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2026-07-28 - 10:55
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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 Tue Jul 28, 2026 00:49:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2075299347150,1cyclictest151rcu_preempt23:37:2015
2075299347150,1cyclictest151rcu_preempt23:37:2015
207709929464,33cyclictest167-21ksoftirqd/2522:52:0418
3273912460,233ptp4l0-21swapper/119:05:151
20679991610,120cyclictest0-21swapper/1121:38:363
20763991451,88cyclictest0-21swapper/2421:49:5117
207389914343,63cyclictest0-21swapper/2000:32:3113
206399913971,38cyclictest0-21swapper/522:00:2627
207969913823,114cyclictest0-21swapper/2923:20:1222
207969913823,114cyclictest0-21swapper/2923:20:1122
207969913823,114cyclictest0-21swapper/2921:42:3822
20763991380,80cyclictest27052-21fw_forwarded_lo23:10:1617
207129913826,78cyclictest0-21swapper/1623:44:388
207129913826,78cyclictest0-21swapper/1623:44:388
20679991380,86cyclictest0-21swapper/1120:50:153
207969913723,97cyclictest0-21swapper/2919:55:1522
207129913726,69cyclictest0-21swapper/1622:20:118
20639991371,85cyclictest0-21swapper/523:19:3227
20639991371,85cyclictest0-21swapper/523:19:3127
207129913624,111cyclictest0-21swapper/1600:40:008
207129913525,79cyclictest0-21swapper/1623:29:538
207129913525,79cyclictest0-21swapper/1623:29:538
207129913524,89cyclictest0-21swapper/1622:59:138
207129913524,89cyclictest0-21swapper/1622:59:138
207129913524,82cyclictest0-21swapper/1621:29:248
207129913523,111cyclictest0-21swapper/1623:03:318
20763991340,78cyclictest0-21swapper/2422:50:1217
207589913327,70cyclictest0-21swapper/2323:01:3916
206399913350,55cyclictest0-21swapper/523:08:1727
206399913324,107cyclictest0-21swapper/522:13:4627
207639913215,66cyclictest0-21swapper/2400:31:1717
20752991320,84cyclictest0-21swapper/2222:22:3215
207129913226,76cyclictest0-21swapper/1622:52:528
207589913126,67cyclictest0-21swapper/2323:30:5716
207589913126,67cyclictest0-21swapper/2323:30:5616
2072699131126,2cyclictest151rcu_preempt21:41:5610
206399913126,67cyclictest0-21swapper/523:21:4027
206399913126,67cyclictest0-21swapper/523:21:3927
208099913039,53cyclictest0-21swapper/3100:38:3125
207589913031,58cyclictest0-21swapper/2320:05:1816
207589913029,71cyclictest0-21swapper/2322:12:2916
206399913026,66cyclictest0-21swapper/522:20:1327
208099912925,62cyclictest0-21swapper/3120:43:5325
207969912921,69cyclictest0-21swapper/2921:25:3222
207589912929,66cyclictest0-21swapper/2323:18:0716
207589912929,66cyclictest0-21swapper/2323:18:0716
207589912929,63cyclictest0-21swapper/2322:40:1616
207589912926,61cyclictest0-21swapper/2300:02:1816
207589912926,61cyclictest0-21swapper/2300:02:1716
206399912949,52cyclictest0-21swapper/521:50:1127
206399912927,67cyclictest0-21swapper/523:37:1027
206399912927,67cyclictest0-21swapper/523:37:0927
206399912927,65cyclictest0-21swapper/523:59:3627
206399912927,65cyclictest0-21swapper/523:59:3627
20639991290,79cyclictest0-21swapper/500:28:2827
207589912829,72cyclictest0-21swapper/2323:37:5216
207589912829,72cyclictest0-21swapper/2323:37:5216
207589912828,69cyclictest0-21swapper/2323:13:5416
207589912828,63cyclictest0-21swapper/2321:55:2216
207589912827,68cyclictest0-21swapper/2320:20:1616
207389912828,61cyclictest0-21swapper/2022:06:5313
207199912849,64cyclictest0-21swapper/1722:17:449
207199912838,61cyclictest0-21swapper/1721:17:199
206399912830,62cyclictest0-21swapper/521:25:0927
206399912829,64cyclictest0-21swapper/521:16:3527
206399912827,65cyclictest0-21swapper/523:14:4327
206399912826,68cyclictest0-21swapper/500:19:3427
207909912750,56cyclictest0-21swapper/2821:36:0221
207909912738,59cyclictest0-21swapper/2800:02:2721
207909912738,59cyclictest0-21swapper/2800:02:2721
207589912730,72cyclictest0-21swapper/2321:19:0216
207589912728,68cyclictest0-21swapper/2323:47:5216
207589912728,68cyclictest0-21swapper/2323:47:5216
207589912727,59cyclictest0-21swapper/2300:05:1516
207589912727,59cyclictest0-21swapper/2300:05:1516
207589912726,68cyclictest0-21swapper/2319:14:2516
207589912726,66cyclictest0-21swapper/2320:49:0016
207589912724,62cyclictest0-21swapper/2322:18:2216
207199912742,56cyclictest0-21swapper/1720:13:139
207129912716,91cyclictest0-21swapper/1619:50:018
206399912729,68cyclictest0-21swapper/520:10:2127
206399912727,68cyclictest0-21swapper/520:25:1727
206399912725,66cyclictest0-21swapper/521:36:2327
208099912628,58cyclictest0-21swapper/3122:42:3325
207909912651,61cyclictest0-21swapper/2823:47:3021
207909912651,61cyclictest0-21swapper/2823:47:3021
207909912626,63cyclictest0-21swapper/2821:07:0921
207909912623,62cyclictest0-21swapper/2822:42:4921
207589912628,65cyclictest0-21swapper/2320:35:1216
207589912628,57cyclictest0-21swapper/2319:40:2616
20752991263,70cyclictest0-21swapper/2223:00:0215
207269912641,84cyclictest0-21swapper/1822:55:0810
207269912641,84cyclictest0-21swapper/1822:55:0710
207199912627,67cyclictest0-21swapper/1723:38:589
207199912627,67cyclictest0-21swapper/1723:38:589
207199912626,66cyclictest0-21swapper/1722:31:549
206399912628,70cyclictest0-21swapper/519:25:1227
206399912628,69cyclictest0-21swapper/519:53:1427
206399912628,62cyclictest0-21swapper/521:44:5527
206399912623,63cyclictest0-21swapper/523:27:3327
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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