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2026-09-02 - 23:48
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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 Sep 02, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17230997715,60cyclictest0-21swapper/209:00:292
134491770,4ptp4l0-21swapper/109:55:241
134491710,10ptp4l15105-21df07:05:130
1723099690,29cyclictest17742-21taskset10:37:352
1723099680,31cyclictest19253-21chrt07:14:242
1723099680,30cyclictest6336-21taskset12:30:332
1723099680,30cyclictest18176-21taskset11:48:192
1723099680,28cyclictest5806-21latency_hist07:55:012
1723099677,20cyclictest22550-21basename07:20:172
1723099670,31cyclictest8394-21chrt10:18:372
1723099670,30cyclictest20029-21taskset10:42:122
1723099660,31cyclictest4162-21chrt12:27:112
1723099660,31cyclictest26291-21taskset08:39:092
1723099660,31cyclictest10621-21chrt11:30:312
1723099660,30cyclictest8539-21chrt11:28:182
1723099660,30cyclictest21442-21chrt07:18:052
1723099660,29cyclictest26468-21chrt09:46:002
1723099660,29cyclictest1699-21taskset12:20:452
1723099651,30cyclictest6061-21chrt11:21:402
1723099651,30cyclictest6061-21chrt11:21:392
1723099651,28cyclictest12330-21taskset08:07:112
1723099650,36cyclictest7665-21taskset07:57:162
1723099650,32cyclictest21678-21chrt08:28:522
1723099650,31cyclictest30943-21chrt08:49:402
1723099650,30cyclictest28949-21chrt09:53:262
1723099650,21cyclictest22588-21/usr/sbin/munin08:30:182
1723099650,21cyclictest22588-21/usr/sbin/munin08:30:182
134491650,4ptp4l0-21swapper/008:15:240
134491650,3ptp4l16274-21wc11:45:111
1723099640,35cyclictest1467-21taskset10:04:342
1723099640,31cyclictest24435-21taskset09:44:202
1723099640,31cyclictest17469-21chrt09:28:392
1723099640,30cyclictest7998-21taskset09:09:212
1723099640,30cyclictest15540-21chrt10:33:542
1723099640,29cyclictest28445-21chrt07:31:292
1723099640,29cyclictest25075-21taskset10:55:042
1723099640,29cyclictest14990-21taskset09:21:252
134491640,4ptp4l0-21swapper/107:30:181
1723099631,30cyclictest13162-21chrt10:27:472
1723099630,32cyclictest1636-21chrt11:14:452
1723099630,31cyclictest21861-21chrt09:36:052
1723099630,30cyclictest31666-21taskset11:08:562
1723099630,30cyclictest28668-21taskset08:44:542
1723099630,30cyclictest25065-21chrt12:03:042
1723099630,30cyclictest22755-21taskset11:58:102
1723099630,30cyclictest19131-21chrt08:20:422
1723099630,29cyclictest31301-21taskset09:56:232
1723099630,29cyclictest3068-21chrt08:58:102
1723099630,29cyclictest27347-21taskset12:07:532
1723099630,29cyclictest10054-21taskset09:10:342
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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