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2026-04-29 - 23:29
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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 Wed Apr 29, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591231166,22phc2sys0-21swapper/307:07:153
227532200167,22sleep10-21swapper/107:08:281
226642200166,22sleep20-21swapper/207:07:232
227842199167,21sleep00-21swapper/007:08:500
23165996531,7cyclictest9-21ksoftirqd/008:44:590
23165996430,7cyclictest9-21ksoftirqd/011:00:000
23165996331,5cyclictest9-21ksoftirqd/008:25:270
23165996329,7cyclictest9-21ksoftirqd/007:25:010
23165996327,7cyclictest9-21ksoftirqd/012:10:010
23165996230,7cyclictest9-21ksoftirqd/012:20:140
23165996230,6cyclictest9-21ksoftirqd/008:35:140
23165996228,7cyclictest9-21ksoftirqd/010:00:160
23165996228,6cyclictest9-21ksoftirqd/012:35:000
23165996228,6cyclictest9-21ksoftirqd/011:05:000
23165996228,6cyclictest9-21ksoftirqd/009:40:020
23165996131,4cyclictest9-21ksoftirqd/008:20:230
23165996130,6cyclictest9-21ksoftirqd/011:20:180
23165996130,6cyclictest9-21ksoftirqd/011:05:180
23165996130,5cyclictest9-21ksoftirqd/011:40:190
23165996130,4cyclictest9-21ksoftirqd/007:10:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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