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2025-11-20 - 07:20
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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 rackdslot3.osadl.org (updated Thu Nov 20, 2025 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5902224197,18sleep20-21swapper/219:09:582
137191207173,22phc2sys0-21swapper/319:06:083
3462206173,22sleep00-21swapper/019:07:110
5592200170,19sleep10-21swapper/119:09:421
778821700,4sleep390699cyclictest22:10:103
136991630,1ptp4l401ktimersoftd/300:23:163
207312580,6sleep190499cyclictest20:20:241
136991530,1ptp4l391rcuc/323:53:183
132691510,1getstats0-21swapper/322:55:183
59298500,2rtkit-daemon591-21rtkit-daemon19:29:141
132691500,1getstats30835-21kworker/3:223:00:193
136991490,0ptp4l401ktimersoftd/322:35:313
903994741,3cyclictest13389-21wc23:30:000
903994741,3cyclictest13389-21wc23:30:000
132891470,6getstats90699cyclictest20:06:093
136991420,0ptp4l401ktimersoftd/321:55:483
136991410,0ptp4l401ktimersoftd/319:56:073
906994035,3cyclictest41-21ksoftirqd/300:20:013
90599402,35cyclictest10736-21cron21:10:002
90599401,37cyclictest33-21ksoftirqd/222:55:372
90599391,35cyclictest12120-21latency_hist20:05:002
906993731,4cyclictest41-21ksoftirqd/322:19:253
90599373,33cyclictest30051-21kworker/2:122:22:082
905993731,4cyclictest33-21ksoftirqd/219:57:362
90499374,3cyclictest25-21ksoftirqd/122:20:001
904993732,3cyclictest25-21ksoftirqd/120:35:001
904993731,3cyclictest25-21ksoftirqd/123:30:011
904993731,3cyclictest25-21ksoftirqd/123:30:011
90599365,30cyclictest30051-21kworker/2:123:55:432
90599365,19cyclictest30051-21kworker/2:122:39:312
905993631,3cyclictest33-21ksoftirqd/223:20:002
90599362,24cyclictest18906-21kworker/2:220:51:242
905993613,20cyclictest19877-21sed20:20:162
90599361,24cyclictest24772-21kworker/2:021:47:362
905993611,23cyclictest17235-21sed21:20:232
904993631,3cyclictest25-21ksoftirqd/123:10:131
904993631,3cyclictest25-21ksoftirqd/121:44:591
904993631,3cyclictest25-21ksoftirqd/121:00:001
904993631,3cyclictest25-21ksoftirqd/120:40:191
904993631,3cyclictest25-21ksoftirqd/119:40:011
904993631,3cyclictest25-21ksoftirqd/100:05:001
904993631,2cyclictest25-21ksoftirqd/100:25:011
904993630,4cyclictest25-21ksoftirqd/120:25:591
904993630,3cyclictest25-21ksoftirqd/122:50:001
904993630,3cyclictest25-21ksoftirqd/100:00:001
904993629,4cyclictest25-21ksoftirqd/122:20:121
904993629,4cyclictest25-21ksoftirqd/119:44:151
904993624,9cyclictest25-21ksoftirqd/123:00:131
59298360,9rtkit-daemon0-21swapper/023:37:060
280042360,2sleep0121rcu_preempt21:45:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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