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2026-07-29 - 03:22
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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 Jul 29, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134691730,5getstats0-21swapper/319:45:243
22447996634,4cyclictest41-21ksoftirqd/300:00:003
22446996531,3cyclictest33-21ksoftirqd/222:18:162
22446996431,4cyclictest33-21ksoftirqd/222:04:212
22446996430,3cyclictest33-21ksoftirqd/220:24:502
22446996333,4cyclictest33-21ksoftirqd/221:44:232
22446996333,3cyclictest33-21ksoftirqd/200:00:162
22446996328,4cyclictest33-21ksoftirqd/220:09:482
134491620,5ptp4l0-21swapper/323:35:193
134491620,5ptp4l0-21swapper/323:35:193
22446996131,3cyclictest33-21ksoftirqd/221:50:002
22446996124,4cyclictest33-21ksoftirqd/220:36:002
134491610,4ptp4l0-21swapper/021:32:120
22447996030,4cyclictest41-21ksoftirqd/320:15:223
22447996030,4cyclictest41-21ksoftirqd/319:10:173
134491600,7ptp4l25-21ksoftirqd/100:15:221
134491600,4ptp4l9688-21diskstats00:30:153
134491600,3ptp4l0-21swapper/321:45:243
22447995927,3cyclictest41-21ksoftirqd/300:15:153
22446995931,3cyclictest33-21ksoftirqd/223:53:162
22446995927,3cyclictest33-21ksoftirqd/221:52:502
22447995829,3cyclictest41-21ksoftirqd/323:50:183
22447995825,4cyclictest41-21ksoftirqd/319:25:283
22447995821,4cyclictest41-21ksoftirqd/320:05:003
22446995822,4cyclictest33-21ksoftirqd/222:59:562
22447995726,4cyclictest41-21ksoftirqd/321:15:163
22447995723,3cyclictest41-21ksoftirqd/322:50:003
22447995722,4cyclictest41-21ksoftirqd/321:34:593
22447995717,5cyclictest41-21ksoftirqd/323:33:083
22446995736,18cyclictest33-21ksoftirqd/223:45:002
22446995724,4cyclictest33-21ksoftirqd/223:35:162
22446995724,4cyclictest33-21ksoftirqd/223:35:162
134491570,3ptp4l0-21swapper/223:30:242
134491570,3ptp4l0-21swapper/220:10:242
299692560,5sleep20-21swapper/219:25:202
22447995626,3cyclictest41-21ksoftirqd/322:30:013
22447995623,4cyclictest41-21ksoftirqd/321:29:593
22447995623,3cyclictest41-21ksoftirqd/322:20:203
134491560,4ptp4l0-21swapper/121:42:451
22447995527,4cyclictest41-21ksoftirqd/300:10:203
22447995525,4cyclictest41-21ksoftirqd/323:00:193
22447995525,3cyclictest41-21ksoftirqd/320:10:153
22447995523,3cyclictest41-21ksoftirqd/322:35:123
22447995522,3cyclictest41-21ksoftirqd/320:55:293
22447995521,6cyclictest41-21ksoftirqd/320:50:343
22447995518,4cyclictest41-21ksoftirqd/320:05:163
22446995522,4cyclictest33-21ksoftirqd/200:39:062
22446995522,4cyclictest33-21ksoftirqd/200:39:062
134491550,4ptp4l0-21swapper/219:38:462
22446995425,4cyclictest33-21ksoftirqd/220:55:202
134491540,4ptp4l0-21swapper/200:20:222
134491540,3ptp4l0-21swapper/221:09:082
22446995321,3cyclictest33-21ksoftirqd/223:25:172
134491530,11ptp4l0-21swapper/122:57:241
22447995221,4cyclictest41-21ksoftirqd/300:00:163
22446995225,4cyclictest33-21ksoftirqd/200:06:562
22446995225,4cyclictest33-21ksoftirqd/200:06:562
134491520,9ptp4l20322-21df19:05:111
134491520,4ptp4l7403-21ntpq19:45:242
134491520,4ptp4l0-21swapper/323:41:373
134491520,3ptp4l0-21swapper/219:24:232
134491520,17ptp4l0-21swapper/021:40:370
2244799512,2cyclictest121rcu_preempt20:40:383
22446995141,3cyclictest33-21ksoftirqd/222:52:122
22446995126,8cyclictest33-21ksoftirqd/223:50:012
22446995112,7cyclictest33-21ksoftirqd/222:10:022
22446995110,8cyclictest33-21ksoftirqd/200:18:572
134491510,5ptp4l0-21swapper/320:26:133
134491510,5ptp4l0-21swapper/319:09:273
134491510,4ptp4l0-21swapper/100:05:321
134491510,4ptp4l0-21swapper/100:05:321
134491510,3ptp4l0-21swapper/223:04:002
134491510,12ptp4l0-21swapper/022:53:510
22446995037,2cyclictest33-21ksoftirqd/200:30:162
22446995030,4cyclictest33-21ksoftirqd/219:15:002
134491500,4ptp4l0-21swapper/322:15:073
134491500,4ptp4l0-21swapper/320:22:463
134491500,4ptp4l0-21swapper/319:55:333
134491500,4ptp4l0-21swapper/200:25:152
134491500,2ptp4l0-21swapper/123:07:501
2244799498,7cyclictest0-21swapper/319:50:213
22447994920,3cyclictest41-21ksoftirqd/321:35:253
22447994916,4cyclictest41-21ksoftirqd/323:50:013
22447994913,3cyclictest41-21ksoftirqd/321:10:183
22446994935,4cyclictest33-21ksoftirqd/221:27:172
22446994918,8cyclictest33-21ksoftirqd/220:40:152
22446994916,3cyclictest33-21ksoftirqd/221:30:172
134491490,6ptp4l21126-21ls19:05:190
134491490,4ptp4l0-21swapper/219:34:542
134491490,4ptp4l0-21swapper/122:10:561
134491490,4ptp4l0-21swapper/121:02:451
134491490,4ptp4l0-21swapper/023:36:370
134491490,4ptp4l0-21swapper/023:36:370
134491490,4ptp4l0-21swapper/021:52:450
134491490,3ptp4l0-21swapper/121:10:171
134491490,3ptp4l0-21swapper/021:11:450
2244799482,2cyclictest121rcu_preempt21:44:493
22447994817,4cyclictest41-21ksoftirqd/319:35:253
22447994817,3cyclictest41-21ksoftirqd/323:05:173
22447994816,4cyclictest41-21ksoftirqd/319:20:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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