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2026-01-08 - 20:23
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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 Jan 08, 2026 12:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2115621760,4sleep0265599cyclictest07:50:000
134491800,6ptp4l0-21swapper/307:26:223
134491680,3ptp4l121rcu_preempt09:45:260
253392670,3sleep00-21swapper/010:25:130
2656996326,7cyclictest25-21ksoftirqd/112:01:241
2656996227,7cyclictest25-21ksoftirqd/109:05:201
134491620,18ptp4l0-21swapper/311:05:213
2656996027,6cyclictest25-21ksoftirqd/108:40:211
134491600,5ptp4l0-21swapper/011:10:150
2656995931,4cyclictest25-21ksoftirqd/107:35:251
67032580,5sleep26704-21irqrtprio09:40:192
2656995830,3cyclictest25-21ksoftirqd/107:45:221
2656995726,4cyclictest25-21ksoftirqd/111:50:251
134491570,4ptp4l0-21swapper/307:40:153
134491570,3ptp4l0-21swapper/109:40:161
134491570,10ptp4l0-21swapper/209:58:152
265699563,8cyclictest25-21ksoftirqd/110:30:251
2656995624,8cyclictest25-21ksoftirqd/112:10:011
2656995623,7cyclictest25-21ksoftirqd/112:25:171
2656995623,7cyclictest25-21ksoftirqd/111:10:171
2656995622,7cyclictest25-21ksoftirqd/109:45:111
2656995619,8cyclictest25-21ksoftirqd/111:55:221
134491560,6ptp4l0-21swapper/207:05:082
134491560,3ptp4l0-21swapper/209:54:162
265699556,7cyclictest25-21ksoftirqd/111:45:011
2656995521,8cyclictest25-21ksoftirqd/112:20:221
2656995520,7cyclictest25-21ksoftirqd/112:10:191
134491550,5ptp4l0-21swapper/012:19:270
134491550,4ptp4l0-21swapper/208:11:482
265699544,9cyclictest25-21ksoftirqd/110:04:591
2656995419,4cyclictest25-21ksoftirqd/111:10:011
265699540,8cyclictest25-21ksoftirqd/108:50:131
265699536,10cyclictest25-21ksoftirqd/108:25:131
265699533,7cyclictest25-21ksoftirqd/107:15:131
2656995324,7cyclictest25-21ksoftirqd/109:35:161
134491530,4ptp4l0-21swapper/212:25:512
134491530,3ptp4l0-21swapper/012:20:090
134491530,2ptp4l0-21swapper/007:50:180
265699526,6cyclictest25-21ksoftirqd/111:20:011
2656995228,9cyclictest25-21ksoftirqd/108:14:161
2656995223,4cyclictest25-21ksoftirqd/110:20:211
265699520,6cyclictest25-21ksoftirqd/112:35:261
134491520,4ptp4l0-21swapper/311:44:123
134491520,4ptp4l0-21swapper/212:01:412
134491520,4ptp4l0-21swapper/210:30:172
134491520,4ptp4l0-21swapper/208:54:222
134491520,4ptp4l0-21swapper/008:17:450
134491520,3ptp4l0-21swapper/207:46:162
265699514,8cyclictest25-21ksoftirqd/110:40:171
265699513,8cyclictest25-21ksoftirqd/108:25:001
265699512,7cyclictest0-21swapper/110:05:231
265699511,5cyclictest25-21ksoftirqd/108:30:141
265699511,11cyclictest0-21swapper/112:16:361
134491510,4ptp4l0-21swapper/308:48:273
134491510,4ptp4l0-21swapper/210:55:572
134491510,4ptp4l0-21swapper/210:21:272
134491510,4ptp4l0-21swapper/210:13:422
134491510,4ptp4l0-21swapper/210:13:422
134491510,3ptp4l0-21swapper/307:33:593
134491510,3ptp4l0-21swapper/009:41:030
265699506,7cyclictest25-21ksoftirqd/108:45:171
265699505,8cyclictest25-21ksoftirqd/109:25:171
265699503,6cyclictest25-21ksoftirqd/109:20:261
265699502,8cyclictest25-21ksoftirqd/110:45:211
265699502,7cyclictest0-21swapper/107:30:141
2656995023,8cyclictest25-21ksoftirqd/108:00:171
134491500,4ptp4l0-21swapper/308:58:413
134491500,4ptp4l0-21swapper/211:56:302
134491500,4ptp4l0-21swapper/211:32:332
134491500,4ptp4l0-21swapper/208:24:192
134491500,4ptp4l0-21swapper/208:01:542
134491500,4ptp4l0-21swapper/010:04:470
134491500,3ptp4l0-21swapper/307:24:003
265699495,7cyclictest25-21ksoftirqd/109:34:591
265699494,7cyclictest21219-21cron11:30:011
265699493,9cyclictest25-21ksoftirqd/107:40:151
265699493,7cyclictest25-21ksoftirqd/111:30:171
2656994930,9cyclictest25-21ksoftirqd/110:50:171
265699492,10cyclictest25-21ksoftirqd/111:20:151
265699490,7cyclictest25-21ksoftirqd/111:00:001
265699490,5cyclictest25-21ksoftirqd/109:15:171
134491490,4ptp4l0-21swapper/311:24:553
134491490,4ptp4l0-21swapper/308:30:533
134491490,4ptp4l0-21swapper/212:18:452
134491490,4ptp4l0-21swapper/208:47:492
134491490,3ptp4l0-21swapper/308:26:553
134491490,3ptp4l0-21swapper/307:18:303
265699485,7cyclictest25-21ksoftirqd/111:35:201
265699484,8cyclictest25-21ksoftirqd/111:45:181
265699484,7cyclictest25-21ksoftirqd/107:10:141
265699483,6cyclictest25-21ksoftirqd/107:25:241
265699482,7cyclictest25-21ksoftirqd/110:35:181
265699481,11cyclictest0-21swapper/108:37:311
265699480,7cyclictest25-21ksoftirqd/110:25:131
265699480,6cyclictest92362sleep107:23:251
265699480,6cyclictest25-21ksoftirqd/110:10:121
265699480,6cyclictest25-21ksoftirqd/110:10:121
134491480,4ptp4l0-21swapper/307:09:563
134491480,4ptp4l0-21swapper/212:14:262
134491480,4ptp4l0-21swapper/212:05:542
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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