[Xen-bugs] [Bug 1394] New: cpu idle time / cpufreq residency become extremely large

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1394

           Summary: cpu idle time / cpufreq residency become extremely large
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: haicheng.li@xxxxxxxxx


Environment:
------------
Service Arch (ia32/ia32e/IA64): 
Guest Arch (ia32/ia32e/IA64): 
Guest OS Type (Linux/Windows):
Change Set: 
Hardware: 
Other:


Bug detailed description:
--------------------------
idle time / cpufreq residency output by xenpm could be very large.


Reproduce steps:
----------------
NOTICE that it may not be reproduced successfully every time.
1. boot with cpuidle cpufreq=xen hpetbroadcast
2. run `xenpm` command
3. check the idle time / cpufreq data

Current result:
----------------
[root@nhm-ep ~]# xenpm -c
cpu id               : 0
total C-states       : 3
idle time(ms)        : 125228
C0                   : transition [00000000000000000000]
                       residency  [00000000000000000000 ms]
C1                   : transition [00000000000000008117]
                       residency  [00000000000000005031 ms]
C2                   : transition [00000000000000031715]
                       residency  [00000000000000102309 ms]

cpu id               : 1
total C-states       : 3
idle time(ms)        : 18446744067564                   <-------------
C0                   : transition [00000000000000000000]
                       residency  [00000000000000000000 ms]
C1                   : transition [00000000000000001010]
                       residency  [00000000000000000531 ms]
C2                   : transition [00000000000000015758]
                       residency  [00000000000000108875 ms]

cpu id               : 2
total C-states       : 3
idle time(ms)        : 18446744066087
C0                   : transition [00000000000000000000]
                       residency  [00000000000000000000 ms]
C1                   : transition [00000000000000002089]
                       residency  [00000000000000000899 ms]
C2                   : transition [00000000000000017678]
                       residency  [00000000000000106361 ms]

cpu id               : 3
total C-states       : 3
idle time(ms)        : 18446744067795
C0                   : transition [00000000000000000000]
                       residency  [00000000000000000000 ms]
C1                   : transition [00000000000000003739]
                       residency  [00000000000000000639 ms]
C2                   : transition [00000000000000016164]
                       residency  [00000000000000108350 ms]

cpu id               : 4
total C-states       : 3
idle time(ms)        : 18446744064338
C0                   : transition [00000000000000000000]
                       residency  [00000000000000000000 ms]
C1                   : transition [00000000000000002996]
                       residency  [00000000000000001255 ms]
C2                   : transition [00000000000000022124]
                       residency  [00000000000000105717 ms]

cpu id               : 5
total C-states       : 3
idle time(ms)        : 18446744067420
C0                   : transition [00000000000000000000]
                       residency  [00000000000000000000 ms]
C1                   : transition [00000000000000001263]
                       residency  [00000000000000000725 ms]
C2                   : transition [00000000000000016881]
                       residency  [00000000000000107979 ms]

cpu id               : 6
total C-states       : 3
idle time(ms)        : 18446744064879
C0                   : transition [00000000000000000000]
                       residency  [00000000000000000000 ms]
C1                   : transition [00000000000000001915]
                       residency  [00000000000000001088 ms]
C2                   : transition [00000000000000019183]
                       residency  [00000000000000104932 ms]

cpu id               : 7
total C-states       : 3
idle time(ms)        : 18446744067147
C0                   : transition [00000000000000000000]
                       residency  [00000000000000000000 ms]
C1                   : transition [00000000000000006790]
                       residency  [00000000000000007864 ms]
C2                   : transition [00000000000000049513]
                       residency  [00000000000000097401 ms]


-- 
Configure bugmail: 
http://bugzilla.xensource.com/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.

_______________________________________________
Xen-bugs mailing list
Xen-bugs@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-bugs