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2026-08-17 - 21:46
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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 Mon Aug 17, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2266321760,5sleep21685399cyclictest07:20:262
134491920,3ptp4l5656-21chrt09:02:352
18992730,3sleep11906-21cpuspeed_turbos11:15:131
16854996456,5cyclictest32114-21latency_hist12:20:003
134491640,4ptp4l0-21swapper/109:45:211
1685499617,7cyclictest0-21swapper/308:00:233
134491610,4ptp4l2884-21ls10:05:232
134491600,4ptp4l20849-21users07:15:290
1685499587,7cyclictest0-21swapper/308:50:263
134491580,5ptp4l0-21swapper/207:06:162
134491580,3ptp4l33-21ksoftirqd/212:35:182
134491580,3ptp4l0-21swapper/207:35:412
1685499567,6cyclictest0-21swapper/310:21:543
1685499566,7cyclictest0-21swapper/307:20:173
1685499566,6cyclictest0-21swapper/311:25:233
1685499566,6cyclictest0-21swapper/311:25:233
134491560,3ptp4l0-21swapper/309:55:273
134491560,3ptp4l0-21swapper/109:09:181
134491560,14ptp4l0-21swapper/108:25:271
134491560,12ptp4l14521-21apt-get07:05:133
195692550,4sleep21685399cyclictest07:15:172
1685499558,6cyclictest0-21swapper/308:10:173
1685499557,5cyclictest0-21swapper/308:40:303
134491550,4ptp4l0-21swapper/108:17:291
134491550,3ptp4l0-21swapper/212:05:202
134491550,3ptp4l0-21swapper/211:22:462
134491550,3ptp4l0-21swapper/107:30:241
1685499549,7cyclictest0-21swapper/308:37:123
1685499547,6cyclictest0-21swapper/310:15:203
1685499546,10cyclictest0-21swapper/310:00:263
134491540,4ptp4l0-21swapper/110:42:161
134491540,4ptp4l0-21swapper/108:58:351
134491540,3ptp4l0-21swapper/010:55:220
134491540,12ptp4l0-21swapper/108:40:251
1685499537,7cyclictest0-21swapper/309:30:173
1685499535,15cyclictest22122-21cat09:40:003
134491530,4ptp4l0-21swapper/210:21:552
134491530,4ptp4l0-21swapper/208:40:592
134491530,4ptp4l0-21swapper/109:50:001
134491530,4ptp4l0-21swapper/109:49:591
134491530,4ptp4l0-21swapper/010:11:030
134491530,4ptp4l0-21swapper/008:36:350
134491530,3ptp4l0-21swapper/109:37:061
134491530,11ptp4l0-21swapper/011:27:400
134491530,11ptp4l0-21swapper/011:27:400
1685499527,6cyclictest0-21swapper/310:47:013
1685499527,6cyclictest0-21swapper/309:43:103
134491520,4ptp4l0-21swapper/011:30:240
134491520,4ptp4l0-21swapper/010:35:310
134491520,13ptp4l0-21swapper/110:07:541
1685499514,5cyclictest0-21swapper/308:20:013
134491510,5ptp4l29825-21date12:15:000
134491510,4ptp4l0-21swapper/210:45:522
134491510,4ptp4l0-21swapper/112:32:391
134491510,4ptp4l0-21swapper/110:30:371
134491510,4ptp4l0-21swapper/012:04:320
134491510,4ptp4l0-21swapper/008:20:150
134491510,3ptp4l0-21swapper/212:29:552
134491510,3ptp4l0-21swapper/208:21:342
1685499508,7cyclictest0-21swapper/312:10:163
1685499508,7cyclictest0-21swapper/312:05:233
1685499508,6cyclictest0-21swapper/311:05:183
1685499506,6cyclictest0-21swapper/307:30:243
134491500,4ptp4l0-21swapper/212:12:122
134491500,4ptp4l0-21swapper/210:29:122
134491500,4ptp4l0-21swapper/209:17:432
134491500,4ptp4l0-21swapper/208:28:052
134491500,4ptp4l0-21swapper/108:51:431
134491500,4ptp4l0-21swapper/108:38:251
134491500,3ptp4l2398-21gmain08:30:372
134491500,3ptp4l0-21swapper/107:52:591
134491500,17ptp4l9-21ksoftirqd/007:13:040
1685499498,7cyclictest0-21swapper/311:50:253
1685499490,14cyclictest448-21dbus-daemon07:10:263
134491490,4ptp4l0-21swapper/210:33:292
134491490,4ptp4l0-21swapper/209:25:392
134491490,4ptp4l0-21swapper/207:59:292
134491490,4ptp4l0-21swapper/111:34:261
134491490,4ptp4l0-21swapper/009:12:360
134491490,3ptp4l0-21swapper/110:24:521
134491490,12ptp4l0-21swapper/211:51:542
1685499488,6cyclictest0-21swapper/310:05:163
1685499485,2cyclictest134491ptp4l11:55:153
1685499485,2cyclictest134491ptp4l11:55:143
134491480,4ptp4l0-21swapper/209:12:172
134491480,4ptp4l0-21swapper/208:07:212
134491480,4ptp4l0-21swapper/110:53:591
134491480,4ptp4l0-21swapper/110:53:591
134491480,4ptp4l0-21swapper/108:46:501
134491480,4ptp4l0-21swapper/107:27:201
134491480,4ptp4l0-21swapper/107:23:281
134491480,4ptp4l0-21swapper/008:25:250
134491480,4ptp4l0-21swapper/008:12:270
134491480,12ptp4l0-21swapper/107:41:261
134491480,12ptp4l0-21swapper/107:41:261
1685499477,6cyclictest0-21swapper/310:32:173
1685499477,6cyclictest0-21swapper/307:35:173
1685499476,7cyclictest0-21swapper/312:30:143
1685499476,5cyclictest0-21swapper/309:05:163
1685499475,7cyclictest0-21swapper/311:00:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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