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2026-06-25 - 23:13
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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 Thu Jun 25, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1636321520,3sleep20-21swapper/222:45:002
134491700,5ptp4l14861-21awk20:20:280
13169996632,8cyclictest25-21ksoftirqd/120:45:141
13169996627,7cyclictest25-21ksoftirqd/123:40:011
134491650,19ptp4l0-21swapper/000:30:110
13171996528,6cyclictest41-21ksoftirqd/322:30:013
13169996528,4cyclictest25-21ksoftirqd/123:55:241
140042620,5sleep30-21swapper/320:20:193
134491620,4ptp4l11133-21diskstats20:15:160
13171996228,4cyclictest41-21ksoftirqd/319:35:013
13171996227,9cyclictest41-21ksoftirqd/321:40:153
13171996227,9cyclictest41-21ksoftirqd/320:25:173
13169996231,8cyclictest25-21ksoftirqd/121:10:001
13169996226,4cyclictest25-21ksoftirqd/121:55:291
134491610,4ptp4l0-21swapper/200:02:202
13171996131,9cyclictest41-21ksoftirqd/322:45:263
13169996130,8cyclictest25-21ksoftirqd/100:30:181
13169996125,8cyclictest25-21ksoftirqd/123:25:171
13169996120,4cyclictest25-21ksoftirqd/123:10:231
13171996027,8cyclictest41-21ksoftirqd/323:05:013
13171996026,8cyclictest41-21ksoftirqd/300:20:193
134491590,4ptp4l0-21swapper/220:20:172
13171995928,6cyclictest41-21ksoftirqd/300:10:133
13169995924,7cyclictest25-21ksoftirqd/123:30:261
13171995823,7cyclictest41-21ksoftirqd/320:15:193
13171995822,8cyclictest41-21ksoftirqd/321:25:023
13169995826,7cyclictest25-21ksoftirqd/123:50:151
13169995822,4cyclictest25-21ksoftirqd/122:50:221
134491570,4ptp4l0-21swapper/219:09:312
1317199574,8cyclictest26811-21idleruntime-cro19:40:013
13171995726,8cyclictest41-21ksoftirqd/322:00:173
1317199572,47cyclictest0-21swapper/321:35:423
13169995720,4cyclictest25-21ksoftirqd/121:25:011
13169995627,8cyclictest25-21ksoftirqd/119:25:141
13169995623,7cyclictest25-21ksoftirqd/120:45:001
13169995618,7cyclictest25-21ksoftirqd/119:40:241
134491550,3ptp4l0-21swapper/222:25:162
134491550,3ptp4l0-21swapper/120:35:161
1317199555,3cyclictest16209-21latency_hist22:45:003
1317199553,4cyclictest0-21swapper/321:15:263
1317199552,10cyclictest41-21ksoftirqd/321:55:013
1317199550,7cyclictest401ktimersoftd/320:40:283
1316999554,8cyclictest25-21ksoftirqd/120:15:281
13169995521,7cyclictest25-21ksoftirqd/120:50:281
134491540,4ptp4l0-21swapper/021:49:560
134491540,3ptp4l0-21swapper/120:55:221
1317199544,10cyclictest41-21ksoftirqd/300:40:003
13170995417,4cyclictest33-21ksoftirqd/200:00:002
1316999544,8cyclictest25-21ksoftirqd/123:05:011
13169995432,9cyclictest25-21ksoftirqd/120:25:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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