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2026-05-14 - 21:53
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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 Thu May 14, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491670,4ptp4l0-21swapper/010:40:240
134491640,4ptp4l0-21swapper/307:15:243
69532630,5sleep20-21swapper/210:05:242
134491620,22ptp4l0-21swapper/010:15:270
134491610,4ptp4l4063-21cut11:10:162
134491600,4ptp4l0-21swapper/011:22:440
134491590,4ptp4l0-21swapper/210:00:462
134491590,3ptp4l0-21swapper/008:12:430
134491580,4ptp4l0-21swapper/309:44:573
134491580,3ptp4l0-21swapper/309:29:563
134491580,3ptp4l0-21swapper/309:29:563
134491580,3ptp4l0-21swapper/308:27:403
134491580,3ptp4l0-21swapper/308:27:403
134491570,4ptp4l0-21swapper/312:39:493
134491570,4ptp4l0-21swapper/207:52:472
134491570,3ptp4l0-21swapper/208:35:172
134491560,4ptp4l0-21swapper/311:30:483
134491560,4ptp4l0-21swapper/210:40:552
134491560,4ptp4l0-21swapper/209:03:272
134491560,4ptp4l0-21swapper/207:32:072
134491560,4ptp4l0-21swapper/111:34:151
134491560,4ptp4l0-21swapper/107:59:261
134491560,4ptp4l0-21swapper/010:30:170
134491560,3ptp4l0-21swapper/307:55:263
134491560,3ptp4l0-21swapper/208:55:322
134491560,3ptp4l0-21swapper/208:55:322
134491560,12ptp4l18689-21apt-get07:05:021
134491550,4ptp4l0-21swapper/311:23:313
134491550,4ptp4l0-21swapper/011:34:000
134491550,3ptp4l0-21swapper/309:30:183
134491540,4ptp4l0-21swapper/212:29:272
134491540,4ptp4l0-21swapper/207:25:082
134491540,4ptp4l0-21swapper/008:22:590
134491540,4ptp4l0-21swapper/007:07:370
134491540,3ptp4l0-21swapper/310:48:553
134491540,14ptp4l0-21swapper/307:40:253
134491530,4ptp4l0-21swapper/312:15:283
134491530,4ptp4l0-21swapper/312:15:283
134491530,4ptp4l0-21swapper/308:52:553
134491530,4ptp4l0-21swapper/012:10:080
134491530,3ptp4l0-21swapper/310:22:583
134491530,3ptp4l0-21swapper/210:56:542
134491530,3ptp4l0-21swapper/210:20:432
134491530,3ptp4l0-21swapper/110:23:571
134491530,3ptp4l0-21swapper/007:49:520
134491520,4ptp4l0-21swapper/312:01:203
134491520,4ptp4l0-21swapper/308:48:593
134491520,4ptp4l0-21swapper/208:51:572
134491520,3ptp4l0-21swapper/310:38:113
134491520,3ptp4l0-21swapper/208:46:092
134491520,2ptp4l0-21swapper/307:11:123
134491520,11ptp4l0-21swapper/209:42:082
134491510,4ptp4l0-21swapper/308:15:053
134491510,4ptp4l0-21swapper/209:55:352
134491510,4ptp4l0-21swapper/209:55:352
134491510,4ptp4l0-21swapper/108:18:231
134491510,4ptp4l0-21swapper/011:46:080
134491510,4ptp4l0-21swapper/011:35:360
134491510,3ptp4l0-21swapper/211:44:362
134491510,3ptp4l0-21swapper/210:18:042
134491510,3ptp4l0-21swapper/110:58:521
134491500,4ptp4l0-21swapper/312:23:053
134491500,4ptp4l0-21swapper/308:12:313
134491500,4ptp4l0-21swapper/207:16:292
134491500,10ptp4l0-21swapper/212:10:192
134491490,4ptp4l0-21swapper/311:40:313
134491490,4ptp4l0-21swapper/211:45:482
134491490,4ptp4l0-21swapper/008:38:230
134491490,3ptp4l0-21swapper/107:52:581
134491490,10ptp4l0-21swapper/210:54:222
134491480,8ptp4l0-21swapper/211:37:502
134491480,5ptp4l0-21swapper/311:50:223
134491480,4ptp4l0-21swapper/309:10:033
134491480,4ptp4l0-21swapper/012:37:090
134491480,4ptp4l0-21swapper/007:11:180
134491480,3ptp4l0-21swapper/112:35:491
134491470,4ptp4l0-21swapper/012:26:480
134491470,3ptp4l0-21swapper/209:37:222
2147899462,2cyclictest121rcu_preempt10:45:522
134491460,4ptp4l0-21swapper/311:26:063
134491460,4ptp4l0-21swapper/310:26:003
134491460,4ptp4l0-21swapper/309:04:583
134491460,4ptp4l0-21swapper/208:43:242
134491460,4ptp4l0-21swapper/109:33:211
134491460,4ptp4l0-21swapper/108:48:571
134491460,3ptp4l0-21swapper/308:39:123
134491460,3ptp4l0-21swapper/212:24:162
21478994512,8cyclictest33-21ksoftirqd/212:15:212
21478994512,8cyclictest33-21ksoftirqd/212:15:212
21478994511,4cyclictest33-21ksoftirqd/208:19:592
21476994539,4cyclictest9-21ksoftirqd/011:00:230
134491450,9ptp4l0-21swapper/210:31:202
134491450,6ptp4l0-21swapper/010:25:120
134491450,4ptp4l5423-21apt-get10:05:103
134491450,3ptp4l0-21swapper/209:06:002
134491450,12ptp4l0-21swapper/312:05:493
134491450,10ptp4l0-21swapper/110:40:141
134491450,10ptp4l0-21swapper/108:52:411
2147899442,5cyclictest121rcu_preempt09:19:432
21478994414,4cyclictest33-21ksoftirqd/209:10:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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