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2026-08-21 - 22:40
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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 Aug 21, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6807996637,3cyclictest41-21ksoftirqd/308:28:553
6807996634,7cyclictest41-21ksoftirqd/310:45:243
6807996633,4cyclictest41-21ksoftirqd/311:47:213
6807996533,8cyclictest41-21ksoftirqd/307:40:223
6807996533,4cyclictest41-21ksoftirqd/307:55:013
6807996533,4cyclictest41-21ksoftirqd/307:55:013
6807996532,7cyclictest41-21ksoftirqd/309:50:013
6807996530,4cyclictest41-21ksoftirqd/311:18:003
6807996529,8cyclictest41-21ksoftirqd/309:10:173
6807996432,7cyclictest41-21ksoftirqd/308:30:193
6807996429,8cyclictest41-21ksoftirqd/312:25:183
6807996429,7cyclictest41-21ksoftirqd/311:00:193
6807996425,7cyclictest41-21ksoftirqd/309:20:013
6807996425,10cyclictest41-21ksoftirqd/307:58:553
6807996333,7cyclictest41-21ksoftirqd/311:35:273
6807996333,3cyclictest41-21ksoftirqd/310:15:003
6807996330,4cyclictest41-21ksoftirqd/309:05:243
6807996329,4cyclictest41-21ksoftirqd/308:41:133
6807996322,7cyclictest41-21ksoftirqd/312:10:003
6807996231,4cyclictest41-21ksoftirqd/310:04:323
6807996230,8cyclictest41-21ksoftirqd/309:55:003
6807996229,6cyclictest41-21ksoftirqd/307:30:013
6807996226,10cyclictest41-21ksoftirqd/312:01:133
6807996226,10cyclictest41-21ksoftirqd/312:01:133
6807996132,8cyclictest41-21ksoftirqd/310:35:003
6807996131,7cyclictest41-21ksoftirqd/311:55:183
6807996131,7cyclictest41-21ksoftirqd/308:15:193
6807996131,4cyclictest41-21ksoftirqd/308:13:273
6807996131,3cyclictest41-21ksoftirqd/311:44:123
6807996130,7cyclictest41-21ksoftirqd/308:25:013
6807996130,4cyclictest41-21ksoftirqd/311:14:193
6807996130,4cyclictest41-21ksoftirqd/310:50:483
680799612,29cyclictest0-21swapper/310:15:583
6807996032,3cyclictest41-21ksoftirqd/312:12:443
6807996029,4cyclictest41-21ksoftirqd/311:21:213
6807996028,4cyclictest41-21ksoftirqd/310:22:083
6807996022,8cyclictest41-21ksoftirqd/311:30:233
6807996022,11cyclictest41-21ksoftirqd/312:18:023
6807995930,3cyclictest41-21ksoftirqd/307:18:353
6807995924,9cyclictest41-21ksoftirqd/311:00:003
6807995830,7cyclictest41-21ksoftirqd/308:50:253
6807995822,10cyclictest41-21ksoftirqd/310:40:083
6807995820,8cyclictest41-21ksoftirqd/310:08:193
6807995820,8cyclictest41-21ksoftirqd/310:08:193
6807995819,8cyclictest41-21ksoftirqd/309:31:333
134491580,3ptp4l6828-21ls11:45:262
6807995729,2cyclictest41-21ksoftirqd/307:37:273
6807995727,3cyclictest41-21ksoftirqd/312:30:183
6807995727,3cyclictest41-21ksoftirqd/309:25:273
6807995725,4cyclictest41-21ksoftirqd/311:05:253
6807995720,4cyclictest41-21ksoftirqd/308:10:013
134491570,4ptp4l0-21swapper/307:48:183
134491570,3ptp4l2456-21users11:35:280
134491570,3ptp4l0-21swapper/209:30:212
134491570,18ptp4l0-21swapper/012:32:320
680799567,3cyclictest41-21ksoftirqd/308:00:253
6807995629,6cyclictest41-21ksoftirqd/308:45:183
6807995622,8cyclictest41-21ksoftirqd/309:55:243
6807995621,7cyclictest41-21ksoftirqd/309:40:293
680799560,10cyclictest121rcu_preempt10:29:183
134491560,4ptp4l0-21swapper/110:15:241
134491560,3ptp4l0-21swapper/210:54:502
134491560,3ptp4l0-21swapper/207:22:362
134491560,3ptp4l0-21swapper/107:40:111
134491550,4ptp4l0-21swapper/110:11:371
6807995424,6cyclictest41-21ksoftirqd/307:10:493
134491540,4ptp4l0-21swapper/310:35:583
134491540,3ptp4l0-21swapper/209:35:212
134491530,11ptp4l5582-21ntp_states07:05:202
6807995226,6cyclictest41-21ksoftirqd/307:30:263
6807995222,7cyclictest41-21ksoftirqd/309:00:193
6807995214,10cyclictest41-21ksoftirqd/308:59:323
134491520,5ptp4l0-21swapper/307:05:283
134491520,4ptp4l18239-21chrt07:34:120
134491520,4ptp4l0-21swapper/311:25:013
134491510,9ptp4l0-21swapper/008:10:270
134491500,4ptp4l0-21swapper/212:23:302
134491500,4ptp4l0-21swapper/111:14:591
134491500,4ptp4l0-21swapper/109:03:441
134491500,4ptp4l0-21swapper/012:39:090
134491500,4ptp4l0-21swapper/008:42:090
134491500,3ptp4l0-21swapper/312:39:193
680799496,2cyclictest41-21ksoftirqd/309:35:183
680799491,3cyclictest121rcu_preempt07:22:203
134491490,16ptp4l0-21swapper/010:37:530
680799485,3cyclictest41-21ksoftirqd/308:35:183
6807994820,9cyclictest41-21ksoftirqd/311:55:003
6807994817,4cyclictest41-21ksoftirqd/312:20:243
134491480,4ptp4l0-21swapper/209:27:222
134491480,4ptp4l0-21swapper/010:20:080
134491480,4ptp4l0-21swapper/009:52:420
134491480,4ptp4l0-21swapper/009:28:330
134491480,4ptp4l0-21swapper/007:57:360
134491480,3ptp4l0-21swapper/008:15:290
134491470,4ptp4l0-21swapper/012:22:050
134491470,4ptp4l0-21swapper/012:19:360
134491470,4ptp4l0-21swapper/008:56:520
134491470,4ptp4l0-21swapper/008:49:040
134491470,3ptp4l0-21swapper/210:40:032
134491470,3ptp4l0-21swapper/010:01:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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