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2026-04-30 - 00:47
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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 Wed Apr 29, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2900921170,4sleep10-21swapper/112:20:131
272302650,5sleep327226-21sendmail_mailqu09:55:263
134491650,5ptp4l0-21swapper/210:53:182
134491650,32ptp4l41-21ksoftirqd/308:20:253
134491620,4ptp4l0-21swapper/209:43:132
134491610,4ptp4l0-21swapper/210:25:172
134491600,4ptp4l0-21swapper/012:14:240
134491600,4ptp4l0-21swapper/007:55:380
134491600,3ptp4l0-21swapper/010:46:040
1362799594,53cyclictest0-21swapper/311:15:293
134491590,4ptp4l0-21swapper/011:55:550
134491590,4ptp4l0-21swapper/007:05:320
134491570,4ptp4l0-21swapper/111:31:461
134491570,4ptp4l0-21swapper/011:00:160
134491570,3ptp4l0-21swapper/111:03:391
134491550,4ptp4l0-21swapper/211:55:582
134491550,4ptp4l0-21swapper/211:33:122
134491550,4ptp4l0-21swapper/208:47:132
134491550,4ptp4l0-21swapper/208:47:132
134491550,4ptp4l0-21swapper/208:04:542
134491550,4ptp4l0-21swapper/207:31:382
134491550,4ptp4l0-21swapper/108:58:141
134491550,3ptp4l15589-21mailstats08:20:242
134491550,3ptp4l0-21swapper/107:40:261
134491550,3ptp4l0-21swapper/009:26:080
1362799548,7cyclictest0-21swapper/307:40:223
1362799543,11cyclictest11660-21taskset09:22:503
1362799542,6cyclictest31876-21ps12:25:193
134491540,4ptp4l0-21swapper/212:37:292
134491540,4ptp4l0-21swapper/211:44:122
134491540,4ptp4l0-21swapper/211:23:522
134491540,4ptp4l0-21swapper/210:41:492
134491540,4ptp4l0-21swapper/209:31:582
134491540,4ptp4l0-21swapper/207:48:592
134491540,4ptp4l0-21swapper/207:48:592
134491540,4ptp4l0-21swapper/207:15:402
134491540,4ptp4l0-21swapper/110:10:061
134491540,3ptp4l0-21swapper/109:40:181
134491530,4ptp4l0-21swapper/207:56:052
134491530,4ptp4l0-21swapper/112:14:361
134491530,4ptp4l0-21swapper/107:23:001
134491530,3ptp4l0-21swapper/210:58:262
134491520,9ptp4l12419-21ntp_states07:05:301
134491520,4ptp4l0-21swapper/211:03:242
134491520,3ptp4l0-21swapper/111:38:451
134491510,4ptp4l0-21swapper/211:37:232
1362799508,7cyclictest0-21swapper/310:55:243
1362799508,6cyclictest0-21swapper/312:20:223
134491500,4ptp4l0-21swapper/208:56:492
134491500,4ptp4l0-21swapper/208:44:312
134491500,4ptp4l0-21swapper/208:36:092
134491500,4ptp4l0-21swapper/108:20:061
134491500,3ptp4l0-21swapper/107:33:261
1362799499,6cyclictest0-21swapper/307:30:213
1362799498,7cyclictest0-21swapper/309:15:193
1362799498,6cyclictest0-21swapper/311:10:133
1362799498,6cyclictest0-21swapper/311:00:263
1362799498,6cyclictest0-21swapper/310:15:293
1362799498,6cyclictest0-21swapper/308:50:163
1362799497,7cyclictest0-21swapper/307:55:183
134491490,4ptp4l0-21swapper/212:25:122
134491490,4ptp4l0-21swapper/208:09:582
134491490,4ptp4l0-21swapper/112:16:481
134491490,4ptp4l0-21swapper/111:27:511
134491490,4ptp4l0-21swapper/110:40:381
1362799487,6cyclictest0-21swapper/311:55:123
1362799487,14cyclictest0-21swapper/308:10:133
1362799483,10cyclictest16851-21sort08:25:133
13624994829,16cyclictest9-21ksoftirqd/008:30:000
134491480,4ptp4l0-21swapper/208:17:352
134491480,4ptp4l0-21swapper/111:50:471
134491480,4ptp4l0-21swapper/111:50:471
134491480,3ptp4l0-21swapper/112:38:391
134491480,10ptp4l0-21swapper/008:03:590
1362799478,6cyclictest0-21swapper/310:25:123
1362799477,6cyclictest0-21swapper/311:35:173
1362799477,6cyclictest0-21swapper/308:40:133
1362799477,6cyclictest0-21swapper/307:15:153
1362799473,11cyclictest0-21swapper/311:20:383
1362799470,13cyclictest20678-21users09:40:283
134491470,4ptp4l0-21swapper/108:05:091
134491470,3ptp4l0-21swapper/207:25:302
1362799463,7cyclictest0-21swapper/307:45:133
1362799463,7cyclictest0-21swapper/307:45:133
13626994625,17cyclictest33-21ksoftirqd/211:20:002
134491460,4ptp4l0-21swapper/109:00:541
134491460,3ptp4l0-21swapper/208:10:262
134491460,3ptp4l0-21swapper/109:30:261
134491460,3ptp4l0-21swapper/109:25:221
134491460,3ptp4l0-21swapper/108:12:261
1362799459,5cyclictest0-21swapper/310:10:293
1362799456,5cyclictest0-21swapper/307:10:173
1362799455,6cyclictest0-21swapper/308:30:133
134491450,4ptp4l0-21swapper/008:39:380
134491450,4ptp4l0-21swapper/007:44:320
134491450,3ptp4l20999-21apt-get07:25:140
134491450,3ptp4l0-21swapper/112:29:371
134491450,3ptp4l0-21swapper/111:14:061
134491450,3ptp4l0-21swapper/007:20:540
1362799448,7cyclictest0-21swapper/308:45:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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