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2026-04-24 - 08:32
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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 Fri Apr 24, 2026 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1304321500,5sleep12291299cyclictest23:05:151
1448621430,6sleep12291299cyclictest19:12:081
76942810,4sleep37709-21spawn19:11:343
169112690,6sleep12291299cyclictest19:17:261
142652690,4sleep0101ktimersoftd/019:20:180
22914996420,7cyclictest41-21ksoftirqd/319:15:153
165772630,3sleep10-21swapper/123:10:281
138512620,3sleep2311rcuc/219:16:532
134491610,4ptp4l33-21ksoftirqd/219:05:262
134491590,3ptp4l0-21swapper/221:00:202
134491570,4ptp4l0-21swapper/119:06:061
134491570,3ptp4l0-21swapper/023:48:280
134491560,3ptp4l0-21swapper/200:10:262
134491550,3ptp4l0-21swapper/122:00:271
22914995422,3cyclictest41-21ksoftirqd/319:20:353
22914995420,3cyclictest41-21ksoftirqd/319:59:593
134491540,4ptp4l0-21swapper/222:46:142
134491540,3ptp4l0-21swapper/223:25:212
134491530,4ptp4l0-21swapper/322:56:563
22914995220,4cyclictest41-21ksoftirqd/320:34:203
22914995216,4cyclictest41-21ksoftirqd/323:30:073
134491520,4ptp4l0-21swapper/221:23:392
134491520,4ptp4l0-21swapper/221:23:392
134491520,4ptp4l0-21swapper/122:58:211
134491520,3ptp4l28147-21cat23:35:281
131032520,5sleep013117-21spawn19:10:450
134491510,4ptp4l0-21swapper/223:59:272
134491510,4ptp4l0-21swapper/222:00:102
134491510,4ptp4l0-21swapper/220:18:582
134491510,4ptp4l0-21swapper/220:18:582
134491510,4ptp4l0-21swapper/200:07:322
2291499503,3cyclictest0-21swapper/319:51:033
134491500,7ptp4l0-21swapper/220:25:122
134491500,4ptp4l0-21swapper/222:16:152
134491500,4ptp4l0-21swapper/220:04:052
2291499493,3cyclictest0-21swapper/319:44:533
22914994917,4cyclictest41-21ksoftirqd/323:16:153
22914994913,4cyclictest41-21ksoftirqd/320:44:023
134491490,4ptp4l0-21swapper/300:19:163
134491490,4ptp4l0-21swapper/221:59:102
134491490,3ptp4l0-21swapper/320:26:273
134491490,3ptp4l0-21swapper/220:22:112
2291499483,3cyclictest0-21swapper/300:04:123
2291499482,3cyclictest0-21swapper/323:52:143
22914994817,8cyclictest41-21ksoftirqd/319:45:213
134491480,5ptp4l0-21swapper/319:09:343
134491480,4ptp4l0-21swapper/323:40:593
134491480,4ptp4l0-21swapper/122:10:201
134491480,4ptp4l0-21swapper/019:05:250
134491480,3ptp4l0-21swapper/121:43:381
134491480,3ptp4l0-21swapper/121:06:141
134491480,3ptp4l0-21swapper/119:30:011
134491480,11ptp4l0-21swapper/223:38:282
22914994736,8cyclictest41-21ksoftirqd/321:05:283
2291499473,3cyclictest0-21swapper/320:36:533
134491470,4ptp4l0-21swapper/322:09:103
134491470,4ptp4l0-21swapper/320:53:543
134491470,4ptp4l0-21swapper/200:26:472
134491470,3ptp4l0-21swapper/122:19:321
22914994634,10cyclictest41-21ksoftirqd/319:30:273
2291499463,3cyclictest0-21swapper/321:55:353
2291499462,3cyclictest0-21swapper/322:48:473
22914994619,6cyclictest41-21ksoftirqd/322:25:243
22914994614,7cyclictest41-21ksoftirqd/323:27:503
22914994614,7cyclictest41-21ksoftirqd/323:06:563
2291499461,3cyclictest0-21swapper/321:48:173
22914994613,3cyclictest41-21ksoftirqd/321:33:093
22914994612,7cyclictest41-21ksoftirqd/322:39:363
134491460,3ptp4l0-21swapper/200:24:552
134491460,3ptp4l0-21swapper/119:53:361
134491460,11ptp4l16709-21grep19:18:500
2291499457,10cyclictest41-21ksoftirqd/321:11:463
22914994525,9cyclictest41-21ksoftirqd/321:25:293
22914994516,3cyclictest41-21ksoftirqd/321:50:243
22914994516,3cyclictest41-21ksoftirqd/321:50:243
22914994514,4cyclictest41-21ksoftirqd/320:56:403
22914994513,4cyclictest41-21ksoftirqd/320:46:453
22914994513,4cyclictest41-21ksoftirqd/320:13:033
22914994510,4cyclictest41-21ksoftirqd/321:44:303
2291399451,2cyclictest0-21swapper/222:40:192
134491450,9ptp4l0-21swapper/219:35:542
134491450,5ptp4l0-21swapper/221:25:282
134491450,4ptp4l0-21swapper/121:48:381
134491450,4ptp4l0-21swapper/121:18:381
134491450,3ptp4l0-21swapper/123:20:121
134491450,3ptp4l0-21swapper/121:30:141
134491450,3ptp4l0-21swapper/100:32:431
134491450,10ptp4l0-21swapper/021:58:140
134491450,10ptp4l0-21swapper/021:25:140
46198440,4rtkit-daemon0-21swapper/221:36:482
2291499445,7cyclictest41-21ksoftirqd/321:01:263
22914994432,10cyclictest41-21ksoftirqd/323:35:273
22914994413,3cyclictest41-21ksoftirqd/320:20:013
22914994413,3cyclictest41-21ksoftirqd/320:20:013
22911994422,20cyclictest9-21ksoftirqd/022:45:120
134491440,9ptp4l0-21swapper/221:11:162
134491440,9ptp4l0-21swapper/219:50:392
134491440,9ptp4l0-21swapper/219:32:482
134491440,9ptp4l0-21swapper/200:15:202
134491440,5ptp4l16651-21apt-get19:45:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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