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2025-06-28 - 22:52
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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 rack8slot4.osadl.org (updated Sat Jun 28, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27988822234197,24sleep70-21swapper/707:06:187
27988772222188,22sleep20-21swapper/207:06:132
28009862217183,22sleep50-21swapper/507:08:415
28009822216186,19sleep10-21swapper/107:08:371
28009022215186,18sleep40-21swapper/407:07:274
28009692213185,18sleep60-21swapper/607:08:266
28008622208177,20sleep00-21swapper/007:06:510
28009482206179,17sleep30-21swapper/307:08:073
2801281993838,0cyclictest0-21swapper/212:36:222
2801291993634,1cyclictest0-21swapper/412:36:224
280129199340,29cyclictest0-21swapper/412:15:014
280128199341,28cyclictest0-21swapper/208:25:012
2801291993227,4cyclictest0-21swapper/408:25:014
280128699320,31cyclictest1202534-21systemd-journal12:15:013
280128199320,31cyclictest2945590-21sh11:35:012
280128199320,29cyclictest2904957-21apt-get10:21:222
280127999323,1cyclictest2858655-21cron08:55:001
2801286993127,3cyclictest2893655-21cron10:00:003
280128199310,30cyclictest2970345-21latency_hist12:20:012
280130199300,29cyclictest0-21swapper/708:40:007
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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