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2024-12-11 - 16:27

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack8slot4s.osadl.org (updated Wed Dec 11, 2024 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14934902243173,23sleep00-21swapper/007:06:460
14934182230179,41sleep20-21swapper/207:05:432
14935482221188,21sleep40-21swapper/407:07:384
14934962214177,24sleep60-21swapper/607:06:526
14934552214179,23sleep30-21swapper/307:06:173
14936402211179,20sleep70-21swapper/707:08:537
14934912210172,24sleep10-21swapper/107:06:461
14934752207175,21sleep50-21swapper/507:06:355
16337692580,0sleep10-21swapper/111:10:131
16400332430,0sleep00-21swapper/011:20:130
149396899280,23cyclictest740-21gdbus12:35:017
1493951992723,3cyclictest1541071-21apt08:30:001
149396899260,21cyclictest0-21swapper/709:50:087
149396499260,25cyclictest1838504-21systemd-journal08:30:006
1493968992523,1cyclictest1596028-21apt-get10:05:117
1493968992520,4cyclictest1549651-21awk08:45:017
1493951992523,1cyclictest0-21swapper/111:55:141
149394899250,24cyclictest1497123-21latency_hist07:15:000
149394899250,24cyclictest0-21swapper/012:25:120
1493962992423,1cyclictest0-21swapper/511:50:125
149396299240,23cyclictest0-21swapper/512:35:005
149395999240,23cyclictest0-21swapper/410:25:014
149395799240,22cyclictest1644687-21turbostat11:30:003
1493951992423,1cyclictest0-21swapper/109:30:121
1493951992422,1cyclictest1615894-21basename10:40:001
1493948992422,1cyclictest673-21in:imuxsock07:39:590
1493948992422,1cyclictest1627717-21apt-get11:00:110
149394899240,23cyclictest1584188-21munin-run09:45:000
1493968992321,0cyclictest0-21swapper/707:10:137
149396899230,23cyclictest1558202-21turbostat09:00:017
149396899230,22cyclictest1638986-21awk11:20:007
149396899230,22cyclictest0-21swapper/708:25:017
1493964992321,1cyclictest0-21swapper/609:55:116
149396499230,22cyclictest1532657-21apt-get08:15:136
149396499230,22cyclictest0-21swapper/610:50:076
149396499230,22cyclictest0-21swapper/608:55:016
1493962992321,1cyclictest1616295-21apt-get10:40:125
1493962992321,1cyclictest1601314-21perf10:14:595
149396299230,22cyclictest1500528-21munin-run07:19:595
149396299230,22cyclictest0-21swapper/512:20:125
1493959992322,1cyclictest0-21swapper/412:00:004
1493959992321,1cyclictest0-21swapper/409:15:014
149395999230,22cyclictest1552505-21munin-run08:50:014
149395999230,22cyclictest0-21swapper/408:00:004
149395999230,0cyclictest0-21swapper/411:35:134
1493957992321,1cyclictest0-21swapper/312:35:143
149395799230,22cyclictest1682391-21apt-config12:35:003
149395799230,22cyclictest1587452-21apt-get09:50:083
149395799230,22cyclictest0-21swapper/308:10:113
149395799230,22cyclictest0-21swapper/307:25:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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