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2026-05-06 - 17:00
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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 May 06, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1717121690,3sleep02541299cyclictest11:30:160
112992690,6sleep00-21swapper/007:49:590
134491680,6ptp4l0-21swapper/207:15:232
134491640,5ptp4l0-21swapper/307:07:463
134491630,3ptp4l15506-21ntp_states11:25:213
134491600,5ptp4l0-21swapper/008:40:120
134491590,4ptp4l0-21swapper/312:02:333
134491590,4ptp4l0-21swapper/310:42:313
134491590,18ptp4l19980-21ls08:05:263
134491580,4ptp4l0-21swapper/109:55:171
134491570,4ptp4l4769-21df_abs08:45:120
134491570,4ptp4l0-21swapper/208:25:322
134491570,3ptp4l0-21swapper/208:35:202
134491560,5ptp4l0-21swapper/207:05:302
134491560,3ptp4l0-21swapper/311:20:213
134491560,3ptp4l0-21swapper/212:25:522
134491550,4ptp4l0-21swapper/207:45:002
134491550,4ptp4l0-21swapper/107:31:331
134491550,3ptp4l0-21swapper/310:54:013
134491550,3ptp4l0-21swapper/108:35:011
134491550,3ptp4l0-21swapper/010:10:270
46312540,4sleep34627-21latency_hist11:05:003
235282540,3sleep10-21swapper/108:15:151
134491540,4ptp4l0-21swapper/211:40:202
134491540,4ptp4l0-21swapper/211:22:562
134491540,4ptp4l0-21swapper/210:37:512
134491540,12ptp4l0-21swapper/311:05:113
157682530,4sleep20-21swapper/212:35:202
134491530,4ptp4l0-21swapper/208:10:272
134491530,4ptp4l0-21swapper/208:06:382
134491520,5ptp4l0-21swapper/211:32:462
134491520,4ptp4l0-21swapper/209:28:342
134491520,3ptp4l0-21swapper/309:19:283
134491510,5ptp4l0-21swapper/111:27:521
134491510,4ptp4l0-21swapper/212:18:052
134491510,4ptp4l0-21swapper/211:51:482
134491510,4ptp4l0-21swapper/209:49:072
134491510,4ptp4l0-21swapper/207:54:592
134491510,3ptp4l0-21swapper/210:42:592
134491510,12ptp4l0-21swapper/207:56:102
134491510,11ptp4l0-21swapper/309:10:193
134491500,5ptp4l0-21swapper/211:36:292
134491500,4ptp4l0-21swapper/209:53:042
134491500,4ptp4l0-21swapper/208:15:442
134491500,4ptp4l0-21swapper/011:13:500
134491500,4ptp4l0-21swapper/008:09:220
134491500,4ptp4l0-21swapper/007:28:400
134491500,3ptp4l0-21swapper/208:51:232
134491500,3ptp4l0-21swapper/010:18:370
134491490,4ptp4l0-21swapper/212:01:492
134491490,4ptp4l0-21swapper/207:12:502
134491490,4ptp4l0-21swapper/010:52:120
134491490,3ptp4l0-21swapper/209:07:442
134491490,15ptp4l25-21ksoftirqd/111:09:591
2541399483,43cyclictest0-21swapper/109:00:591
2541399482,44cyclictest8907-21kworker/1:210:25:181
134491480,4ptp4l0-21swapper/210:24:522
134491480,4ptp4l0-21swapper/208:02:482
134491480,4ptp4l0-21swapper/207:21:542
134491480,4ptp4l0-21swapper/007:20:390
134491480,3ptp4l0-21swapper/309:03:573
134491480,3ptp4l0-21swapper/211:56:122
134491480,3ptp4l0-21swapper/211:03:302
134491470,4ptp4l0-21swapper/310:26:123
134491470,4ptp4l0-21swapper/308:59:343
134491470,4ptp4l0-21swapper/308:59:343
134491470,4ptp4l0-21swapper/107:23:221
134491470,3ptp4l0-21swapper/310:06:303
134491470,3ptp4l0-21swapper/110:30:001
134491470,12ptp4l0-21swapper/107:14:071
134491460,4ptp4l0-21swapper/312:15:023
134491460,4ptp4l0-21swapper/307:36:103
134491460,3ptp4l0-21swapper/209:02:382
134491450,4ptp4l0-21swapper/110:07:191
134491450,4ptp4l0-21swapper/108:57:431
134491450,4ptp4l0-21swapper/108:57:431
134491450,4ptp4l0-21swapper/009:39:590
134491450,3ptp4l121rcu_preempt08:16:583
134491450,3ptp4l0-21swapper/312:08:593
134491450,3ptp4l0-21swapper/112:39:121
134491450,2ptp4l0-21swapper/311:59:213
134491450,11ptp4l0-21swapper/109:48:151
134491440,5ptp4l0-21swapper/211:07:172
134491440,3ptp4l0-21swapper/312:13:473
134491440,3ptp4l0-21swapper/010:49:400
134491440,3ptp4l0-21swapper/010:49:400
134491440,3ptp4l0-21swapper/008:16:580
134491440,12ptp4l25-21ksoftirqd/111:59:071
134491440,10ptp4l0-21swapper/307:58:583
46198430,15rtkit-daemon12905-21apache212:20:253
134491430,9ptp4l0-21swapper/310:19:133
134491430,9ptp4l0-21swapper/110:40:221
134491430,8ptp4l0-21swapper/207:36:012
134491430,7ptp4l0-21swapper/007:05:210
134491430,5ptp4l4330-21ls12:10:272
134491430,4ptp4l2766-21apt-get12:10:120
134491430,4ptp4l0-21swapper/311:17:373
2541399422,38cyclictest0-21swapper/109:31:191
134491420,8ptp4l0-21swapper/210:25:352
134491420,6ptp4l0-21swapper/309:05:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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