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2026-03-16 - 01:45
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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 Sun Mar 15, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1617421540,6sleep33032199cyclictest12:25:233
1617421540,6sleep33032199cyclictest12:25:233
134491680,28ptp4l16381-21users11:15:270
134491640,18ptp4l0-21swapper/110:25:231
134491630,3ptp4l27297-21irqstats11:40:202
30321996225,9cyclictest41-21ksoftirqd/312:05:203
134491620,4ptp4l0-21swapper/010:10:250
134491620,19ptp4l31894-21irqstats11:50:180
30321996027,4cyclictest41-21ksoftirqd/308:15:223
3032199602,31cyclictest0-21swapper/309:11:433
134491600,4ptp4l0-21swapper/207:25:112
134491600,4ptp4l0-21swapper/008:55:120
134491590,4ptp4l0-21swapper/109:55:251
134491580,5ptp4l0-21swapper/207:07:242
134491580,4ptp4l0-21swapper/210:29:562
134491580,4ptp4l0-21swapper/012:25:160
134491580,4ptp4l0-21swapper/012:25:160
134491580,3ptp4l0-21swapper/209:11:072
30321995719,9cyclictest41-21ksoftirqd/307:45:233
3032199571,12cyclictest0-21swapper/308:25:213
134491570,4ptp4l0-21swapper/109:49:561
134491570,3ptp4l0-21swapper/209:40:212
134491560,4ptp4l0-21swapper/210:45:282
134491560,3ptp4l6414-21phc2sys09:45:230
134491560,3ptp4l0-21swapper/011:00:240
3032199554,11cyclictest0-21swapper/312:23:213
3032199552,31cyclictest0-21swapper/307:57:503
134491550,3ptp4l0-21swapper/112:33:221
3032199542,34cyclictest0-21swapper/308:31:023
3032199542,33cyclictest0-21swapper/311:32:123
134491540,4ptp4l0-21swapper/211:12:592
134491540,4ptp4l0-21swapper/111:16:111
134491540,17ptp4l0-21swapper/110:30:211
3032199533,6cyclictest41-21ksoftirqd/309:30:153
3032199533,6cyclictest0-21swapper/309:07:443
3032199532,11cyclictest0-21swapper/312:12:423
3032199532,11cyclictest0-21swapper/308:00:183
134491530,4ptp4l0-21swapper/210:06:282
134491530,10ptp4l0-21swapper/009:56:370
3032199524,6cyclictest0-21swapper/311:57:423
3032199523,6cyclictest0-21swapper/311:25:133
3032199523,6cyclictest0-21swapper/307:27:483
30321995230,3cyclictest41-21ksoftirqd/311:10:273
3032199522,30cyclictest0-21swapper/309:57:233
134491520,4ptp4l0-21swapper/207:13:502
134491520,4ptp4l0-21swapper/112:04:361
134491520,4ptp4l0-21swapper/011:25:340
134491520,4ptp4l0-21swapper/010:20:040
134491520,3ptp4l0-21swapper/109:50:221
134491520,3ptp4l0-21swapper/109:05:221
134491520,12ptp4l0-21swapper/107:51:061
3032199513,6cyclictest0-21swapper/308:57:413
3032199512,6cyclictest0-21swapper/310:00:233
3032199511,6cyclictest0-21swapper/308:45:213
3032199510,8cyclictest41-21ksoftirqd/310:40:183
134491510,4ptp4l0-21swapper/109:41:281
134491510,4ptp4l0-21swapper/012:12:170
134491510,4ptp4l0-21swapper/009:03:260
134491510,4ptp4l0-21swapper/009:03:260
134491510,4ptp4l0-21swapper/008:27:060
134491510,3ptp4l0-21swapper/211:34:212
3032199504,6cyclictest0-21swapper/310:59:243
3032199504,6cyclictest0-21swapper/310:59:243
3032199503,6cyclictest0-21swapper/310:46:443
3032199502,8cyclictest0-21swapper/310:05:223
3032199502,7cyclictest0-21swapper/309:28:073
3032199502,7cyclictest0-21swapper/308:37:143
3032199502,6cyclictest0-21swapper/307:20:213
3032199502,5cyclictest0-21swapper/312:32:033
3032199501,6cyclictest0-21swapper/310:11:023
3032199501,11cyclictest0-21swapper/310:50:233
3032199500,7cyclictest41-21ksoftirqd/308:50:213
134491500,5ptp4l0-21swapper/107:05:131
134491500,4ptp4l0-21swapper/110:17:231
134491500,4ptp4l0-21swapper/108:22:171
134491500,4ptp4l0-21swapper/012:36:020
134491500,3ptp4l0-21swapper/109:23:081
134491500,15ptp4l0-21swapper/009:21:370
3032199494,6cyclictest0-21swapper/307:40:433
3032199493,6cyclictest0-21swapper/312:18:393
3032199493,6cyclictest0-21swapper/309:51:083
3032199492,7cyclictest0-21swapper/311:35:263
3032199492,6cyclictest0-21swapper/308:24:473
3032199492,6cyclictest0-21swapper/307:35:293
3032199490,6cyclictest41-21ksoftirqd/308:10:003
3032199490,6cyclictest41-21ksoftirqd/307:15:273
134491490,5ptp4l0-21swapper/307:09:593
134491490,4ptp4l0-21swapper/112:36:381
134491490,4ptp4l0-21swapper/012:22:580
134491490,4ptp4l0-21swapper/012:18:530
134491490,4ptp4l0-21swapper/011:58:330
134491490,3ptp4l0-21swapper/107:30:291
134491490,3ptp4l0-21swapper/007:51:210
134491490,10ptp4l28187-21/usr/sbin/munin07:05:140
3032199484,8cyclictest41-21ksoftirqd/310:40:003
3032199483,6cyclictest0-21swapper/310:18:013
134491480,3ptp4l0-21swapper/007:33:320
3032199475,8cyclictest41-21ksoftirqd/309:00:163
3032199475,8cyclictest41-21ksoftirqd/309:00:163
3032199474,6cyclictest0-21swapper/309:46:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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