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2026-01-11 - 02:52
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackbslot6.osadl.org (updated Sat Jan 10, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
143921790,5sleep21902399cyclictest10:52:192
1068911040,4ptp4l401ktimersoftd/307:21:303
106891690,1ptp4l401ktimersoftd/310:41:353
106891660,2ptp4l401ktimersoftd/309:56:173
186132650,5sleep31903199cyclictest11:11:073
58192640,2sleep31903199cyclictest10:25:223
187172624,9sleep10-21swapper/107:23:341
106891590,1ptp4l401ktimersoftd/312:26:083
106891590,1ptp4l401ktimersoftd/312:26:083
106891590,1ptp4l401ktimersoftd/307:36:303
75142560,4sleep37512-21turbostat12:06:073
187512564,10sleep20-21swapper/207:23:592
106891550,7ptp4l401ktimersoftd/312:32:443
19019995322,9cyclictest25-21ksoftirqd/109:47:351
319522510,1sleep10-21swapper/111:56:301
19019995123,11cyclictest25-21ksoftirqd/112:06:381
19019995120,9cyclictest25-21ksoftirqd/109:51:461
287142500,2sleep20-21swapper/208:51:192
19019995022,5cyclictest25-21ksoftirqd/111:11:111
19019995020,8cyclictest25-21ksoftirqd/109:33:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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