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2026-05-06 - 22:41
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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 Wed May 06, 2026 12:49:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913130,304ptp4l0-21swapper/107:09:101
291069927374,1cyclictest151rcu_preempt12:01:411
292209918228,86cyclictest0-21swapper/2410:00:1917
330891161153,6phc2sys0-21swapper/207:06:1212
29142991598,117cyclictest0-21swapper/1010:01:532
291149914432,110cyclictest0-21swapper/310:56:3123
291149914432,110cyclictest0-21swapper/310:56:3123
29138991434,129cyclictest0-21swapper/909:23:4031
29138991434,104cyclictest0-21swapper/909:15:2231
291019914314,65cyclictest13-21ksoftirqd/012:32:180
29138991424,124cyclictest0-21swapper/909:48:2931
29138991424,109cyclictest0-21swapper/911:52:3031
29138991424,107cyclictest0-21swapper/911:05:2831
29138991424,107cyclictest0-21swapper/911:05:2831
29138991424,107cyclictest0-21swapper/907:55:0131
29138991420,83cyclictest0-21swapper/912:30:5931
291019914244,61cyclictest151rcu_preempt12:11:510
29256991410,86cyclictest0-21swapper/2911:19:4222
29256991410,86cyclictest0-21swapper/2911:19:4122
291149914031,67cyclictest0-21swapper/310:10:1923
29138991394,100cyclictest0-21swapper/912:05:2031
291019913967,7cyclictest0-21swapper/010:42:060
291019913967,7cyclictest0-21swapper/010:42:060
291149913827,83cyclictest0-21swapper/309:40:2323
291479913453,58cyclictest0-21swapper/1110:12:043
29138991344,95cyclictest0-21swapper/910:47:5431
29138991344,95cyclictest0-21swapper/910:47:5431
291479913353,64cyclictest0-21swapper/1111:06:333
291479913353,64cyclictest0-21swapper/1111:06:333
291479913327,65cyclictest0-21swapper/1111:10:183
291479913327,65cyclictest0-21swapper/1111:10:183
291479913227,68cyclictest0-21swapper/1108:10:113
291479913227,65cyclictest0-21swapper/1108:50:173
2917199131130,1cyclictest151rcu_preempt10:27:079
2917199131130,1cyclictest151rcu_preempt10:27:079
291479913146,54cyclictest0-21swapper/1109:14:523
291479913126,58cyclictest0-21swapper/1111:30:363
29138991314,97cyclictest0-21swapper/912:24:5931
29213991300,86cyclictest0-21swapper/2308:18:5816
291479913049,55cyclictest0-21swapper/1111:50:233
291479913027,73cyclictest0-21swapper/1111:29:013
291479913027,73cyclictest0-21swapper/1111:29:003
291479913027,67cyclictest0-21swapper/1108:35:203
291479913027,66cyclictest0-21swapper/1111:40:143
291479913017,65cyclictest0-21swapper/1111:18:523
291479913017,65cyclictest0-21swapper/1111:18:523
292029912950,30cyclictest151rcu_preempt09:54:0415
292029912950,30cyclictest151rcu_preempt09:54:0315
291479912941,67cyclictest0-21swapper/1110:01:593
291479912928,67cyclictest0-21swapper/1110:15:163
291479912928,67cyclictest0-21swapper/1110:15:153
291479912927,65cyclictest0-21swapper/1109:36:463
291479912828,66cyclictest0-21swapper/1108:34:163
291479912828,59cyclictest0-21swapper/1109:15:243
291479912730,73cyclictest0-21swapper/1108:27:563
291479912723,60cyclictest0-21swapper/1110:25:303
291479912723,60cyclictest0-21swapper/1110:25:303
291019912790,37cyclictest13-21ksoftirqd/010:26:370
291019912790,37cyclictest13-21ksoftirqd/010:26:370
291479912630,69cyclictest0-21swapper/1109:27:253
291479912629,68cyclictest0-21swapper/1111:20:283
291479912629,68cyclictest0-21swapper/1111:20:273
291479912627,70cyclictest0-21swapper/1109:25:003
291479912541,51cyclictest0-21swapper/1109:53:533
291479912541,51cyclictest0-21swapper/1109:53:523
291479912527,64cyclictest0-21swapper/1111:55:133
292569912469,54cyclictest0-21swapper/2907:30:1722
291479912462,61cyclictest0-21swapper/1112:32:373
291019912426,31cyclictest0-21swapper/009:53:320
291019912426,31cyclictest0-21swapper/009:53:310
29256991230,76cyclictest0-21swapper/2911:57:3922
291479912348,74cyclictest0-21swapper/1112:05:213
291479912329,72cyclictest0-21swapper/1110:31:503
291479912329,72cyclictest0-21swapper/1110:31:493
291479912326,57cyclictest0-21swapper/1112:35:183
291479912230,72cyclictest0-21swapper/1110:35:023
291479912230,72cyclictest0-21swapper/1110:35:023
291479912227,69cyclictest0-21swapper/1112:00:013
291019912244,50cyclictest0-21swapper/011:34:290
29101991220,69cyclictest0-21swapper/010:55:030
29101991220,69cyclictest0-21swapper/010:55:030
292569912138,57cyclictest0-21swapper/2910:25:3022
292569912138,57cyclictest0-21swapper/2910:25:2922
29142991218,91cyclictest0-21swapper/1009:35:422
29142991217,113cyclictest0-21swapper/1010:40:542
29142991217,113cyclictest0-21swapper/1010:40:542
291019912152,56cyclictest0-21swapper/011:56:080
291019912131,68cyclictest0-21swapper/012:29:300
29213991200,76cyclictest0-21swapper/2309:20:2516
291479912032,69cyclictest0-21swapper/1107:45:053
29142991207,95cyclictest0-21swapper/1011:25:162
29142991207,95cyclictest0-21swapper/1011:25:162
29142991207,76cyclictest0-21swapper/1010:18:332
29142991207,76cyclictest0-21swapper/1010:18:332
291019912051,50cyclictest0-21swapper/009:37:240
291019912039,57cyclictest0-21swapper/011:43:030
291019912036,56cyclictest0-21swapper/009:28:050
292569911942,52cyclictest0-21swapper/2908:55:5522
292569911925,63cyclictest0-21swapper/2910:33:2822
292569911925,63cyclictest0-21swapper/2910:33:2822
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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