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2026-05-08 - 04:14
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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 rack1slot1.osadl.org (updated Fri May 08, 2026 00:45:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
187892242156,58sleep00-21swapper/019:07:530
186352201162,25sleep20-21swapper/219:05:532
189012199160,25sleep30-21swapper/319:09:213
186712198161,24sleep10-21swapper/119:06:201
149792690,0sleep00-21swapper/023:20:190
123322680,0sleep00-21swapper/022:35:140
1904499140,13cyclictest13237-21apt20:05:012
19031991312,1cyclictest9-21ksoftirqd/022:55:010
19031991311,1cyclictest9-21ksoftirqd/022:50:010
192502120,1sleep319252-21aten_r1power_cu19:10:123
19056991212,0cyclictest35-21ksoftirqd/321:45:013
1904499120,11cyclictest0-21swapper/200:35:152
19031991210,1cyclictest9-21ksoftirqd/000:30:010
19056991111,0cyclictest0-21swapper/320:45:223
1903199119,1cyclictest9-21ksoftirqd/023:00:000
1904499109,1cyclictest28-21ksoftirqd/221:36:292
1904499100,9cyclictest21590-21munin-node23:33:192
1904499100,10cyclictest0-21swapper/223:44:032
1903199109,1cyclictest9-21ksoftirqd/021:55:100
1903199109,1cyclictest9-21ksoftirqd/021:40:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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