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2026-03-12 - 00:50
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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
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackeslot3.osadl.org (updated Wed Mar 11, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2237274997246,24cyclictest2437487-21kworker/1:112:25:191
2237274997242,28cyclictest2363297-21kworker/1:211:05:161
2237274997138,31cyclictest2446658-21kworker/1:112:35:141
2237274996942,25cyclictest961764-1kworker/1:0H09:25:141
2237274996941,27cyclictest2388613-21kworker/1:311:30:011
2237274996940,28cyclictest2418873-21kworker/1:212:05:141
2237274996939,29cyclictest2316218-21kworker/1:110:15:121
2237274996939,29cyclictest2294042-21kworker/1:209:35:121
2237274996939,28cyclictest2307297-21kworker/1:210:00:151
2237274996842,25cyclictest2346889-21kworker/1:310:40:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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