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2026-03-24 - 12:03
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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 100 highest latencies:
System rackcslot8.osadl.org (updated Tue Mar 24, 2026 00:49:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
78189926467,1cyclictest151rcu_preempt23:50:1314
773499225142,1cyclictest151rcu_preempt22:44:3031
3273911880,180ptp4l0-21swapper/119:06:421
78769918348,92cyclictest0-21swapper/2923:21:0922
78769916957,66cyclictest191-21ksoftirqd/2921:17:4322
78769916957,66cyclictest191-21ksoftirqd/2921:17:4222
78769916335,82cyclictest0-21swapper/2921:54:2122
78769916335,82cyclictest0-21swapper/2921:54:2122
7891991626,115cyclictest0-21swapper/3121:30:0225
7891991626,115cyclictest0-21swapper/3121:30:0125
78139916228,104cyclictest0-21swapper/2000:06:4713
7782991572,115cyclictest0-21swapper/1621:18:218
7782991572,115cyclictest0-21swapper/1621:18:218
76899915327,124cyclictest0-21swapper/322:18:5723
76899915327,124cyclictest0-21swapper/322:18:5623
7891991526,107cyclictest0-21swapper/3100:00:1225
76899915239,76cyclictest0-21swapper/320:03:4423
76899915229,108cyclictest0-21swapper/323:25:1523
77829914937,73cyclictest0-21swapper/1621:29:158
77829914937,73cyclictest0-21swapper/1621:29:148
76899914942,64cyclictest0-21swapper/323:45:1923
78719914838,89cyclictest18820-21sh22:30:1421
78719914838,89cyclictest18820-21sh22:30:1321
78719914738,70cyclictest0-21swapper/2823:50:2021
7891991460,87cyclictest0-21swapper/3100:26:2425
7782991462,90cyclictest0-21swapper/1623:33:178
7876991450,87cyclictest0-21swapper/2919:39:5422
7689991450,85cyclictest0-21swapper/300:28:3623
78719914434,102cyclictest0-21swapper/2800:33:0621
76899914430,63cyclictest0-21swapper/322:05:2323
76899914430,63cyclictest0-21swapper/322:05:2223
7891991436,93cyclictest0-21swapper/3122:55:0125
7891991436,81cyclictest0-21swapper/3121:17:4525
7891991436,81cyclictest0-21swapper/3121:17:4425
7876991420,84cyclictest0-21swapper/2921:28:2322
7876991420,84cyclictest0-21swapper/2921:28:2322
7876991420,81cyclictest0-21swapper/2921:07:3222
78719914231,108cyclictest0-21swapper/2822:05:2021
78719914231,108cyclictest0-21swapper/2822:05:1921
7876991410,85cyclictest0-21swapper/2923:06:1122
77989914159,51cyclictest0-21swapper/1821:19:0810
77989914159,51cyclictest0-21swapper/1821:19:0710
77489914129,111cyclictest0-21swapper/1119:44:423
78769914043,59cyclictest0-21swapper/2922:03:4022
78769914043,59cyclictest0-21swapper/2922:03:3922
78769914039,62cyclictest0-21swapper/2900:14:5522
7876991400,85cyclictest0-21swapper/2922:10:5222
7876991400,85cyclictest0-21swapper/2922:10:5222
78139914040,87cyclictest0-21swapper/2022:39:0713
78769913947,58cyclictest0-21swapper/2920:35:2922
78769913929,72cyclictest0-21swapper/2922:46:4722
7876991390,84cyclictest0-21swapper/2922:55:3122
78719913929,80cyclictest0-21swapper/2821:35:2421
78719913929,80cyclictest0-21swapper/2821:35:2321
78719913928,92cyclictest0-21swapper/2800:05:0021
7884991389,106cyclictest0-21swapper/3000:35:1724
78769913850,59cyclictest0-21swapper/2922:52:1822
78769913847,63cyclictest0-21swapper/2922:37:0422
78769913836,62cyclictest0-21swapper/2922:19:2622
78769913836,62cyclictest0-21swapper/2922:19:2622
78769913828,67cyclictest0-21swapper/2919:16:5722
7876991380,82cyclictest0-21swapper/2920:20:3122
7884991379,127cyclictest0-21swapper/3021:20:2324
7884991379,127cyclictest0-21swapper/3021:20:2324
7884991379,111cyclictest0-21swapper/3021:15:0324
7884991379,111cyclictest0-21swapper/3021:15:0224
7884991379,104cyclictest0-21swapper/3000:14:0524
78769913747,58cyclictest0-21swapper/2900:01:1422
78769913727,70cyclictest0-21swapper/2923:42:0122
7876991370,87cyclictest0-21swapper/2921:14:3022
7876991370,87cyclictest0-21swapper/2921:14:2922
7876991370,82cyclictest0-21swapper/2923:58:3422
7876991370,81cyclictest0-21swapper/2920:45:0622
7876991370,80cyclictest0-21swapper/2921:20:0922
7876991370,80cyclictest0-21swapper/2921:20:0922
7884991369,87cyclictest0-21swapper/3022:31:2724
7884991369,87cyclictest0-21swapper/3022:31:2724
7884991369,111cyclictest0-21swapper/3023:35:0424
78769913647,57cyclictest0-21swapper/2900:37:3522
78769913642,59cyclictest0-21swapper/2920:17:0322
78769913639,59cyclictest0-21swapper/2922:27:4222
78769913639,59cyclictest0-21swapper/2922:27:4222
78769913629,70cyclictest0-21swapper/2923:31:1922
78769913629,65cyclictest0-21swapper/2921:45:2922
78769913629,65cyclictest0-21swapper/2921:45:2922
7876991360,86cyclictest0-21swapper/2900:06:3522
77059913619,17cyclictest0-21swapper/520:00:2227
78769913538,61cyclictest0-21swapper/2922:24:3022
78769913538,61cyclictest0-21swapper/2922:24:3022
78769913528,62cyclictest0-21swapper/2922:30:2322
78769913528,62cyclictest0-21swapper/2922:30:2322
78769913526,64cyclictest0-21swapper/2900:16:4522
78769913525,74cyclictest0-21swapper/2922:05:3322
78769913525,74cyclictest0-21swapper/2922:05:3222
7876991350,83cyclictest0-21swapper/2923:02:5922
7876991350,82cyclictest0-21swapper/2920:07:0922
77059913519,94cyclictest0-21swapper/522:13:4227
77059913519,94cyclictest0-21swapper/522:13:4127
77059913519,104cyclictest0-21swapper/500:20:2427
78769913427,63cyclictest0-21swapper/2900:32:4622
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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