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2026-06-18 - 03:42
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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 Thu Jun 18, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24042740,1sleep32405-21/usr/sbin/munin23:50:293
31950997325,4cyclictest25-21ksoftirqd/120:21:141
31950996925,4cyclictest25-21ksoftirqd/119:54:221
134491690,5ptp4l41-21ksoftirqd/320:42:483
31950996822,8cyclictest25-21ksoftirqd/121:20:001
134491660,9ptp4l0-21swapper/023:25:310
31951996425,9cyclictest33-21ksoftirqd/219:13:392
31951996329,5cyclictest33-21ksoftirqd/200:04:002
31951996327,3cyclictest33-21ksoftirqd/200:10:172
31950996319,8cyclictest25-21ksoftirqd/119:20:171
134491630,3ptp4l18848-21apt-get22:10:133
31950996222,8cyclictest25-21ksoftirqd/121:21:561
31950996120,4cyclictest25-21ksoftirqd/120:47:501
31950996026,3cyclictest25-21ksoftirqd/119:49:541
31951995927,7cyclictest33-21ksoftirqd/221:30:162
31951995922,4cyclictest33-21ksoftirqd/221:20:002
31950995928,3cyclictest25-21ksoftirqd/123:22:121
31950995921,7cyclictest25-21ksoftirqd/100:15:481
31950995920,4cyclictest25-21ksoftirqd/120:09:151
31950995914,8cyclictest25-21ksoftirqd/122:50:141
31951995827,7cyclictest33-21ksoftirqd/221:06:072
3195099587,6cyclictest25-21ksoftirqd/121:10:271
3195099587,6cyclictest25-21ksoftirqd/121:10:271
31950995828,7cyclictest25-21ksoftirqd/123:00:001
31950995824,9cyclictest25-21ksoftirqd/123:05:201
31950995817,8cyclictest25-21ksoftirqd/123:01:251
134491580,5ptp4l9342-21tr21:50:120
134491580,4ptp4l0-21swapper/020:00:230
31951995725,6cyclictest33-21ksoftirqd/223:35:222
31951995722,6cyclictest33-21ksoftirqd/221:10:252
31951995722,6cyclictest33-21ksoftirqd/221:10:252
31951995718,10cyclictest33-21ksoftirqd/219:36:582
31950995729,3cyclictest25-21ksoftirqd/119:33:491
31950995720,9cyclictest25-21ksoftirqd/122:04:591
134491570,3ptp4l0-21swapper/200:30:112
134491570,15ptp4l31801-21ls23:45:223
134491570,15ptp4l31801-21ls23:45:223
31951995629,2cyclictest33-21ksoftirqd/219:25:002
31951995624,7cyclictest33-21ksoftirqd/222:14:122
31951995624,6cyclictest33-21ksoftirqd/221:50:002
31951995624,6cyclictest33-21ksoftirqd/221:50:002
31951995622,9cyclictest33-21ksoftirqd/219:47:572
31951995620,9cyclictest33-21ksoftirqd/220:48:272
31951995618,6cyclictest33-21ksoftirqd/220:25:082
31950995623,7cyclictest25-21ksoftirqd/100:00:141
31950995622,5cyclictest25-21ksoftirqd/100:32:521
31950995611,7cyclictest25-21ksoftirqd/122:25:231
134491560,4ptp4l27475-21chrt21:20:010
31951995526,4cyclictest33-21ksoftirqd/220:18:192
31951995523,7cyclictest33-21ksoftirqd/221:20:142
31951995523,7cyclictest33-21ksoftirqd/219:58:082
31951995523,3cyclictest33-21ksoftirqd/222:58:062
31951995522,8cyclictest33-21ksoftirqd/219:32:432
31951995522,7cyclictest33-21ksoftirqd/222:41:122
31951995522,5cyclictest33-21ksoftirqd/219:40:232
31951995522,4cyclictest33-21ksoftirqd/223:50:272
31951995519,7cyclictest33-21ksoftirqd/220:11:082
31950995528,4cyclictest25-21ksoftirqd/119:37:081
31950995526,8cyclictest25-21ksoftirqd/120:29:231
31950995517,7cyclictest25-21ksoftirqd/121:42:341
134491550,4ptp4l6721-21apt20:35:121
134491550,4ptp4l6721-21apt20:35:121
31951995423,7cyclictest33-21ksoftirqd/223:47:482
31951995423,7cyclictest33-21ksoftirqd/223:47:472
31951995422,7cyclictest33-21ksoftirqd/222:54:522
31951995422,7cyclictest33-21ksoftirqd/222:15:412
31951995422,7cyclictest33-21ksoftirqd/222:15:412
31951995421,5cyclictest33-21ksoftirqd/200:05:292
31951995420,4cyclictest33-21ksoftirqd/221:53:242
31950995423,8cyclictest25-21ksoftirqd/123:47:511
31950995423,8cyclictest25-21ksoftirqd/123:47:501
31950995420,6cyclictest25-21ksoftirqd/122:50:001
31950995420,6cyclictest25-21ksoftirqd/122:50:001
31950995412,7cyclictest25-21ksoftirqd/123:40:371
134491540,4ptp4l0-21swapper/021:45:150
134491540,4ptp4l0-21swapper/021:45:150
31951995333,11cyclictest33-21ksoftirqd/221:01:182
31951995324,7cyclictest33-21ksoftirqd/223:43:352
31951995320,7cyclictest33-21ksoftirqd/223:19:522
31951995320,7cyclictest33-21ksoftirqd/223:19:512
31951995320,6cyclictest33-21ksoftirqd/223:10:152
31951995319,6cyclictest33-21ksoftirqd/223:55:262
31951995318,4cyclictest33-21ksoftirqd/223:30:012
31951995318,4cyclictest33-21ksoftirqd/221:38:012
31951995315,6cyclictest33-21ksoftirqd/223:05:232
31950995319,9cyclictest25-21ksoftirqd/120:15:111
134491530,5ptp4l0-21swapper/023:35:130
31951995230,10cyclictest33-21ksoftirqd/220:05:002
31951995221,7cyclictest33-21ksoftirqd/222:29:252
31951995220,4cyclictest33-21ksoftirqd/221:26:102
31951995220,4cyclictest33-21ksoftirqd/219:29:592
31951995218,6cyclictest33-21ksoftirqd/220:55:202
31951995214,6cyclictest33-21ksoftirqd/223:20:142
31950995230,4cyclictest25-21ksoftirqd/122:30:081
31950995218,5cyclictest25-21ksoftirqd/120:50:261
31950995210,4cyclictest25-21ksoftirqd/121:30:011
134491520,4ptp4l0-21swapper/323:11:463
134491520,3ptp4l0-21swapper/022:40:290
31951995120,7cyclictest33-21ksoftirqd/220:21:432
31951995119,3cyclictest33-21ksoftirqd/222:35:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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