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2026-05-21 - 21:32
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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 May 21, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
245742760,3sleep30-21swapper/312:10:003
1440499740,3cyclictest14191-21phc2sys10:35:240
14406997034,6cyclictest33-21ksoftirqd/207:20:002
92332670,6sleep30-21swapper/309:15:263
14406996733,7cyclictest33-21ksoftirqd/208:50:002
14406996635,5cyclictest33-21ksoftirqd/211:15:212
14406996634,4cyclictest33-21ksoftirqd/208:35:132
14406996531,4cyclictest33-21ksoftirqd/211:05:152
14406996529,6cyclictest33-21ksoftirqd/208:30:002
14406996432,6cyclictest33-21ksoftirqd/211:30:002
14406996429,6cyclictest33-21ksoftirqd/209:05:002
14406996427,11cyclictest33-21ksoftirqd/211:45:002
14406996427,11cyclictest33-21ksoftirqd/211:45:002
14406996426,4cyclictest33-21ksoftirqd/207:55:272
1440499640,2cyclictest197542sleep011:57:540
1440699638,7cyclictest33-21ksoftirqd/209:20:002
14406996332,7cyclictest33-21ksoftirqd/210:45:122
14406996328,4cyclictest33-21ksoftirqd/207:45:002
14407996255,6cyclictest0-21swapper/309:35:003
14406996233,7cyclictest33-21ksoftirqd/212:00:002
14406996233,4cyclictest33-21ksoftirqd/209:40:252
14406996228,4cyclictest33-21ksoftirqd/211:30:122
14406996130,5cyclictest33-21ksoftirqd/212:30:282
14406996130,4cyclictest33-21ksoftirqd/210:05:152
14406996130,4cyclictest33-21ksoftirqd/208:40:272
14406996128,6cyclictest33-21ksoftirqd/212:20:202
14406996128,4cyclictest33-21ksoftirqd/211:00:242
14406996122,4cyclictest33-21ksoftirqd/210:10:152
134491610,4ptp4l0-21swapper/207:33:062
134491610,4ptp4l0-21swapper/011:15:560
14406996031,9cyclictest33-21ksoftirqd/209:35:212
14406996031,3cyclictest33-21ksoftirqd/209:25:272
14406996029,5cyclictest33-21ksoftirqd/208:17:002
14406996028,5cyclictest33-21ksoftirqd/211:50:252
1440499600,3cyclictest134491ptp4l08:45:160
1440799596,6cyclictest21618-21sed10:50:293
1440799596,13cyclictest0-21swapper/310:25:143
14407995912,7cyclictest41-21ksoftirqd/308:00:003
1440699597,3cyclictest33-21ksoftirqd/207:20:132
14406995928,6cyclictest33-21ksoftirqd/207:45:252
14406995928,6cyclictest33-21ksoftirqd/207:45:252
14406995927,4cyclictest33-21ksoftirqd/211:35:152
14406995926,5cyclictest33-21ksoftirqd/208:50:132
14406995926,4cyclictest33-21ksoftirqd/210:40:112
14406995926,4cyclictest33-21ksoftirqd/210:40:112
14406995923,6cyclictest33-21ksoftirqd/208:10:252
14406995923,4cyclictest33-21ksoftirqd/210:05:002
14406995921,4cyclictest33-21ksoftirqd/212:05:202
14406995920,4cyclictest33-21ksoftirqd/209:20:252
134491590,3ptp4l0-21swapper/111:00:241
1440799587,7cyclictest673-21sed11:15:273
1440799587,6cyclictest0-21swapper/308:40:223
1440799580,18cyclictest31563-21sed10:05:153
14406995833,7cyclictest33-21ksoftirqd/209:50:172
14406995829,7cyclictest33-21ksoftirqd/210:40:002
14406995828,4cyclictest33-21ksoftirqd/212:25:182
14406995828,4cyclictest33-21ksoftirqd/207:25:272
14406995827,3cyclictest33-21ksoftirqd/209:55:132
14406995826,9cyclictest33-21ksoftirqd/210:20:012
14406995826,6cyclictest33-21ksoftirqd/212:00:142
134491580,4ptp4l0-21swapper/109:35:231
14406995732,7cyclictest33-21ksoftirqd/208:00:262
14406995730,4cyclictest33-21ksoftirqd/207:40:002
14406995725,5cyclictest33-21ksoftirqd/208:05:192
14406995724,7cyclictest33-21ksoftirqd/212:35:132
14406995724,7cyclictest33-21ksoftirqd/211:10:162
14406995724,7cyclictest33-21ksoftirqd/211:10:162
14406995724,6cyclictest33-21ksoftirqd/207:50:282
14406995724,5cyclictest33-21ksoftirqd/212:15:202
14406995724,4cyclictest33-21ksoftirqd/211:45:212
134491570,3ptp4l0-21swapper/010:00:320
134491570,3ptp4l0-21swapper/008:35:300
134491570,2ptp4l31528-21iostat08:55:171
1440799563,7cyclictest41-21ksoftirqd/311:30:253
14407995615,5cyclictest41-21ksoftirqd/312:30:133
14406995625,4cyclictest33-21ksoftirqd/208:55:242
14406995623,3cyclictest33-21ksoftirqd/210:25:142
134491560,5ptp4l0-21swapper/007:09:420
134491560,4ptp4l0-21swapper/308:56:093
134491560,4ptp4l0-21swapper/110:37:431
134491560,3ptp4l0-21swapper/011:25:210
134491560,3ptp4l0-21swapper/010:21:350
134491560,3ptp4l0-21swapper/007:45:130
134491560,3ptp4l0-21swapper/007:45:130
14406995526,4cyclictest33-21ksoftirqd/209:30:182
134491550,4ptp4l0-21swapper/210:30:252
134491550,4ptp4l0-21swapper/112:26:441
134491550,4ptp4l0-21swapper/107:38:341
134491550,4ptp4l0-21swapper/107:11:161
134491550,25ptp4l9-21ksoftirqd/008:19:420
1440799545,7cyclictest19733-21grep09:40:113
1440799545,11cyclictest0-21swapper/311:45:243
1440799541,12cyclictest18493-21sed08:25:273
1440699546,3cyclictest33-21ksoftirqd/209:45:162
14406995438,6cyclictest33-21ksoftirqd/211:00:002
1440699543,3cyclictest33-21ksoftirqd/207:10:262
134491540,4ptp4l0-21swapper/111:27:091
134491540,4ptp4l0-21swapper/109:32:031
134491540,4ptp4l0-21swapper/109:27:031
134491540,4ptp4l0-21swapper/108:47:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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