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2025-12-05 - 07:13
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Fri Dec 05, 2025 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
427921660,7sleep02022199cyclictest23:10:330
1513221510,6sleep32022499cyclictest22:25:263
2022499722,29cyclictest0-21swapper/321:20:163
2847191690,4ptp4l7327-21diskstats22:10:171
2022199675,23cyclictest2847191ptp4l23:00:160
20224996528,7cyclictest41-21ksoftirqd/320:55:023
2847191640,3ptp4l0-21swapper/123:20:191
20221996313,20cyclictest28696-21mailstats20:35:270
2022199631,26cyclictest22392-21cat19:15:000
20221996310,18cyclictest2656-21date23:10:000
2022199630,25cyclictest1299-21runrttasks20:04:020
2847191620,5ptp4l0-21swapper/000:10:270
2847191620,3ptp4l0-21swapper/200:30:312
2847191610,4ptp4l0-21swapper/021:22:320
2022199611,35cyclictest31745-21seq20:44:220
2022199610,25cyclictest26996-21seq20:33:470
2022199610,24cyclictest2942-21if_err_enp4s022:00:170
2847191600,3ptp4l0-21swapper/120:25:191
2022199601,24cyclictest12242-21seq00:39:230
2022199600,29cyclictest13695-21runrttasks22:24:510
2022199600,25cyclictest9273-21seq23:22:520
2022199600,25cyclictest26767-21seq19:22:350
2847191590,3ptp4l0-21swapper/122:42:391
2847191590,3ptp4l0-21swapper/121:15:281
2022199593,22cyclictest0-21swapper/000:24:450
2022199591,27cyclictest10503-21seq19:55:320
2022199590,30cyclictest28120-21runrttasks00:04:070
2022199590,27cyclictest22790-21seq22:42:410
2022199590,26cyclictest9963-21seq00:34:450
2022199590,26cyclictest8974-21taskset22:13:470
2847191580,4ptp4l0-21swapper/220:25:012
2847191580,4ptp4l0-21swapper/021:40:160
20224995827,6cyclictest41-21ksoftirqd/321:35:283
2022199585,23cyclictest23358-21taskset23:52:400
2022199581,26cyclictest30479-21taskset00:06:320
2022199581,25cyclictest22702-21seq21:33:280
2022199580,26cyclictest6106-21seq20:56:370
2022199580,26cyclictest25750-21seq23:58:390
2022199580,26cyclictest15809-21seq21:19:240
2847191570,4ptp4l0-21swapper/220:01:532
2847191570,4ptp4l0-21swapper/100:21:391
2847191570,3ptp4l0-21swapper/220:57:332
2847191570,15ptp4l0-21swapper/219:48:252
20224995729,7cyclictest41-21ksoftirqd/321:40:243
2022199571,26cyclictest29121-21seq19:27:240
2022199571,26cyclictest29121-21seq19:27:240
2022199571,25cyclictest28811-21apache220:21:370
2022199570,28cyclictest25079-21runrttasks22:47:260
2022199570,26cyclictest2011-21seq21:58:520
2847191560,4ptp4l0-21swapper/122:32:391
2847191560,3ptp4l0-21swapper/220:10:052
2847191560,3ptp4l0-21swapper/123:10:461
20224995627,7cyclictest41-21ksoftirqd/322:25:003
20224995625,7cyclictest41-21ksoftirqd/321:15:173
20224995625,7cyclictest41-21ksoftirqd/319:35:173
20224995618,8cyclictest41-21ksoftirqd/323:35:263
2022199563,21cyclictest0-21swapper/021:46:590
2022199561,18cyclictest2847191ptp4l22:55:190
2022199560,27cyclictest8582-21seq21:00:430
2022199560,25cyclictest21155-21taskset23:48:590
2847191550,4ptp4l0-21swapper/200:38:222
2847191550,3ptp4l0-21swapper/100:09:381
20224995527,8cyclictest41-21ksoftirqd/321:25:173
20224995527,7cyclictest41-21ksoftirqd/300:35:313
20224995527,4cyclictest41-21ksoftirqd/322:35:283
20224995526,9cyclictest41-21ksoftirqd/323:05:183
20224995523,7cyclictest41-21ksoftirqd/320:40:223
2022199553,22cyclictest0-21swapper/020:27:250
2022199552,28cyclictest11201-21seq21:09:330
2022199550,27cyclictest7379-21seq00:26:220
2022199550,27cyclictest24886-21seq21:36:570
2847191540,4ptp4l28850-21apache222:22:291
2847191540,4ptp4l0-21swapper/121:40:521
2847191540,3ptp4l0-21swapper/122:45:151
2847191540,3ptp4l0-21swapper/120:22:361
2022499542,27cyclictest0-21swapper/300:07:343
2022199542,23cyclictest0-21swapper/021:27:040
2022199542,21cyclictest0-21swapper/022:38:400
2847191530,5ptp4l33-21ksoftirqd/223:21:342
2847191530,4ptp4l0-21swapper/100:26:271
2847191530,3ptp4l0-21swapper/200:18:582
2847191530,11ptp4l17868-21apt-get19:05:103
20224995325,8cyclictest41-21ksoftirqd/322:10:153
20224995325,7cyclictest41-21ksoftirqd/320:15:273
20224995324,8cyclictest41-21ksoftirqd/323:45:023
20224995321,9cyclictest41-21ksoftirqd/319:25:253
20224995321,9cyclictest41-21ksoftirqd/319:25:253
20224995320,7cyclictest41-21ksoftirqd/300:20:203
2022199532,21cyclictest0-21swapper/019:16:100
2022199532,20cyclictest0-21swapper/020:17:300
2847191520,4ptp4l0-21swapper/222:10:192
2847191520,3ptp4l0-21swapper/319:41:223
2847191520,3ptp4l0-21swapper/119:27:401
2847191520,3ptp4l0-21swapper/119:27:401
20224995222,8cyclictest41-21ksoftirqd/319:50:183
2847191510,4ptp4l0-21swapper/122:25:091
2847191510,3ptp4l0-21swapper/321:04:343
2847191510,3ptp4l0-21swapper/121:39:011
20224995127,8cyclictest41-21ksoftirqd/300:10:223
20224995126,6cyclictest41-21ksoftirqd/319:30:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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