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2025-11-20 - 18:09
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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 Thu Nov 20, 2025 12:49:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
102729943943,198cyclictest151rcu_preempt09:30:120
102729943943,198cyclictest151rcu_preempt09:30:110
1042799333134,1cyclictest151rcu_preempt10:13:5317
1047399331134,2cyclictest151rcu_preempt10:56:2825
1047399331134,2cyclictest151rcu_preempt10:56:2725
1042799331133,1cyclictest151rcu_preempt09:54:1017
1042799331133,1cyclictest151rcu_preempt09:54:1017
2482912650,256ptp4l0-21swapper/107:05:061
10282992005,162cyclictest0-21swapper/209:17:3912
10282991635,121cyclictest0-21swapper/211:09:5312
10282991635,121cyclictest0-21swapper/211:09:5312
10282991635,115cyclictest0-21swapper/209:14:2712
103789916247,111cyclictest0-21swapper/1610:40:168
103789916247,111cyclictest0-21swapper/1610:40:158
103039916131,80cyclictest0-21swapper/609:35:3128
103789915848,83cyclictest0-21swapper/1611:35:138
103789915848,83cyclictest0-21swapper/1611:35:138
10282991525,88cyclictest0-21swapper/209:27:4812
103789915040,97cyclictest0-21swapper/1610:20:148
103789915040,97cyclictest0-21swapper/1610:20:138
10282991505,96cyclictest0-21swapper/211:59:3612
10282991505,89cyclictest0-21swapper/207:45:1412
10338991470,92cyclictest0-21swapper/1109:31:103
10338991470,92cyclictest0-21swapper/1109:31:103
1027799146105,3cyclictest151rcu_preempt10:31:081
1027799146105,3cyclictest151rcu_preempt10:31:081
10338991450,87cyclictest0-21swapper/1110:10:433
103789914332,109cyclictest0-21swapper/1609:35:228
10338991430,85cyclictest0-21swapper/1111:00:253
10338991430,85cyclictest0-21swapper/1111:00:253
10338991420,83cyclictest0-21swapper/1110:31:333
10338991420,83cyclictest0-21swapper/1110:31:333
10303991420,85cyclictest0-21swapper/610:08:2828
103789914131,95cyclictest0-21swapper/1610:25:178
103789914131,95cyclictest0-21swapper/1610:25:168
103789914131,105cyclictest0-21swapper/1611:00:218
103789914131,105cyclictest0-21swapper/1611:00:208
103389914121,74cyclictest0-21swapper/1109:25:173
103789914030,100cyclictest0-21swapper/1610:10:488
103459914015,80cyclictest0-21swapper/1207:50:004
10338991400,83cyclictest0-21swapper/1111:27:393
10338991400,83cyclictest0-21swapper/1111:27:383
103459913822,85cyclictest0-21swapper/1208:45:154
10338991380,80cyclictest0-21swapper/1110:21:563
10338991380,80cyclictest0-21swapper/1110:21:563
10290991380,86cyclictest0-21swapper/409:38:5226
10338991370,80cyclictest0-21swapper/1107:45:223
10338991360,81cyclictest0-21swapper/1112:35:003
103039913653,58cyclictest0-21swapper/608:34:3728
103039913647,61cyclictest0-21swapper/612:02:1828
10290991360,82cyclictest0-21swapper/407:40:1426
104349913552,60cyclictest0-21swapper/2511:38:1918
104349913552,60cyclictest0-21swapper/2511:38:1918
104349913544,61cyclictest0-21swapper/2511:51:2618
104349913525,67cyclictest0-21swapper/2510:19:3118
104349913525,67cyclictest0-21swapper/2510:19:3118
103389913555,60cyclictest0-21swapper/1108:45:123
103039913551,63cyclictest0-21swapper/609:28:2428
103039913551,56cyclictest0-21swapper/611:33:5928
103039913550,59cyclictest0-21swapper/611:54:1728
103039913534,67cyclictest0-21swapper/611:59:3928
103039913529,72cyclictest0-21swapper/610:28:5828
103039913529,72cyclictest0-21swapper/610:28:5828
103039913529,69cyclictest0-21swapper/608:53:0828
103039913528,70cyclictest0-21swapper/612:37:3628
103039913528,69cyclictest0-21swapper/612:10:2128
104349913445,59cyclictest0-21swapper/2509:08:5718
103789913425,71cyclictest0-21swapper/1609:40:168
103389913430,60cyclictest0-21swapper/1108:25:103
10338991340,81cyclictest0-21swapper/1109:43:593
10338991340,81cyclictest0-21swapper/1107:30:223
103039913427,69cyclictest0-21swapper/611:35:1428
103039913427,69cyclictest0-21swapper/611:35:1428
104349913329,68cyclictest0-21swapper/2512:26:1018
104349913328,68cyclictest0-21swapper/2508:55:0418
104349913328,67cyclictest0-21swapper/2510:56:2318
104349913328,67cyclictest0-21swapper/2510:56:2218
104349913327,69cyclictest0-21swapper/2512:32:0218
104349913327,69cyclictest0-21swapper/2509:47:5818
104349913327,69cyclictest0-21swapper/2509:47:5818
103789913324,70cyclictest0-21swapper/1612:30:128
103039913337,66cyclictest0-21swapper/612:27:5928
103039913329,73cyclictest0-21swapper/610:30:3428
103039913329,73cyclictest0-21swapper/610:30:3428
103039913329,69cyclictest0-21swapper/608:40:0928
104349913241,61cyclictest0-21swapper/2511:56:4718
104349913229,70cyclictest0-21swapper/2511:26:5018
104349913229,70cyclictest0-21swapper/2511:26:5018
104349913228,71cyclictest0-21swapper/2509:12:0918
104349913228,69cyclictest0-21swapper/2511:09:1218
104349913228,69cyclictest0-21swapper/2511:09:1218
104349913228,67cyclictest0-21swapper/2509:21:4718
104349913227,69cyclictest0-21swapper/2511:47:0918
104349913227,69cyclictest0-21swapper/2511:43:4118
104349913226,69cyclictest0-21swapper/2510:30:4418
104349913226,69cyclictest0-21swapper/2510:30:4318
103389913233,61cyclictest0-21swapper/1111:08:593
103389913233,61cyclictest0-21swapper/1111:08:583
103389913230,65cyclictest0-21swapper/1107:15:003
103389913228,61cyclictest0-21swapper/1112:15:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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