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2024-04-16 - 09:07

OSADL QA Farm on Real-time of Mainline Linux

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

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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  Congatec
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 20 highest latencies:
System rackeslot8s.osadl.org (updated Tue Apr 16, 2024 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300592421140,2sleep23005918-21turbostat21:05:002
320121621100,1sleep10-21swapper/123:25:191
322829621030,2sleep0211rcuc/023:45:200
32238882960,1sleep3481rcuc/323:40:223
2867369993422,2cyclictest3032584-21cron21:25:000
29755052300,1chrt2975497-21ntp_states20:35:222
2867379992724,2cyclictest3164015-21sendmail23:00:013
2867369992522,2cyclictest510-21in:imuxsock00:00:000
2867371992320,2cyclictest3025711-21sendmail21:20:001
2867369992318,3cyclictest0-21swapper/000:40:010
2867379992218,2cyclictest0-21swapper/322:30:003
2867379992217,3cyclictest3170909-21cron23:05:003
2867374992219,2cyclictest3014988-21kthreadcore21:10:202
2867369992219,2cyclictest3191675-21dump-pmu-power23:20:000
2867369992217,3cyclictest0-21swapper/000:30:000
2867379992118,2cyclictest491-21avahi-daemon00:20:003
2867379992112,6cyclictest2897897-21tail19:30:143
2867371992117,3cyclictest510-21in:imuxsock22:30:001
2867369992117,3cyclictest512-21rs:main0
269698210,2rtkit-daemon725-21lldpd19:36:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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