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2026-05-02 - 05:48
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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 Sat May 02, 2026 00:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
208112740,5sleep10-21swapper/122:15:241
29802997331,8cyclictest41-21ksoftirqd/300:30:003
29802997033,4cyclictest41-21ksoftirqd/300:30:143
134491690,4ptp4l0-21swapper/000:05:260
29802996529,9cyclictest41-21ksoftirqd/321:10:193
29802996329,8cyclictest41-21ksoftirqd/322:45:133
29802996328,4cyclictest41-21ksoftirqd/319:20:123
29802996328,10cyclictest41-21ksoftirqd/319:42:493
134082610,3sleep30-21swapper/323:10:183
134491600,3ptp4l0-21swapper/022:00:170
134491600,18ptp4l0-21swapper/021:20:130
29802995927,9cyclictest41-21ksoftirqd/300:00:003
29802995924,3cyclictest41-21ksoftirqd/320:15:103
29802995923,4cyclictest41-21ksoftirqd/323:50:143
134491590,5ptp4l0-21swapper/019:45:200
134491590,4ptp4l0-21swapper/122:40:251
29802995818,4cyclictest41-21ksoftirqd/322:00:243
134491580,3ptp4l0-21swapper/100:20:251
134491580,3ptp4l0-21swapper/020:59:570
29802995727,4cyclictest41-21ksoftirqd/323:50:003
29802995725,10cyclictest41-21ksoftirqd/300:25:003
29802995724,6cyclictest41-21ksoftirqd/323:06:323
29802995724,6cyclictest41-21ksoftirqd/320:30:193
29802995721,4cyclictest41-21ksoftirqd/322:15:123
29802995719,4cyclictest41-21ksoftirqd/322:05:153
134491570,9ptp4l28309-21irqstats19:05:180
134491570,3ptp4l0-21swapper/120:35:241
29802995624,10cyclictest41-21ksoftirqd/320:10:193
29802995621,7cyclictest41-21ksoftirqd/323:20:283
29802995618,7cyclictest41-21ksoftirqd/319:48:493
134491560,4ptp4l0-21swapper/222:26:022
134491560,4ptp4l0-21swapper/220:48:532
134491560,4ptp4l0-21swapper/020:05:200
134491560,3ptp4l0-21swapper/100:00:231
134491560,3ptp4l0-21swapper/000:10:240
134491560,11ptp4l0-21swapper/021:04:270
29802995523,8cyclictest41-21ksoftirqd/320:50:173
29802995522,9cyclictest41-21ksoftirqd/322:50:123
2980299543,2cyclictest121rcu_preempt22:15:003
29802995425,7cyclictest41-21ksoftirqd/323:25:143
29802995423,8cyclictest41-21ksoftirqd/321:00:003
134491540,3ptp4l0-21swapper/000:30:240
134491540,12ptp4l0-21swapper/000:00:130
29802995325,9cyclictest41-21ksoftirqd/319:15:283
29802995323,8cyclictest41-21ksoftirqd/319:50:173
29802995320,7cyclictest41-21ksoftirqd/319:30:123
29802995320,4cyclictest41-21ksoftirqd/319:25:163
29802995316,10cyclictest41-21ksoftirqd/322:55:163
134491530,4ptp4l20182-21irqrtprio23:25:181
134491530,4ptp4l0-21swapper/122:55:191
134491530,4ptp4l0-21swapper/000:27:020
134491530,3ptp4l0-21swapper/023:59:000
134491530,3ptp4l0-21swapper/020:50:550
2980299524,8cyclictest41-21ksoftirqd/322:30:273
2980299523,4cyclictest41-21ksoftirqd/321:55:133
2980299523,2cyclictest41-21ksoftirqd/321:50:013
2980299522,7cyclictest121rcu_preempt22:40:493
29802995226,8cyclictest41-21ksoftirqd/319:55:223
29802995221,9cyclictest41-21ksoftirqd/319:14:593
134491520,4ptp4l0-21swapper/122:30:291
134491520,4ptp4l0-21swapper/122:14:171
129422520,4sleep02979999cyclictest23:10:160
2980299518,2cyclictest41-21ksoftirqd/300:05:193
2980299515,3cyclictest41-21ksoftirqd/322:25:203
2980299512,9cyclictest41-21ksoftirqd/321:40:163
2980299512,7cyclictest121rcu_preempt21:24:073
2980299512,6cyclictest0-21swapper/321:35:213
29802995120,10cyclictest41-21ksoftirqd/300:10:253
134491510,4ptp4l0-21swapper/123:14:351
134491510,4ptp4l0-21swapper/121:41:401
134491510,4ptp4l0-21swapper/020:13:110
134491510,3ptp4l0-21swapper/120:57:481
2980299506,2cyclictest41-21ksoftirqd/322:35:253
2980299505,8cyclictest41-21ksoftirqd/300:39:023
29802995023,7cyclictest41-21ksoftirqd/320:41:043
29802995022,7cyclictest41-21ksoftirqd/323:40:173
29802995019,9cyclictest41-21ksoftirqd/320:25:003
134491500,4ptp4l0-21swapper/219:07:122
134491500,4ptp4l0-21swapper/023:51:100
134491500,4ptp4l0-21swapper/023:42:410
134491500,3ptp4l0-21swapper/120:10:251
134491500,13ptp4l0-21swapper/021:52:420
134491500,11ptp4l0-21swapper/123:01:411
2980299494,8cyclictest11180-21runrttasks19:38:223
2980299494,3cyclictest121rcu_preempt20:06:153
2980299493,7cyclictest41-21ksoftirqd/320:25:143
29802994922,6cyclictest41-21ksoftirqd/300:01:293
2980199491,5cyclictest22838-21open_files23:30:222
134491490,4ptp4l0-21swapper/023:47:170
134491490,4ptp4l0-21swapper/022:33:160
134491490,4ptp4l0-21swapper/022:26:120
134491490,4ptp4l0-21swapper/022:23:400
134491490,4ptp4l0-21swapper/020:36:160
134491490,4ptp4l0-21swapper/020:28:510
134491490,3ptp4l0-21swapper/021:25:230
134491490,3ptp4l0-21swapper/000:19:280
2980299485,7cyclictest41-21ksoftirqd/323:00:233
2980299485,6cyclictest41-21ksoftirqd/323:40:003
2980299485,2cyclictest41-21ksoftirqd/323:15:253
2980299485,2cyclictest41-21ksoftirqd/323:15:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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