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2024-05-28 - 06:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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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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 rack0slot8s.osadl.org (updated Tue May 28, 2024 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
944801000,95rtkit-daemon0-21swapper/419:07:226
288991920,82ptp4l0-21swapper/119:06:041
1952227465,7sleep110-21swapper/1119:08:053
1963326454,8sleep00-21swapper/019:09:420
1939326141,10sleep70-21swapper/719:06:139
1951626049,9sleep50-21swapper/519:07:587
1938326050,8sleep100-21swapper/1019:06:042
1962525443,9sleep60-21swapper/619:09:368
309792500,0sleep30-21swapper/319:25:105
2001799221,9cyclictest0-21swapper/022:25:000
2003099201,15cyclictest0-21swapper/320:15:015
2006099190,18cyclictest0-21swapper/923:35:0011
2003599190,7cyclictest0-21swapper/422:15:006
288991180,0ptp4l0-21swapper/123:35:001
288991180,0ptp4l0-21swapper/123:05:121
2002699183,8cyclictest0-21swapper/219:20:014
2002699183,10cyclictest0-21swapper/219:25:014
288991170,1ptp4l21-21ksoftirqd/123:40:281
288991170,1ptp4l21-21ksoftirqd/123:40:281
288991170,0ptp4l0-21swapper/123:00:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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