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2026-03-13 - 21:37
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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 Fri Mar 13, 2026 12:49:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912730,266ptp4l0-21swapper/107:05:411
3273912730,266ptp4l0-21swapper/107:05:411
330891261249,9phc2sys0-21swapper/207:05:1612
330891261249,9phc2sys0-21swapper/207:05:1612
3096299218153,1cyclictest151rcu_preempt12:22:0224
3096299218153,1cyclictest151rcu_preempt12:22:0224
308959921417,1cyclictest151rcu_preempt11:45:2113
308959921417,1cyclictest151rcu_preempt11:45:2013
30822991800,87cyclictest0-21swapper/1010:15:192
309089916733,56cyclictest0-21swapper/2209:20:1115
308649915018,122cyclictest0-21swapper/1610:33:438
309629914928,90cyclictest0-21swapper/3010:53:5124
309629914928,120cyclictest0-21swapper/3011:58:3224
309629914928,120cyclictest0-21swapper/3011:58:3124
309629914828,73cyclictest0-21swapper/3010:45:1824
309629914827,115cyclictest0-21swapper/3010:04:0824
309629914825,91cyclictest0-21swapper/3011:27:3224
309629914825,91cyclictest0-21swapper/3011:27:3124
309629914732,112cyclictest0-21swapper/3012:17:1424
309629914732,112cyclictest0-21swapper/3012:17:1324
30822991470,82cyclictest0-21swapper/1010:46:352
309629914628,117cyclictest32757-21kworker/u64:211:33:5624
309629914626,92cyclictest0-21swapper/3009:28:2024
30929991450,84cyclictest0-21swapper/2511:31:4318
308649914524,120cyclictest0-21swapper/1611:31:558
30844991455,81cyclictest0-21swapper/1309:40:215
30822991450,85cyclictest0-21swapper/1011:12:142
281182145135,7sleep250-21swapper/2507:05:2018
281182145135,7sleep250-21swapper/2507:05:1918
308649914424,115cyclictest0-21swapper/1609:49:178
309629914323,119cyclictest0-21swapper/3011:15:1324
309629914321,121cyclictest0-21swapper/3008:46:2624
30822991430,88cyclictest0-21swapper/1009:52:032
30822991430,84cyclictest0-21swapper/1011:17:022
309629914220,109cyclictest0-21swapper/3011:10:1724
30822991420,84cyclictest0-21swapper/1007:50:132
309699914120,40cyclictest0-21swapper/3109:00:1725
308649914130,110cyclictest0-21swapper/1611:15:198
30784991410,88cyclictest0-21swapper/512:05:2427
30784991410,88cyclictest0-21swapper/512:05:2327
309299914054,61cyclictest0-21swapper/2510:19:0118
30822991400,86cyclictest0-21swapper/1010:05:122
30822991400,83cyclictest0-21swapper/1009:05:182
30822991400,82cyclictest0-21swapper/1012:20:062
30822991400,82cyclictest0-21swapper/1012:20:062
30807991400,83cyclictest0-21swapper/812:26:0630
30807991400,83cyclictest0-21swapper/812:26:0630
307849913954,57cyclictest0-21swapper/511:50:0527
307849913954,57cyclictest0-21swapper/511:50:0527
309699913831,31cyclictest0-21swapper/3107:50:0225
309699913825,57cyclictest0-21swapper/3111:00:1625
309299913848,61cyclictest0-21swapper/2512:24:3818
309299913848,61cyclictest0-21swapper/2512:24:3718
30822991380,79cyclictest0-21swapper/1010:35:202
309299913750,56cyclictest0-21swapper/2508:15:2118
309299913748,57cyclictest0-21swapper/2507:40:1818
309299913742,58cyclictest0-21swapper/2512:17:4118
309299913742,58cyclictest0-21swapper/2512:17:4018
308649913754,59cyclictest0-21swapper/1612:09:198
308649913754,59cyclictest0-21swapper/1612:09:188
308229913743,57cyclictest0-21swapper/1009:57:242
309299913657,62cyclictest0-21swapper/2509:29:1018
309299913655,63cyclictest0-21swapper/2509:17:3318
309299913652,60cyclictest0-21swapper/2510:43:0518
309299913646,61cyclictest0-21swapper/2510:48:4218
309299913645,58cyclictest0-21swapper/2512:12:5318
309299913645,58cyclictest0-21swapper/2512:12:5218
309299913629,73cyclictest0-21swapper/2510:37:1118
308649913649,53cyclictest0-21swapper/1608:52:068
308649913644,58cyclictest0-21swapper/1611:26:038
308649913644,58cyclictest0-21swapper/1611:26:028
308649913631,71cyclictest0-21swapper/1611:43:528
308649913631,71cyclictest0-21swapper/1611:43:528
308649913628,69cyclictest0-21swapper/1610:17:448
308649913625,67cyclictest0-21swapper/1607:51:118
308649913617,73cyclictest0-21swapper/1611:08:558
308229913641,62cyclictest0-21swapper/1009:32:482
308229913630,62cyclictest0-21swapper/1012:28:402
308229913630,62cyclictest0-21swapper/1012:28:392
308229913627,62cyclictest0-21swapper/1010:25:122
30822991360,82cyclictest0-21swapper/1007:20:182
30822991360,80cyclictest0-21swapper/1012:32:232
30822991360,80cyclictest0-21swapper/1012:32:232
307849913653,58cyclictest0-21swapper/511:45:1627
307849913653,58cyclictest0-21swapper/511:45:1627
309299913544,58cyclictest0-21swapper/2511:40:3218
309299913544,58cyclictest0-21swapper/2511:40:3218
309299913543,59cyclictest0-21swapper/2511:55:4618
309299913543,59cyclictest0-21swapper/2511:55:4618
309299913541,68cyclictest0-21swapper/2510:50:3318
309299913540,61cyclictest0-21swapper/2512:08:3618
309299913540,61cyclictest0-21swapper/2512:08:3618
309299913533,67cyclictest0-21swapper/2509:43:4518
308649913554,60cyclictest0-21swapper/1610:55:028
308649913530,70cyclictest0-21swapper/1611:04:068
308649913530,66cyclictest0-21swapper/1609:15:468
308229913546,57cyclictest0-21swapper/1011:55:312
308229913546,57cyclictest0-21swapper/1011:55:312
307849913549,58cyclictest0-21swapper/512:11:4927
307849913549,58cyclictest0-21swapper/512:11:4927
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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