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2025-12-20 - 18:32
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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 Sat Dec 20, 2025 12:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
120742217156,48sleep10-21swapper/107:07:371
121852214158,44sleep00-21swapper/007:09:050
122392202164,25sleep20-21swapper/207:09:472
119372201163,24sleep30-21swapper/307:05:513
12369991818,0cyclictest35-21ksoftirqd/309:00:003
12369991818,0cyclictest35-21ksoftirqd/308:20:003
12369991717,0cyclictest35-21ksoftirqd/311:45:203
12369991717,0cyclictest35-21ksoftirqd/307:10:163
1236999166,5cyclictest35-21ksoftirqd/312:00:143
12369991616,0cyclictest35-21ksoftirqd/311:20:213
12369991616,0cyclictest35-21ksoftirqd/310:05:213
12369991615,1cyclictest35-21ksoftirqd/310:30:143
12369991615,1cyclictest35-21ksoftirqd/310:30:143
12369991615,0cyclictest35-21ksoftirqd/310:50:153
12369991614,1cyclictest35-21ksoftirqd/312:20:253
12369991515,0cyclictest35-21ksoftirqd/312:10:153
12369991514,1cyclictest35-21ksoftirqd/309:50:203
12369991514,1cyclictest35-21ksoftirqd/309:45:163
12369991514,1cyclictest35-21ksoftirqd/307:30:213
1236999139,3cyclictest35-21ksoftirqd/310:30:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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