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2026-05-06 - 04:08
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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 Wed May 06, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
70232202169,22sleep20-21swapper/219:09:052
69962202169,22sleep00-21swapper/019:08:430
68202202169,22sleep30-21swapper/319:07:093
70172197162,23sleep10-21swapper/119:09:001
2433521700,5sleep1738799cyclictest00:10:251
62562650,6sleep1738799cyclictest22:25:271
139391630,0ptp4l401ktimersoftd/321:55:113
270542610,7sleep3738999cyclictest20:55:243
7388995713,15cyclictest20199-21/usr/sbin/munin00:05:152
137642570,2sleep00-21swapper/020:30:140
7386994842,3cyclictest4093-21cron22:25:000
139391450,1ptp4l0-21swapper/322:52:493
139391420,0ptp4l401ktimersoftd/319:25:233
738899410,3cyclictest12721-21taskset23:48:292
57898410,2rtkit-daemon0-21swapper/121:05:391
139391410,1ptp4l0-21swapper/319:47:153
139391410,1ptp4l0-21swapper/319:47:153
139391410,0ptp4l401ktimersoftd/322:15:293
7389994028,9cyclictest41-21ksoftirqd/323:12:493
7387994035,3cyclictest25-21ksoftirqd/121:39:591
139391400,0ptp4l401ktimersoftd/323:20:133
139391390,1ptp4l401ktimersoftd/323:35:273
139391390,0ptp4l401ktimersoftd/319:40:183
139391390,0ptp4l401ktimersoftd/319:15:223
139391390,0ptp4l401ktimersoftd/319:15:223
7387993834,2cyclictest25-21ksoftirqd/121:20:001
7387993833,3cyclictest25-21ksoftirqd/100:00:001
7387993832,4cyclictest25-21ksoftirqd/120:25:111
738799381,34cyclictest842-21cron23:25:001
7389993730,4cyclictest41-21ksoftirqd/320:05:133
7387993733,3cyclictest25-21ksoftirqd/123:35:001
7387993732,3cyclictest23779-21cron19:45:001
7387993731,4cyclictest25-21ksoftirqd/100:00:201
7386993716,18cyclictest20487-21phc2sys-jitter19:35:230
738699370,2cyclictest121rcu_preempt20:58:230
7388993630,4cyclictest33-21ksoftirqd/222:49:202
7388993630,4cyclictest33-21ksoftirqd/220:11:062
7388993630,4cyclictest33-21ksoftirqd/219:42:262
7388993629,5cyclictest33-21ksoftirqd/220:23:222
7387993631,3cyclictest25-21ksoftirqd/120:35:011
7387993631,3cyclictest25-21ksoftirqd/120:00:181
7387993631,3cyclictest25-21ksoftirqd/100:10:001
7387993630,4cyclictest25-21ksoftirqd/121:24:261
7387993630,4cyclictest25-21ksoftirqd/100:39:111
7387993630,4cyclictest25-21ksoftirqd/100:17:151
7387993629,5cyclictest25-21ksoftirqd/100:22:011
7386993615,18cyclictest31786-21iostat23:20:160
7386993610,23cyclictest449-21dbus-daemon22:40:010
7389993530,3cyclictest41-21ksoftirqd/320:30:113
7389993530,3cyclictest41-21ksoftirqd/300:00:003
7389993529,4cyclictest41-21ksoftirqd/322:58:363
738899352,30cyclictest21402-21latency_hist19:40:002
7387993531,2cyclictest25-21ksoftirqd/119:30:011
7387993531,2cyclictest25-21ksoftirqd/119:25:001
7387993530,3cyclictest25-21ksoftirqd/123:20:001
7387993530,3cyclictest25-21ksoftirqd/123:00:191
7387993530,3cyclictest25-21ksoftirqd/123:00:001
7387993530,3cyclictest25-21ksoftirqd/122:30:131
7387993529,4cyclictest25-21ksoftirqd/122:48:551
7387993529,4cyclictest25-21ksoftirqd/120:37:411
738699358,3cyclictest30257-21head23:15:270
7386993529,4cyclictest9-21ksoftirqd/020:08:150
7386993512,20cyclictest14464-21grep23:50:240
7386993511,21cyclictest4243-21cat00:35:250
7386993510,22cyclictest207-21systemd-journal21:55:260
7389993429,3cyclictest41-21ksoftirqd/300:30:113
7389993428,4cyclictest41-21ksoftirqd/323:25:313
7389993428,4cyclictest41-21ksoftirqd/323:18:373
7389993428,4cyclictest41-21ksoftirqd/323:07:223
7389993428,4cyclictest41-21ksoftirqd/320:24:593
738899343,2cyclictest121rcu_preempt00:18:392
7388993429,3cyclictest33-21ksoftirqd/222:19:512
7388993429,3cyclictest33-21ksoftirqd/219:27:282
7388993429,3cyclictest33-21ksoftirqd/219:20:112
7388993428,4cyclictest33-21ksoftirqd/221:54:512
7388993428,4cyclictest33-21ksoftirqd/219:19:272
7388993428,4cyclictest33-21ksoftirqd/219:19:272
7387993430,2cyclictest25-21ksoftirqd/120:49:591
7387993428,4cyclictest25-21ksoftirqd/122:02:051
7387993428,4cyclictest25-21ksoftirqd/121:57:561
7387993428,4cyclictest25-21ksoftirqd/121:33:401
7387993428,4cyclictest25-21ksoftirqd/119:38:561
7387993428,3cyclictest25-21ksoftirqd/120:20:191
7387993428,3cyclictest25-21ksoftirqd/119:50:001
7387993428,3cyclictest25-21ksoftirqd/119:50:001
7386993428,4cyclictest9-21ksoftirqd/021:17:150
7386993428,4cyclictest9-21ksoftirqd/020:21:540
7386993428,4cyclictest9-21ksoftirqd/020:14:210
7386993414,18cyclictest10651-21fw_packets21:30:150
7386993413,19cyclictest30879-21ptp4l-jitter22:10:230
139391340,0ptp4l401ktimersoftd/322:35:183
7389993327,4cyclictest41-21ksoftirqd/321:30:373
7389993327,4cyclictest41-21ksoftirqd/320:28:003
7389993327,4cyclictest41-21ksoftirqd/300:16:093
738899339,21cyclictest3128-21expr21:15:142
7388993328,3cyclictest33-21ksoftirqd/223:16:192
7388993328,3cyclictest33-21ksoftirqd/220:38:402
7388993327,4cyclictest33-21ksoftirqd/223:55:032
7388993327,4cyclictest33-21ksoftirqd/222:42:502
7388993327,4cyclictest33-21ksoftirqd/221:26:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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