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2025-11-07 - 19:18
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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 rackdslot3.osadl.org (updated Fri Nov 07, 2025 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132232205174,21sleep10-21swapper/107:05:571
133392204169,23sleep30-21swapper/307:07:293
132072204170,23sleep00-21swapper/007:05:450
132032202169,22sleep20-21swapper/207:05:432
144302750,2sleep30-21swapper/309:25:173
108822600,3sleep1231rcuc/110:25:201
262882580,2sleep10-21swapper/109:50:141
149472560,2sleep10-21swapper/111:40:191
136991560,1ptp4l401ktimersoftd/311:32:043
117392550,3sleep211740-21sshd08:10:262
287352540,2sleep20-21swapper/209:55:172
136991530,1ptp4l401ktimersoftd/309:36:443
136991470,36ptp4l0-21swapper/307:10:013
136991440,1ptp4l401ktimersoftd/311:15:583
136991440,0ptp4l401ktimersoftd/307:15:003
136991420,0ptp4l401ktimersoftd/308:08:083
136991410,0ptp4l401ktimersoftd/308:32:153
13839994035,3cyclictest41-21ksoftirqd/311:50:003
132691400,1getstats0-21swapper/312:23:223
132691390,1getstats0-21swapper/312:18:233
13837993823,13cyclictest25-21ksoftirqd/107:40:011
13839993732,3cyclictest41-21ksoftirqd/309:10:013
1383999371,33cyclictest10013-21irqrtprio09:15:193
13836993728,6cyclictest9-21ksoftirqd/010:35:010
13839993630,4cyclictest41-21ksoftirqd/308:15:403
13839993630,3cyclictest41-21ksoftirqd/307:49:593
13839993629,4cyclictest41-21ksoftirqd/310:20:003
13839993623,4cyclictest41-21ksoftirqd/308:51:393
13838993630,4cyclictest33-21ksoftirqd/210:49:362
13838993630,4cyclictest33-21ksoftirqd/208:58:322
13838993630,4cyclictest33-21ksoftirqd/208:00:582
13838993630,4cyclictest33-21ksoftirqd/207:49:442
13838993629,5cyclictest33-21ksoftirqd/211:25:312
13837993631,3cyclictest5091-21cron08:00:001
13837993631,3cyclictest5091-21cron08:00:001
13836993629,4cyclictest9-21ksoftirqd/008:25:570
136991360,0ptp4l401ktimersoftd/312:11:273
136991360,0ptp4l401ktimersoftd/310:55:263
13839993532,2cyclictest41-21ksoftirqd/312:35:003
13839993531,3cyclictest41-21ksoftirqd/312:39:593
13839993530,3cyclictest41-21ksoftirqd/310:45:003
13839993530,3cyclictest41-21ksoftirqd/310:30:003
13839993530,3cyclictest41-21ksoftirqd/310:25:013
13839993529,4cyclictest41-21ksoftirqd/310:36:293
13839993529,4cyclictest41-21ksoftirqd/309:53:253
13839993529,4cyclictest41-21ksoftirqd/308:39:323
13839993529,4cyclictest41-21ksoftirqd/307:53:263
13839993529,3cyclictest41-21ksoftirqd/311:23:273
13839993529,3cyclictest41-21ksoftirqd/311:23:273
13838993531,3cyclictest33-21ksoftirqd/208:44:472
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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