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2026-06-13 - 04:32
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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 rack0slot5.osadl.org (updated Sat Jun 13, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3560275995488,42cyclictest0-21swapper/1521:21:197
35602759954024,515cyclictest0-21swapper/1522:01:197
35602759954024,515cyclictest0-21swapper/1522:01:197
3560267995210,520cyclictest0-21swapper/1300:29:195
35602379950319,483cyclictest0-21swapper/620:53:1912
356024899502501,1cyclictest0-21swapper/919:45:1915
356021899495463,32cyclictest0-21swapper/119:11:191
356021499485426,30cyclictest0-21swapper/021:26:420
35602759946922,30cyclictest160-21ksoftirqd/1520:45:197
35602149946820,28cyclictest0-21swapper/023:59:400
35602659946720,29cyclictest0-21swapper/1223:53:584
35602289946721,441cyclictest3615651-21kworker/4:2+i915-unordered20:30:1910
356022599466465,1cyclictest0-21swapper/321:35:199
356024899465464,1cyclictest3521789-21kworker/9:3+i915-unordered19:11:1915
356021899464464,0cyclictest0-21swapper/120:26:191
35602659946317,28cyclictest0-21swapper/1222:46:414
3560228994620,461cyclictest0-21swapper/423:19:1910
356024299457457,0cyclictest3662611-21kworker/7:2+i915-unordered21:21:1913
3560267994550,454cyclictest142-21ksoftirqd/1300:06:195
356023399454453,1cyclictest0-21swapper/523:19:1911
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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