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2025-11-21 - 06:37
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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 Nov 21, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
65492231159,26sleep00-21swapper/019:09:270
65462213142,24sleep20-21swapper/219:09:242
62392208170,25sleep30-21swapper/319:05:283
65252203165,26sleep10-21swapper/119:09:081
6700991818,0cyclictest35-21ksoftirqd/322:35:193
6700991716,1cyclictest35-21ksoftirqd/322:05:003
6689991514,1cyclictest28-21ksoftirqd/223:20:172
234842150,0sleep10-21swapper/123:56:311
6689991412,1cyclictest28-21ksoftirqd/200:10:192
6689991412,1cyclictest28-21ksoftirqd/200:00:012
668999140,1cyclictest8340-21taskset22:50:162
668099140,13cyclictest0-21swapper/120:25:171
249182140,0sleep30-21swapper/322:29:023
6689991313,0cyclictest28-21ksoftirqd/222:00:012
314892130,0sleep00-21swapper/022:36:440
6689991212,0cyclictest28-21ksoftirqd/223:35:492
668099120,11cyclictest0-21swapper/121:30:201
6675991212,0cyclictest9-21ksoftirqd/023:20:150
6675991210,1cyclictest9-21ksoftirqd/022:05:000
670099119,1cyclictest35-21ksoftirqd/323:20:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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