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2026-01-05 - 03:52
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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 Mon Jan 05, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3112321570,5sleep1230199cyclictest21:25:091
1068911200,8ptp4l25726-21kworker/3:019:18:323
10842664,9sleep00-21swapper/019:18:210
106891660,1ptp4l401ktimersoftd/321:58:283
162652650,4sleep3391rcuc/300:25:583
9402590,2sleep10-21swapper/120:23:311
21762594,10sleep20-21swapper/219:22:432
106891590,1ptp4l401ktimersoftd/321:34:003
106891570,1ptp4l401ktimersoftd/323:07:513
106891570,1ptp4l401ktimersoftd/322:29:343
106891570,1ptp4l401ktimersoftd/322:29:343
100922560,2sleep30-21swapper/323:48:043
158232550,1sleep20-21swapper/200:25:132
106891530,1ptp4l401ktimersoftd/321:40:153
106891530,1ptp4l401ktimersoftd/300:18:033
106891530,1ptp4l401ktimersoftd/300:18:033
229699480,16cyclictest24746-21/usr/sbin/munin00:33:380
229699470,11cyclictest26395-21ssh21:53:200
106891450,1ptp4l401ktimersoftd/323:41:183
229699441,18cyclictest29148-21ssh00:06:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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