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2026-04-27 - 19:42
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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 Mon Apr 27, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
124152730,5sleep00-21swapper/009:18:440
134491670,3ptp4l9-21ksoftirqd/007:05:200
134491620,4ptp4l0-21swapper/308:15:003
134491620,4ptp4l0-21swapper/210:00:202
134491620,20ptp4l0-21swapper/009:10:150
134491610,4ptp4l20762-21ls09:35:222
17098996024,3cyclictest33-21ksoftirqd/211:00:002
17098996024,3cyclictest33-21ksoftirqd/211:00:002
17098995821,4cyclictest33-21ksoftirqd/211:31:472
134491580,4ptp4l0-21swapper/312:15:223
17098995717,5cyclictest33-21ksoftirqd/208:30:292
134491570,3ptp4l0-21swapper/211:35:262
134491560,3ptp4l1301-21snmpd10:39:203
134491560,3ptp4l0-21swapper/209:17:032
134491550,5ptp4l0-21swapper/311:15:113
17098995417,4cyclictest33-21ksoftirqd/212:10:012
17098995413,9cyclictest33-21ksoftirqd/207:30:162
17098995413,5cyclictest33-21ksoftirqd/212:10:242
134491540,4ptp4l0-21swapper/010:10:040
134491540,12ptp4l0-21swapper/011:20:190
134491540,12ptp4l0-21swapper/007:19:580
17098995316,8cyclictest33-21ksoftirqd/210:21:112
17098995313,6cyclictest33-21ksoftirqd/210:35:262
134491530,4ptp4l0-21swapper/208:40:212
17098995215,8cyclictest33-21ksoftirqd/207:56:242
17098995214,9cyclictest33-21ksoftirqd/210:30:232
134491520,5ptp4l0-21swapper/107:08:581
134491520,4ptp4l0-21swapper/309:04:073
134491520,4ptp4l0-21swapper/308:40:303
134491520,4ptp4l0-21swapper/307:54:373
134491520,4ptp4l0-21swapper/211:40:592
134491520,4ptp4l0-21swapper/012:26:550
17098995122,9cyclictest33-21ksoftirqd/209:55:012
17098995117,9cyclictest33-21ksoftirqd/207:45:132
17098995117,3cyclictest33-21ksoftirqd/212:21:172
134491510,3ptp4l0-21swapper/209:14:302
134491510,3ptp4l0-21swapper/208:35:132
1709999504,2cyclictest121rcu_preempt08:35:003
17098995011,7cyclictest33-21ksoftirqd/207:43:282
17099994918,4cyclictest41-21ksoftirqd/311:58:013
1709899499,3cyclictest33-21ksoftirqd/209:50:012
17098994940,2cyclictest33-21ksoftirqd/207:50:162
17098994929,10cyclictest33-21ksoftirqd/208:46:462
17098994914,9cyclictest33-21ksoftirqd/209:25:202
134491490,4ptp4l0-21swapper/309:38:013
134491490,4ptp4l0-21swapper/309:20:553
134491490,4ptp4l0-21swapper/108:25:481
17099994816,4cyclictest41-21ksoftirqd/311:28:443
17099994816,4cyclictest41-21ksoftirqd/311:28:443
1709899489,8cyclictest33-21ksoftirqd/211:55:392
1709899485,2cyclictest33-21ksoftirqd/210:25:242
17098994831,6cyclictest33-21ksoftirqd/208:26:072
1709899481,8cyclictest33-21ksoftirqd/209:45:012
17098994811,8cyclictest33-21ksoftirqd/210:06:312
17098994810,8cyclictest33-21ksoftirqd/207:10:172
134491480,4ptp4l0-21swapper/310:02:153
134491480,4ptp4l0-21swapper/212:37:272
134491480,4ptp4l0-21swapper/211:07:172
134491480,4ptp4l0-21swapper/210:50:422
134491480,4ptp4l0-21swapper/209:55:032
134491480,4ptp4l0-21swapper/010:19:220
134491480,2ptp4l5630-21strings11:20:212
17099994717,4cyclictest41-21ksoftirqd/310:05:153
1709899476,3cyclictest33-21ksoftirqd/212:00:212
1709899474,2cyclictest33-21ksoftirqd/207:26:492
1709899473,2cyclictest33-21ksoftirqd/211:10:502
17098994725,9cyclictest33-21ksoftirqd/208:52:442
17098994713,8cyclictest33-21ksoftirqd/209:05:182
17098994713,4cyclictest33-21ksoftirqd/208:10:172
1709899470,6cyclictest134491ptp4l08:00:122
134491470,5ptp4l0-21swapper/108:46:451
134491470,4ptp4l0-21swapper/307:35:133
134491470,4ptp4l0-21swapper/209:22:332
134491470,4ptp4l0-21swapper/111:00:371
134491470,3ptp4l0-21swapper/310:40:203
134491470,3ptp4l0-21swapper/309:15:353
134491470,3ptp4l0-21swapper/110:15:341
134491470,12ptp4l0-21swapper/310:48:053
17099994615,4cyclictest41-21ksoftirqd/311:40:203
1709999461,2cyclictest121rcu_preempt10:50:583
1709899465,6cyclictest33-21ksoftirqd/207:24:172
1709899465,2cyclictest33-21ksoftirqd/209:00:012
17098994625,9cyclictest33-21ksoftirqd/211:28:582
17098994625,9cyclictest33-21ksoftirqd/211:28:582
17098994615,8cyclictest33-21ksoftirqd/210:40:222
1709899460,6cyclictest12763-21kworker/2:010:47:402
17096994632,4cyclictest9-21ksoftirqd/008:15:340
134491460,4ptp4l0-21swapper/311:13:573
134491460,4ptp4l0-21swapper/309:42:123
134491460,4ptp4l0-21swapper/211:17:502
134491460,4ptp4l0-21swapper/009:48:380
134491460,4ptp4l0-21swapper/007:44:530
134491460,3ptp4l0-21swapper/208:24:322
134491460,3ptp4l0-21swapper/009:30:110
17099994521,3cyclictest41-21ksoftirqd/310:20:353
1709899452,2cyclictest121rcu_preempt09:04:462
17098994511,9cyclictest33-21ksoftirqd/211:50:272
17097994532,4cyclictest25-21ksoftirqd/108:50:281
134491450,9ptp4l0-21swapper/007:46:480
134491450,4ptp4l0-21swapper/312:10:073
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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