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2026-07-20 - 09:03
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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 50 highest latencies:
System rackcslot8.osadl.org (updated Mon Jul 20, 2026 00:49:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
418699364165,1cyclictest151rcu_preempt22:41:0513
418699364165,1cyclictest151rcu_preempt22:41:0413
418699363165,1cyclictest151rcu_preempt22:18:0313
418699363165,1cyclictest151rcu_preempt22:18:0313
418699363165,1cyclictest151rcu_preempt22:00:2513
418699363165,1cyclictest151rcu_preempt22:00:2513
330891297289,6phc2sys0-21swapper/219:09:2812
3273912940,286ptp4l0-21swapper/119:09:581
41869923060,97cyclictest0-21swapper/2000:05:3113
41869920331,102cyclictest0-21swapper/2023:02:5713
41869920331,102cyclictest0-21swapper/2023:02:5713
418699183166,1cyclictest151rcu_preempt21:30:0113
41869917120,108cyclictest0-21swapper/2020:55:1313
41869916910,138cyclictest0-21swapper/2000:29:1413
24742169162,6sleep220-21swapper/2219:05:3915
41869915962,73cyclictest0-21swapper/2021:05:2313
41869915960,94cyclictest0-21swapper/2021:18:2913
40429915833,83cyclictest0-21swapper/221:51:3012
40429915639,74cyclictest0-21swapper/221:30:2312
41869915355,59cyclictest0-21swapper/2023:45:2113
41869915227,101cyclictest0-21swapper/2022:05:4613
41869915227,101cyclictest0-21swapper/2022:05:4613
40429914724,80cyclictest0-21swapper/223:52:4912
41869914519,117cyclictest0-21swapper/2022:20:1013
41869914519,117cyclictest0-21swapper/2022:20:1013
4255991440,89cyclictest0-21swapper/2920:33:5422
41869914144,50cyclictest0-21swapper/2022:33:0913
41869914144,50cyclictest0-21swapper/2022:33:0913
41869914038,102cyclictest137-21ksoftirqd/2000:16:2413
42559913851,58cyclictest0-21swapper/2922:40:5122
42559913851,58cyclictest0-21swapper/2922:40:5122
41869913885,53cyclictest137-21ksoftirqd/2021:24:4113
4065991380,85cyclictest0-21swapper/522:17:4427
4065991380,85cyclictest0-21swapper/522:17:4427
42559913752,47cyclictest0-21swapper/2921:45:1622
42559913741,61cyclictest0-21swapper/2923:00:3822
42559913741,61cyclictest0-21swapper/2923:00:3822
40429913748,58cyclictest0-21swapper/222:03:3112
40429913748,58cyclictest0-21swapper/222:03:3112
40429913745,62cyclictest0-21swapper/221:43:1312
40429913720,116cyclictest151rcu_preempt23:17:4912
40429913720,116cyclictest151rcu_preempt23:17:4912
42559913652,56cyclictest0-21swapper/2921:56:4522
42559913652,56cyclictest0-21swapper/2921:56:4422
42559913620,75cyclictest0-21swapper/2921:44:3122
40429913650,54cyclictest0-21swapper/221:20:1312
40429913647,67cyclictest0-21swapper/223:57:0612
42559913553,62cyclictest0-21swapper/2900:32:0122
42559913550,59cyclictest0-21swapper/2923:23:3722
40429913550,56cyclictest0-21swapper/219:20:1612
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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