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2026-04-12 - 04:33
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackcslot8.osadl.org (updated Sun Apr 12, 2026 00:48:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2604399379181,1cyclictest151rcu_preempt21:34:444
2601599372174,2cyclictest151rcu_preempt21:43:0327
260919927479,1cyclictest151rcu_preempt22:23:0517
26048992135,161cyclictest0-21swapper/1321:48:195
330891205197,6phc2sys0-21swapper/219:07:1612
330891205197,6phc2sys0-21swapper/219:07:1612
3273911720,158ptp4l0-21swapper/119:05:151
3273911720,158ptp4l0-21swapper/119:05:151
259999916634,93cyclictest0-21swapper/321:41:5823
26048991659,94cyclictest439-21pr/ttyS022:48:385
26048991605,102cyclictest0-21swapper/1300:21:435
26048991555,110cyclictest0-21swapper/1323:44:195
259999915426,79cyclictest0-21swapper/300:30:0523
259999914924,81cyclictest0-21swapper/322:26:0623
259999914735,111cyclictest0-21swapper/322:23:3923
260969914350,55cyclictest0-21swapper/2523:55:4518
260969914349,55cyclictest0-21swapper/2523:31:4118
26015991430,84cyclictest0-21swapper/521:32:4127
26043991420,84cyclictest0-21swapper/1223:50:124
259839914235,69cyclictest0-21swapper/023:15:010
260439914118,74cyclictest0-21swapper/1222:34:044
260969914030,66cyclictest0-21swapper/2522:57:2818
260969914029,67cyclictest0-21swapper/2522:53:1218
260969914028,66cyclictest0-21swapper/2521:31:1718
260969913929,65cyclictest0-21swapper/2522:35:1918
260969913929,64cyclictest0-21swapper/2523:43:5818
260229913941,51cyclictest0-21swapper/722:30:0529
259839913935,89cyclictest0-21swapper/022:40:230
26043991380,86cyclictest0-21swapper/1220:39:574
260969913731,67cyclictest0-21swapper/2523:45:3418
260969913729,65cyclictest0-21swapper/2523:27:5618
260969913729,64cyclictest0-21swapper/2521:56:3218
260969913727,63cyclictest0-21swapper/2523:21:3118
260969913629,63cyclictest0-21swapper/2522:14:4318
26048991365,84cyclictest0-21swapper/1322:28:245
260969913541,58cyclictest0-21swapper/2500:12:3418
260969913533,60cyclictest0-21swapper/2519:25:1018
260969913533,60cyclictest0-21swapper/2519:25:1018
259999913534,49cyclictest0-21swapper/322:05:1423
260969913430,63cyclictest0-21swapper/2500:31:2318
260969913428,59cyclictest0-21swapper/2522:24:0518
260969913427,62cyclictest0-21swapper/2500:22:4418
260159913430,56cyclictest0-21swapper/520:35:1527
259999913433,51cyclictest0-21swapper/300:02:0423
259999913419,93cyclictest0-21swapper/321:29:5923
259999913418,86cyclictest0-21swapper/321:19:5023
259839913427,103cyclictest0-21swapper/022:52:050
260969913329,66cyclictest0-21swapper/2500:28:2118
260969913329,66cyclictest0-21swapper/2500:28:2018
260969913329,61cyclictest0-21swapper/2521:51:1218
260969913329,60cyclictest0-21swapper/2521:40:3018
260969913326,62cyclictest0-21swapper/2520:15:3218
26048991335,107cyclictest0-21swapper/1320:16:255
260969913226,62cyclictest0-21swapper/2523:06:3318
259839913224,88cyclictest0-21swapper/000:08:280
240102132124,6sleep00-21swapper/019:05:250
240102132124,6sleep00-21swapper/019:05:240
260969913132,65cyclictest0-21swapper/2522:04:0118
260969913126,61cyclictest0-21swapper/2520:35:1818
260969913126,61cyclictest0-21swapper/2520:20:2118
260439913140,53cyclictest0-21swapper/1223:57:414
26043991310,83cyclictest0-21swapper/1221:40:124
260969912930,58cyclictest0-21swapper/2522:17:5518
260969912929,61cyclictest0-21swapper/2523:19:2318
260769912931,86cyclictest0-21swapper/2022:00:0013
26051991292,125cyclictest0-21swapper/1419:50:146
26048991295,82cyclictest0-21swapper/1322:21:285
260159912933,52cyclictest0-21swapper/523:43:3927
260969912832,60cyclictest0-21swapper/2523:04:5818
260969912826,57cyclictest0-21swapper/2500:35:1818
260969912826,57cyclictest0-21swapper/2500:35:1718
26048991289,118cyclictest0-21swapper/1323:56:565
260439912825,61cyclictest0-21swapper/1222:27:384
260969912726,58cyclictest0-21swapper/2521:37:1818
26051991272,120cyclictest0-21swapper/1421:40:196
26051991272,117cyclictest0-21swapper/1422:47:076
260439912743,52cyclictest0-21swapper/1222:40:444
260439912725,61cyclictest0-21swapper/1221:45:274
260969912627,58cyclictest0-21swapper/2500:08:3318
260969912627,57cyclictest0-21swapper/2520:05:2418
260439912648,55cyclictest0-21swapper/1221:10:124
260439912626,66cyclictest0-21swapper/1221:24:354
260969912527,58cyclictest0-21swapper/2500:01:3618
260969912526,57cyclictest0-21swapper/2523:39:1018
260969912525,58cyclictest0-21swapper/2519:31:1118
260969912525,58cyclictest0-21swapper/2519:31:1118
260439912549,54cyclictest0-21swapper/1200:15:114
260439912534,54cyclictest0-21swapper/1223:15:134
260439912529,70cyclictest0-21swapper/1222:17:464
260439912529,60cyclictest0-21swapper/1222:11:354
260439912526,62cyclictest0-21swapper/1223:23:454
260159912545,55cyclictest0-21swapper/523:19:5327
260969912426,58cyclictest0-21swapper/2522:05:3718
260969912425,59cyclictest0-21swapper/2522:27:0118
260439912452,59cyclictest0-21swapper/1200:27:244
260439912452,59cyclictest0-21swapper/1200:27:234
260439912442,60cyclictest0-21swapper/1223:30:114
260439912437,63cyclictest0-21swapper/1200:38:364
260439912437,63cyclictest0-21swapper/1200:38:364
260439912429,70cyclictest0-21swapper/1222:03:054
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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