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2026-06-08 - 13:32
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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 Mon Jun 08, 2026 00:49:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912590,251ptp4l0-21swapper/119:08:241
3273912590,251ptp4l0-21swapper/119:08:241
330891228221,6phc2sys0-21swapper/219:07:4812
330891228221,6phc2sys0-21swapper/219:07:4812
28132991739,134cyclictest0-21swapper/2621:21:2119
28132991739,121cyclictest0-21swapper/2623:09:1919
280989917326,145cyclictest0-21swapper/2122:36:0714
280989917326,103cyclictest0-21swapper/2122:07:1414
280989917225,109cyclictest0-21swapper/2121:10:3514
28132991719,161cyclictest0-21swapper/2622:11:0319
280989916620,123cyclictest0-21swapper/2122:13:3514
281699915858,99cyclictest203-21ksoftirqd/3123:03:3225
281699915858,99cyclictest203-21ksoftirqd/3123:03:3125
280989915326,80cyclictest0-21swapper/2121:23:5614
281699915025,84cyclictest0-21swapper/3121:50:1825
28046991500,87cyclictest0-21swapper/1422:16:126
281699914987,61cyclictest203-21ksoftirqd/3122:31:5925
281699914946,63cyclictest0-21swapper/3123:56:5825
281699914946,63cyclictest0-21swapper/3123:56:5825
281699914623,68cyclictest0-21swapper/3100:30:0625
281699914623,68cyclictest0-21swapper/3100:30:0625
28169991440,84cyclictest0-21swapper/3120:20:1325
28132991429,79cyclictest0-21swapper/2622:19:3719
28046991420,85cyclictest0-21swapper/1423:46:006
28132991419,90cyclictest0-21swapper/2619:15:1519
28132991419,35cyclictest0-21swapper/2619:41:2819
28169991400,86cyclictest0-21swapper/3121:12:0625
281409914027,66cyclictest0-21swapper/2723:57:4820
281409914027,66cyclictest0-21swapper/2723:57:4720
28169991390,84cyclictest0-21swapper/3121:15:0125
280989913916,95cyclictest0-21swapper/2121:38:2214
281409913849,63cyclictest0-21swapper/2700:18:1720
281409913849,63cyclictest0-21swapper/2700:18:1720
281409913830,67cyclictest0-21swapper/2700:30:1920
281409913830,67cyclictest0-21swapper/2700:30:1820
281409913828,67cyclictest0-21swapper/2721:59:2020
281059913859,48cyclictest0-21swapper/2222:45:3815
280029913876,62cyclictest64-21ksoftirqd/822:48:1730
281699913728,71cyclictest0-21swapper/3120:05:1825
280989913725,68cyclictest0-21swapper/2122:04:1914
281699913622,68cyclictest0-21swapper/3122:18:0525
28169991360,76cyclictest0-21swapper/3120:00:1325
281409913629,63cyclictest0-21swapper/2722:23:5420
28169991350,80cyclictest0-21swapper/3120:55:1525
28169991350,80cyclictest0-21swapper/3100:28:1525
28169991350,80cyclictest0-21swapper/3100:28:1525
281409913532,60cyclictest0-21swapper/2720:35:2520
281699913454,63cyclictest0-21swapper/3119:15:2025
281699913428,67cyclictest0-21swapper/3123:40:2425
281699913428,67cyclictest0-21swapper/3123:40:2425
281409913429,63cyclictest0-21swapper/2700:35:2320
281409913429,63cyclictest0-21swapper/2700:35:2320
280989913423,75cyclictest0-21swapper/2121:31:4214
281699913328,67cyclictest0-21swapper/3119:39:0725
281409913345,65cyclictest0-21swapper/2723:52:0620
281409913345,65cyclictest0-21swapper/2723:52:0520
281409913327,63cyclictest0-21swapper/2722:00:2420
279819913350,60cyclictest0-21swapper/422:22:4726
279819913338,62cyclictest0-21swapper/421:19:1226
281699913229,73cyclictest0-21swapper/3119:30:3525
281699913229,71cyclictest0-21swapper/3122:25:0325
281699913228,66cyclictest0-21swapper/3122:47:2925
281699913228,65cyclictest0-21swapper/3123:22:1425
281699913228,65cyclictest0-21swapper/3123:22:1425
281699913227,63cyclictest0-21swapper/3123:45:1225
281409913227,69cyclictest0-21swapper/2722:17:2920
281409913227,62cyclictest0-21swapper/2700:04:2320
281409913227,62cyclictest0-21swapper/2700:04:2320
279819913227,62cyclictest0-21swapper/421:58:2926
281699913132,76cyclictest0-21swapper/3123:36:3925
281699913129,63cyclictest0-21swapper/3123:25:2625
281699913126,64cyclictest0-21swapper/3123:05:4025
281699913126,64cyclictest0-21swapper/3100:37:0425
281699913126,64cyclictest0-21swapper/3100:37:0325
281409913130,67cyclictest0-21swapper/2722:57:0220
281409913129,67cyclictest0-21swapper/2723:00:1620
281409913129,67cyclictest0-21swapper/2723:00:1520
279819913153,61cyclictest0-21swapper/422:12:3926
281699913086,43cyclictest32339-21kworker/u64:022:20:1225
281699913033,76cyclictest0-21swapper/3122:12:4525
281699913030,67cyclictest0-21swapper/3121:44:2525
281409913031,67cyclictest0-21swapper/2721:50:1320
279819913029,70cyclictest0-21swapper/423:45:1926
279819913026,64cyclictest0-21swapper/420:00:2026
279819913024,61cyclictest0-21swapper/421:52:1926
279819913023,72cyclictest0-21swapper/400:01:4026
279819913023,72cyclictest0-21swapper/400:01:4026
281699912930,62cyclictest0-21swapper/3120:14:3725
281699912928,60cyclictest0-21swapper/3122:35:1225
281699912925,64cyclictest0-21swapper/3119:55:1125
281699912918,74cyclictest0-21swapper/3121:48:0925
28169991290,78cyclictest0-21swapper/3121:35:2025
279819912928,69cyclictest0-21swapper/422:55:2326
279819912928,68cyclictest0-21swapper/423:25:2026
279819912927,69cyclictest0-21swapper/422:45:1526
279819912927,65cyclictest0-21swapper/422:28:0626
281699912839,67cyclictest0-21swapper/3119:53:1625
281699912814,68cyclictest0-21swapper/3121:05:4225
281409912828,65cyclictest0-21swapper/2721:35:3720
281409912827,59cyclictest0-21swapper/2722:45:1720
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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