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2026-08-28 - 12:04
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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 100 highest latencies:
System rackdslot3.osadl.org (updated Fri Aug 28, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491208168,22phc2sys0-21swapper/319:05:223
139491208168,22phc2sys0-21swapper/319:05:213
15342207175,22sleep10-21swapper/119:06:121
15342207175,22sleep10-21swapper/119:06:111
17292203169,22sleep20-21swapper/219:08:382
17292203169,22sleep20-21swapper/219:08:382
17022202169,22sleep00-21swapper/019:08:160
17022202169,22sleep00-21swapper/019:08:160
139491164127,13phc2sys0-21swapper/319:10:013
139391940,12ptp4l401ktimersoftd/320:45:183
236322620,2sleep20-21swapper/223:15:182
139391540,0ptp4l401ktimersoftd/323:17:593
139391530,1ptp4l401ktimersoftd/320:37:203
195572480,2sleep00-21swapper/022:00:130
2136994439,3cyclictest29041-21cron00:35:012
2135994338,2cyclictest15255-21cron20:44:591
2134994237,3cyclictest9-21ksoftirqd/019:35:010
2134994237,3cyclictest9-21ksoftirqd/000:40:000
139391420,0ptp4l401ktimersoftd/323:27:103
139391420,0ptp4l401ktimersoftd/300:22:223
213599411,37cyclictest7000-21fschecks_count22:40:151
139391410,0ptp4l401ktimersoftd/322:04:113
139391410,0ptp4l401ktimersoftd/320:52:543
139391410,0ptp4l401ktimersoftd/320:52:543
2135994036,2cyclictest25-21ksoftirqd/120:35:011
2135994032,5cyclictest25-21ksoftirqd/120:35:501
2134994031,6cyclictest9-21ksoftirqd/021:50:000
2134993934,3cyclictest9-21ksoftirqd/022:20:010
2136993833,3cyclictest33-21ksoftirqd/221:25:012
2135993833,3cyclictest25-21ksoftirqd/100:40:001
2135993832,4cyclictest25-21ksoftirqd/123:06:091
2134993833,3cyclictest9-21ksoftirqd/021:55:010
139391380,0ptp4l401ktimersoftd/300:16:113
2136993730,4cyclictest33-21ksoftirqd/222:02:072
2135993731,4cyclictest25-21ksoftirqd/123:27:231
2134993732,3cyclictest9-21ksoftirqd/022:00:000
2134993731,4cyclictest9-21ksoftirqd/021:14:590
2136993630,4cyclictest33-21ksoftirqd/219:45:562
2136993630,3cyclictest33-21ksoftirqd/221:44:592
2135993630,4cyclictest25-21ksoftirqd/121:10:111
2135993630,4cyclictest25-21ksoftirqd/119:43:141
2135993629,5cyclictest25-21ksoftirqd/123:30:481
2135993629,5cyclictest25-21ksoftirqd/122:14:581
2135993629,4cyclictest25-21ksoftirqd/121:57:051
2135993628,5cyclictest25-21ksoftirqd/121:24:591
213499365,5cyclictest121rcu_preempt23:15:180
2134993632,3cyclictest9-21ksoftirqd/023:40:000
2134993631,2cyclictest9-21ksoftirqd/022:45:000
2134993631,2cyclictest9-21ksoftirqd/019:25:010
2134993630,4cyclictest9-21ksoftirqd/023:53:460
2134993630,4cyclictest9-21ksoftirqd/023:53:460
2134993630,3cyclictest9-21ksoftirqd/021:30:010
2137993530,3cyclictest41-21ksoftirqd/320:40:203
2137993529,4cyclictest41-21ksoftirqd/323:39:593
2137993529,4cyclictest41-21ksoftirqd/322:48:063
2137993529,4cyclictest41-21ksoftirqd/320:59:183
2137993529,4cyclictest41-21ksoftirqd/320:11:323
2136993529,4cyclictest33-21ksoftirqd/223:09:592
2136993529,3cyclictest33-21ksoftirqd/221:31:122
2136993528,4cyclictest33-21ksoftirqd/220:19:302
213599353,2cyclictest121rcu_preempt20:00:001
2135993530,3cyclictest25-21ksoftirqd/122:50:001
2135993529,4cyclictest25-21ksoftirqd/123:58:441
2135993529,4cyclictest25-21ksoftirqd/123:23:581
2135993529,4cyclictest25-21ksoftirqd/123:23:581
2135993529,4cyclictest25-21ksoftirqd/123:11:141
2135993529,4cyclictest25-21ksoftirqd/122:53:091
2135993529,4cyclictest25-21ksoftirqd/120:54:431
2135993529,4cyclictest25-21ksoftirqd/120:54:431
2135993529,4cyclictest25-21ksoftirqd/120:04:371
2135993529,4cyclictest25-21ksoftirqd/119:20:561
2135993529,3cyclictest25-21ksoftirqd/119:25:171
2135993528,5cyclictest25-21ksoftirqd/122:19:511
2134993531,3cyclictest9-21ksoftirqd/000:10:130
2134993530,3cyclictest9-21ksoftirqd/000:00:000
2134993528,4cyclictest9-21ksoftirqd/023:40:090
139391350,0ptp4l401ktimersoftd/323:21:563
139391350,0ptp4l401ktimersoftd/323:21:563
2137993429,3cyclictest41-21ksoftirqd/322:31:423
2137993428,4cyclictest41-21ksoftirqd/323:51:293
2137993428,4cyclictest41-21ksoftirqd/323:51:283
2137993428,4cyclictest41-21ksoftirqd/321:50:053
2136993428,4cyclictest33-21ksoftirqd/222:20:162
2136993428,4cyclictest33-21ksoftirqd/220:31:002
2135993429,3cyclictest25-21ksoftirqd/120:05:221
2135993429,3cyclictest25-21ksoftirqd/119:38:291
2135993429,3cyclictest25-21ksoftirqd/100:34:231
2135993428,4cyclictest25-21ksoftirqd/123:04:081
2135993428,4cyclictest25-21ksoftirqd/121:48:221
2135993428,4cyclictest25-21ksoftirqd/121:25:351
2135993428,4cyclictest25-21ksoftirqd/120:20:291
2135993428,4cyclictest25-21ksoftirqd/119:48:541
2135993428,4cyclictest25-21ksoftirqd/119:15:301
2135993428,4cyclictest25-21ksoftirqd/119:12:581
2135993427,5cyclictest25-21ksoftirqd/100:15:291
2134993430,2cyclictest9-21ksoftirqd/000:10:010
2134993429,3cyclictest9-21ksoftirqd/023:20:250
2134993429,3cyclictest9-21ksoftirqd/023:20:250
2134993429,3cyclictest9-21ksoftirqd/022:10:130
2134993429,3cyclictest9-21ksoftirqd/020:46:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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