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2026-03-13 - 19:23
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Fri Mar 13, 2026 12:46:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2361977991690,168cyclictest0-21swapper/709:30:117
2361973996911,19cyclictest0-21swapper/311:21:043
2361973996810,19cyclictest0-21swapper/307:23:303
236197399679,19cyclictest0-21swapper/311:38:253
236197399668,19cyclictest0-21swapper/312:11:323
236197599614,38cyclictest2450981-21kworker/6:010:05:045
2361972996041,0cyclictest0-21swapper/207:40:152
236197399580,17cyclictest0-21swapper/309:00:153
2361973995738,19cyclictest511ktimers/309:38:313
2361975995435,18cyclictest0-21swapper/509:35:015
2361975995415,20cyclictest0-21swapper/507:50:155
236197399539,39cyclictest0-21swapper/309:12:373
2361973995331,19cyclictest0-21swapper/310:28:213
2361973995331,19cyclictest0-21swapper/308:00:423
2361973995331,19cyclictest0-21swapper/307:11:333
2361973995330,19cyclictest0-21swapper/312:30:043
236197399529,39cyclictest781-21mta-sts-daemon09:49:403
2361973995231,20cyclictest0-21swapper/308:11:503
2361973995231,20cyclictest0-21swapper/308:11:493
2361973995231,20cyclictest0-21swapper/307:43:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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