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2026-08-31 - 03:37
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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 rackdslot3.osadl.org (updated Mon Aug 31, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211222600,41sleep09-21ksoftirqd/019:05:160
136662207173,22sleep30-21swapper/319:07:543
136292204172,21sleep10-21swapper/119:07:231
136352203170,22sleep20-21swapper/219:07:282
747721570,2sleep10-21swapper/121:10:191
139391890,1ptp4l5681-21apt-get00:30:133
139391690,1ptp4l391rcuc/323:20:193
14122996633,4cyclictest25-21ksoftirqd/100:15:001
14122996331,8cyclictest25-21ksoftirqd/122:55:001
14122996327,8cyclictest25-21ksoftirqd/123:40:001
14122996230,7cyclictest25-21ksoftirqd/122:30:001
14122996223,10cyclictest25-21ksoftirqd/120:45:201
14122995928,8cyclictest25-21ksoftirqd/121:40:191
14122995927,3cyclictest25-21ksoftirqd/121:29:591
14122995924,4cyclictest25-21ksoftirqd/120:25:241
14122995916,7cyclictest25-21ksoftirqd/123:55:151
1412299587,8cyclictest25-21ksoftirqd/100:25:001
14122995827,8cyclictest25-21ksoftirqd/100:00:151
14122995727,8cyclictest25-21ksoftirqd/122:20:011
14122995725,9cyclictest25-21ksoftirqd/120:11:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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