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2026-08-12 - 14:18
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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 rackdslot1.osadl.org (updated Wed Aug 12, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
935321550,6sleep1814599cyclictest19:10:231
814699690,37cyclictest24049-21chrt19:41:372
814699680,31cyclictest25053-21chrt23:13:192
814699680,31cyclictest25053-21chrt23:13:192
814699670,38cyclictest14730-21chrt20:30:592
814699670,36cyclictest21904-21chrt19:38:522
814699661,28cyclictest26332-21chrt19:46:272
814699660,37cyclictest10819-21chrt22:43:092
814699660,37cyclictest10819-21chrt22:43:092
814699660,36cyclictest3324-21taskset21:18:582
814699660,35cyclictest7726-21chrt20:15:382
814699660,28cyclictest13488-21hddtemp_smartct19:20:172
814699650,36cyclictest17310-21chrt19:28:492
134491650,19ptp4l0-21swapper/300:15:253
814699640,36cyclictest12615-21chrt20:28:222
814699640,35cyclictest30385-21taskset00:34:422
814699640,35cyclictest15265-21chrt20:35:002
814699630,35cyclictest22167-21chrt21:58:212
814699630,28cyclictest31459-21taskset20:00:142
814699630,27cyclictest29304-21chrt22:13:292
814699630,27cyclictest29304-21chrt22:13:292
814699630,27cyclictest28095-21chrt00:29:492
814699620,36cyclictest32357-21taskset00:35:342
814699620,35cyclictest10207-21chrt19:14:092
814699620,34cyclictest16049-21taskset00:03:452
814699620,28cyclictest25457-21taskset00:20:302
134491620,5ptp4l0-21swapper/320:25:193
814699610,36cyclictest11317-21chrt23:52:112
814699610,35cyclictest1301-21snmpd20:48:292
814699610,35cyclictest12621-21taskset21:36:392
814699610,28cyclictest26265-21chrt20:56:272
134491610,26ptp4l41-21ksoftirqd/319:45:253
814699600,36cyclictest24539-21chrt22:01:182
814699600,36cyclictest19646-21chrt19:34:232
814699600,34cyclictest28792-21taskset21:04:092
814699600,34cyclictest10188-21taskset20:21:402
814699600,29cyclictest1401-21chrt22:22:032
814699600,28cyclictest5426-21taskset20:10:372
814699600,28cyclictest24082-21chrt20:52:542
814699600,27cyclictest6100-21chrt22:32:342
814699600,27cyclictest1860-21taskset23:33:112
814699590,35cyclictest23153-21chrt00:18:542
814699590,27cyclictest13805-21chrt23:59:412
134491590,2ptp4l0-21swapper/000:05:480
814699580,29cyclictest31104-21chrt19:58:502
8146995714,41cyclictest0-21swapper/223:23:092
814699570,28cyclictest13207-21taskset22:46:382
134491570,3ptp4l0-21swapper/100:20:241
134491560,4ptp4l0-21swapper/019:55:320
814599557,6cyclictest0-21swapper/123:50:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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