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2025-12-22 - 23:57
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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 Mon Dec 22, 2025 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33685399954010,529cyclictest0-21swapper/1119:17:423
33685019953816,521cyclictest0-21swapper/219:48:428
33685019953816,521cyclictest0-21swapper/219:48:428
3368501995162,512cyclictest0-21swapper/219:27:428
33685569948615,59cyclictest0-21swapper/1521:43:427
33684959947824,453cyclictest0-21swapper/021:43:420
336850599477476,1cyclictest3377245-21kworker/3:2+i915-unordered19:17:429
33685399947525,29cyclictest0-21swapper/1123:43:283
33685489947426,28cyclictest0-21swapper/1300:01:245
33685569947123,30cyclictest0-21swapper/1522:42:047
33685569947123,30cyclictest0-21swapper/1522:42:047
33685489947121,29cyclictest0-21swapper/1321:44:275
33685569947018,58cyclictest0-21swapper/1519:35:427
33685489947022,28cyclictest0-21swapper/1323:23:045
33685519946924,29cyclictest0-21swapper/1422:35:426
33685519946718,29cyclictest0-21swapper/1422:25:036
33685289946517,446cyclictest0-21swapper/921:34:0515
33685569946413,449cyclictest0-21swapper/1520:59:037
33685489946317,30cyclictest0-21swapper/1322:07:425
33685289946316,30cyclictest0-21swapper/920:48:4215
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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