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2026-03-22 - 05:52
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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
Characteristics of the 20 highest latencies:
System rackdslot0.osadl.org (updated Sun Mar 22, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2830699230,22cyclictest2308-21munin-plugin-st23:10:012
2830299230,5cyclictest0-21swapper/122:03:081
2829599230,5cyclictest0-21swapper/020:27:440
2829599230,1cyclictest0-21swapper/021:00:130
2830299224,17cyclictest0-21swapper/120:23:531
2829599220,18cyclictest0-21swapper/023:05:120
2830699210,20cyclictest843-21systemd-network22:13:562
2830699210,20cyclictest843-21systemd-network21:34:472
2830299200,19cyclictest870-21systemd-logind21:16:521
2830699198,10cyclictest0-21swapper/221:46:292
2830699194,1cyclictest0-21swapper/221:05:002
2830699192,2cyclictest4258-21grep20:20:132
2830699192,1cyclictest0-21swapper/223:25:582
28306991916,2cyclictest1799-21cpuspeed_turbos00:05:132
28306991913,5cyclictest0-21swapper/222:20:012
2830699190,1cyclictest0-21swapper/219:50:032
2830699190,18cyclictest0-21swapper/219:15:302
28302991917,1cyclictest0-21swapper/122:55:191
28302991917,1cyclictest0-21swapper/121:52:271
28302991917,1cyclictest0-21swapper/100:37:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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