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2026-07-21 - 19:45
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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 rackdslot4.osadl.org (updated Tue Jul 21, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591235167,23phc2sys0-21swapper/307:08:083
30592205171,23sleep10-21swapper/107:07:341
32232204170,23sleep20-21swapper/207:09:362
9612202169,22sleep00-21swapper/007:05:120
1669321690,8sleep3354999cyclictest07:35:203
3546995922,4cyclictest9-21ksoftirqd/009:25:160
354999585,5cyclictest6116-21apt-config08:19:593
3546995823,7cyclictest9-21ksoftirqd/011:00:000
3546995721,4cyclictest9-21ksoftirqd/010:32:210
139422570,3sleep0111rcuc/009:40:130
354699555,9cyclictest9-21ksoftirqd/011:25:130
354699555,9cyclictest9-21ksoftirqd/010:40:200
3546995520,5cyclictest9-21ksoftirqd/009:31:120
26092540,5sleep3354999cyclictest10:20:243
354699536,7cyclictest9-21ksoftirqd/012:10:280
3546995319,5cyclictest9-21ksoftirqd/009:06:530
3546995319,10cyclictest9-21ksoftirqd/012:10:000
354699526,8cyclictest9-21ksoftirqd/011:40:250
354699524,8cyclictest9-21ksoftirqd/009:35:140
354699524,8cyclictest9-21ksoftirqd/008:15:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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