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2026-01-02 - 11:53
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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 50 highest latencies:
System rackdslot3.osadl.org (updated Fri Jan 02, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491231164,23phc2sys0-21swapper/319:07:143
68962202170,22sleep20-21swapper/219:09:152
68132202168,22sleep10-21swapper/119:08:081
67392197164,22sleep00-21swapper/019:07:120
210821390,7sleep0724999cyclictest22:20:130
1394918464,11phc2sys0-21swapper/319:10:013
7249996427,6cyclictest9-21ksoftirqd/019:35:160
7249996329,6cyclictest9-21ksoftirqd/019:55:280
139391630,1ptp4l401ktimersoftd/323:03:453
7249996231,7cyclictest9-21ksoftirqd/020:15:000
7249996230,4cyclictest9-21ksoftirqd/021:40:000
7249996226,6cyclictest9-21ksoftirqd/020:05:250
7249996226,6cyclictest9-21ksoftirqd/020:05:250
7249996126,6cyclictest9-21ksoftirqd/023:45:010
7249996126,5cyclictest9-21ksoftirqd/000:15:180
109902610,1sleep30-21swapper/319:15:243
7249996029,5cyclictest9-21ksoftirqd/023:25:230
7249996028,4cyclictest9-21ksoftirqd/000:30:260
7249996026,4cyclictest9-21ksoftirqd/000:35:160
7249996024,6cyclictest9-21ksoftirqd/022:10:130
7249996022,7cyclictest9-21ksoftirqd/019:15:250
113272600,1sleep10-21swapper/123:45:231
7251995925,25cyclictest33-21ksoftirqd/219:20:002
7249995927,5cyclictest9-21ksoftirqd/021:00:290
7249995926,6cyclictest9-21ksoftirqd/020:00:140
7249995926,5cyclictest9-21ksoftirqd/022:55:240
7249995925,4cyclictest9-21ksoftirqd/019:30:270
7249995924,7cyclictest9-21ksoftirqd/019:45:180
7249995923,7cyclictest9-21ksoftirqd/021:10:180
7249995923,4cyclictest9-21ksoftirqd/021:45:140
7249995829,4cyclictest9-21ksoftirqd/019:28:430
7249995827,4cyclictest9-21ksoftirqd/023:54:590
7249995826,6cyclictest9-21ksoftirqd/022:50:240
7249995826,4cyclictest9-21ksoftirqd/000:20:160
7249995823,6cyclictest9-21ksoftirqd/000:00:290
7249995823,4cyclictest9-21ksoftirqd/020:35:280
7249995822,6cyclictest9-21ksoftirqd/022:25:220
7249995728,7cyclictest9-21ksoftirqd/023:05:220
7249995728,7cyclictest9-21ksoftirqd/023:05:220
7249995726,3cyclictest9-21ksoftirqd/000:05:140
7249995726,3cyclictest9-21ksoftirqd/000:05:140
7249995725,6cyclictest9-21ksoftirqd/023:20:140
7249995725,4cyclictest9-21ksoftirqd/022:40:160
7249995724,6cyclictest9-21ksoftirqd/022:45:260
7249995724,4cyclictest9-21ksoftirqd/023:55:180
7249995724,4cyclictest9-21ksoftirqd/019:45:000
7249995720,7cyclictest9-21ksoftirqd/019:50:280
7249995627,4cyclictest9-21ksoftirqd/023:45:130
7249995627,3cyclictest9-21ksoftirqd/019:20:130
7249995626,8cyclictest9-21ksoftirqd/022:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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