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2026-07-11 - 13:18
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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 Sat Jul 11, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1381321560,5sleep03147799cyclictest00:15:260
134491640,22ptp4l11205-21chrt00:10:200
134491620,4ptp4l0-21swapper/300:05:153
31479996129,7cyclictest33-21ksoftirqd/220:00:002
134491600,4ptp4l0-21swapper/320:55:273
31479995929,4cyclictest33-21ksoftirqd/222:45:002
31479995822,4cyclictest33-21ksoftirqd/219:22:162
134491580,3ptp4l0-21swapper/220:05:262
134491570,3ptp4l0-21swapper/221:45:142
31479995621,6cyclictest33-21ksoftirqd/222:45:232
134491560,17ptp4l18651-21irqrtprio19:50:183
42772550,2sleep1231rcuc/119:20:171
31479995530,2cyclictest33-21ksoftirqd/220:00:262
31479995524,5cyclictest33-21ksoftirqd/223:15:222
31479995523,4cyclictest33-21ksoftirqd/221:01:222
31479995522,6cyclictest33-21ksoftirqd/222:25:242
31479995522,3cyclictest33-21ksoftirqd/222:01:182
134491550,4ptp4l0-21swapper/020:15:180
31479995425,10cyclictest33-21ksoftirqd/200:21:552
31479995425,10cyclictest33-21ksoftirqd/200:21:552
31479995424,4cyclictest33-21ksoftirqd/221:38:062
31479995423,4cyclictest33-21ksoftirqd/219:32:082
31479995422,6cyclictest33-21ksoftirqd/220:45:222
31479995420,8cyclictest33-21ksoftirqd/223:35:162
31479995420,4cyclictest33-21ksoftirqd/223:34:452
31479995417,9cyclictest33-21ksoftirqd/222:05:232
134491540,3ptp4l0-21swapper/319:19:163
134491540,3ptp4l0-21swapper/300:17:063
31479995323,3cyclictest33-21ksoftirqd/219:25:012
31479995322,7cyclictest33-21ksoftirqd/223:50:222
134491530,4ptp4l0-21swapper/323:23:333
31479995225,6cyclictest33-21ksoftirqd/219:49:232
31479995223,3cyclictest33-21ksoftirqd/223:09:172
31479995219,3cyclictest33-21ksoftirqd/220:27:502
31479995213,11cyclictest33-21ksoftirqd/220:38:442
31479995213,11cyclictest33-21ksoftirqd/220:38:442
134491520,4ptp4l0-21swapper/323:18:393
134491520,4ptp4l0-21swapper/320:20:263
134491520,4ptp4l0-21swapper/020:56:410
134491520,3ptp4l0-21swapper/321:34:533
31479995137,4cyclictest33-21ksoftirqd/221:17:282
31479995123,3cyclictest33-21ksoftirqd/200:26:562
31479995119,3cyclictest33-21ksoftirqd/220:20:172
31479995117,11cyclictest33-21ksoftirqd/220:30:162
134491510,4ptp4l0-21swapper/323:32:213
134491510,4ptp4l0-21swapper/320:42:123
134491510,3ptp4l0-21swapper/319:47:323
31479995021,7cyclictest33-21ksoftirqd/220:12:162
31479995021,4cyclictest33-21ksoftirqd/220:40:252
31479995019,4cyclictest33-21ksoftirqd/222:50:222
31479995012,7cyclictest33-21ksoftirqd/223:58:192
134491500,4ptp4l0-21swapper/322:33:103
134491500,4ptp4l0-21swapper/322:28:143
134491500,4ptp4l0-21swapper/321:55:283
134491500,3ptp4l0-21swapper/320:50:263
134491500,3ptp4l0-21swapper/222:18:022
31479994922,9cyclictest33-21ksoftirqd/220:58:562
31479994919,8cyclictest33-21ksoftirqd/222:55:142
31479994918,4cyclictest33-21ksoftirqd/221:21:272
31479994915,5cyclictest33-21ksoftirqd/223:50:002
31479994914,4cyclictest33-21ksoftirqd/220:50:252
134491490,5ptp4l0-21swapper/019:05:200
134491490,4ptp4l0-21swapper/323:51:323
134491490,4ptp4l0-21swapper/322:13:033
134491490,4ptp4l0-21swapper/320:07:373
134491490,3ptp4l0-21swapper/322:20:293
31479994829,16cyclictest33-21ksoftirqd/221:45:002
31479994811,5cyclictest33-21ksoftirqd/219:20:002
134491480,4ptp4l0-21swapper/323:56:023
134491480,4ptp4l0-21swapper/323:46:093
134491480,4ptp4l0-21swapper/321:51:393
134491480,4ptp4l0-21swapper/320:25:033
134491480,4ptp4l0-21swapper/223:28:362
134491480,3ptp4l0-21swapper/323:41:103
134491480,2ptp4l0-21swapper/020:52:500
31479994718,7cyclictest33-21ksoftirqd/222:10:212
31479994715,6cyclictest33-21ksoftirqd/223:00:162
31479994715,4cyclictest33-21ksoftirqd/222:35:262
31479994713,5cyclictest33-21ksoftirqd/222:20:172
3147999471,2cyclictest121rcu_preempt21:05:262
134491470,4ptp4l0-21swapper/322:43:123
134491470,4ptp4l0-21swapper/321:29:563
31479994636,3cyclictest33-21ksoftirqd/200:19:592
3147999462,2cyclictest33-21ksoftirqd/219:14:592
31479994622,4cyclictest33-21ksoftirqd/223:14:472
134491460,9ptp4l0-21swapper/200:36:392
134491460,4ptp4l0-21swapper/319:34:343
134491460,4ptp4l0-21swapper/219:08:062
134491460,3ptp4l0-21swapper/320:30:163
134491460,3ptp4l0-21swapper/223:42:242
134491460,3ptp4l0-21swapper/122:07:181
134491460,3ptp4l0-21swapper/100:08:441
31479994539,3cyclictest33-21ksoftirqd/200:14:592
3147999452,2cyclictest121rcu_preempt21:25:482
31479994516,4cyclictest33-21ksoftirqd/222:32:182
134491450,4ptp4l12725-21ls20:45:260
134491450,4ptp4l0-21swapper/122:42:341
134491450,3ptp4l0-21swapper/319:40:543
134491450,3ptp4l0-21swapper/123:22:381
31479994416,5cyclictest33-21ksoftirqd/220:20:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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