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2026-04-04 - 12:25
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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 rackdslot1.osadl.org (updated Sat Apr 04, 2026 00:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1632821440,2sleep22080299cyclictest23:35:222
1950621370,6sleep22080299cyclictest22:34:592
2080299741,70cyclictest0-21swapper/223:30:282
2080299712,67cyclictest0-21swapper/219:45:282
20801996929,10cyclictest25-21ksoftirqd/123:35:211
20801996927,10cyclictest25-21ksoftirqd/123:55:241
20800996815,11cyclictest21773-21taskset23:46:230
20801996730,10cyclictest25-21ksoftirqd/100:10:221
20800996516,11cyclictest30228-21taskset20:38:190
134491650,3ptp4l13858-21ntp_states22:20:233
2080099649,11cyclictest22891-21awk21:30:250
20800996416,9cyclictest16120-21taskset20:07:120
20800996415,11cyclictest28554-21taskset22:54:360
20800996415,11cyclictest25320-21taskset20:27:010
20800996411,11cyclictest24176-21cut19:15:210
243042630,4sleep224309-21irqrtprio20:25:192
20801996330,4cyclictest25-21ksoftirqd/121:50:111
20800996315,12cyclictest26116-21taskset22:47:460
20800996315,10cyclictest11565-21seq19:58:010
20801996225,4cyclictest25-21ksoftirqd/119:50:281
20800996216,9cyclictest14174-21seq21:12:060
20800996215,8cyclictest24138-21taskset23:52:200
20800996214,11cyclictest2036-21seq19:37:550
20801996126,8cyclictest25-21ksoftirqd/120:00:011
20801996023,8cyclictest25-21ksoftirqd/123:15:141
2080199601,7cyclictest121rcu_preempt19:38:111
2080099606,11cyclictest11973-21switchtime23:25:250
20800996015,10cyclictest27571-21seq19:23:190
20800996014,10cyclictest12706-21taskset00:37:160
20800996010,15cyclictest1-21systemd22:30:240
20801995927,8cyclictest25-21ksoftirqd/100:05:151
20801995923,8cyclictest25-21ksoftirqd/122:30:131
2080099599,10cyclictest14781-21turbostat.cron22:24:550
2080099596,11cyclictest7267-21tr23:15:220
2080099595,10cyclictest9753-21cat23:20:250
20800995915,17cyclictest12354-21taskset22:18:320
20800995915,11cyclictest31375-21taskset00:08:520
20800995914,9cyclictest11771-21taskset21:05:490
20800995914,9cyclictest11771-21taskset21:05:490
20800995914,12cyclictest10566-21runrttasks00:34:120
20801995829,9cyclictest25-21ksoftirqd/122:00:121
2080099587,8cyclictest25044-21hwlatdetect23:55:150
20800995814,12cyclictest9624-21taskset21:02:420
20800995811,10cyclictest3511-21/usr/sbin/munin19:40:220
134491580,4ptp4l26034-21/usr/sbin/munin19:20:161
134491580,3ptp4l0-21swapper/022:01:270
20801995724,9cyclictest25-21ksoftirqd/121:25:281
20801995723,9cyclictest25-21ksoftirqd/120:20:011
20801995720,8cyclictest25-21ksoftirqd/123:40:221
20800995715,9cyclictest5690-21runrttasks00:20:410
164382570,4sleep30-21swapper/323:35:233
134491570,4ptp4l0-21swapper/322:36:153
20801995629,3cyclictest25-21ksoftirqd/119:25:161
20801995628,10cyclictest25-21ksoftirqd/121:20:211
20801995623,7cyclictest25-21ksoftirqd/100:25:161
2080099567,9cyclictest0-21swapper/020:00:230
20800995614,9cyclictest7571-21seq22:06:140
20800995614,11cyclictest9048-21taskset19:52:530
20800995613,11cyclictest5382-21taskset23:13:230
134491560,3ptp4l0-21swapper/321:50:253
20801995527,9cyclictest25-21ksoftirqd/120:05:151
20801995518,9cyclictest25-21ksoftirqd/122:05:221
2080199550,8cyclictest25-21ksoftirqd/119:10:141
2080099559,42cyclictest746-21/usr/sbin/munin20:45:110
2080099558,11cyclictest1019-21/usr/sbin/munin23:05:160
20800995514,16cyclictest16499-21taskset21:17:230
20800995514,10cyclictest1282-21taskset00:14:180
20800995513,16cyclictest212-21systemd-journal22:28:120
20800995511,11cyclictest1317-21runrttasks19:27:280
20800995511,10cyclictest0-21swapper/023:01:250
20800995510,10cyclictest6651-21ps20:55:230
134491550,4ptp4l0-21swapper/300:07:543
134491550,3ptp4l0-21swapper/122:48:561
2080199545,6cyclictest25-21ksoftirqd/100:30:131
2080099543,7cyclictest134491ptp4l23:45:010
20800995413,10cyclictest9856-21taskset22:11:050
20800995410,40cyclictest31192-21/usr/sbin/munin21:50:130
20800995410,11cyclictest13906-21taskset23:30:210
134491540,5ptp4l0-21swapper/219:21:342
134491540,4ptp4l0-21swapper/321:55:513
134491540,3ptp4l0-21swapper/323:02:013
134491540,3ptp4l0-21swapper/122:26:341
2080099538,42cyclictest27269-21ntpq21:40:220
2080099535,11cyclictest31826-21runrttasks19:30:260
20800995310,11cyclictest1317-21runrttasks00:18:250
134491530,4ptp4l0-21swapper/322:02:313
134491530,4ptp4l0-21swapper/222:17:572
2080199523,7cyclictest25-21ksoftirqd/120:35:001
2080099529,9cyclictest0-21swapper/019:14:570
20800995213,10cyclictest18663-21taskset21:20:310
134491520,3ptp4l0-21swapper/223:51:322
2080199515,9cyclictest25-21ksoftirqd/120:05:011
20801995133,9cyclictest25-21ksoftirqd/119:15:271
2080199510,10cyclictest25-21ksoftirqd/121:45:011
2080099518,10cyclictest0-21swapper/019:48:140
134491510,5ptp4l0-21swapper/120:25:061
134491510,4ptp4l1317-21runrttasks19:08:301
134491510,4ptp4l0-21swapper/321:02:123
134491510,4ptp4l0-21swapper/300:13:203
2080199505,8cyclictest25-21ksoftirqd/123:05:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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