like this:

raring# top -b -n 1|grep Cpu\(s\):
%Cpu(s):  0.2 us,  0.2 sy,  0.0 ni, 99.5 id,  0.1 wa,  0.0 hi,  0.0 si,  0.0 st

While on Ubuntu 12.04 (top -v = procps version 3.2.8) it looks like this:
precise# top -b -n 1|grep Cpu\(s\):
Cpu(s):  0.3%us,  0.1%sy,  0.0%ni, 99.6%id,  0.1%wa,  0.0%hi,  0.0%si,  0.0%st

So I believe it is better to split the string on a comma (,) than using the percentage (%).

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