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2026-04-27 - 17:54
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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 Apr 27, 2026 12:49:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913200,312ptp4l0-21swapper/107:06:391
215369925720,44cyclictest151rcu_preempt10:32:251
21586991730,168cyclictest151rcu_preempt10:14:435
203182165158,6sleep290-21swapper/2907:09:1822
215869915934,92cyclictest0-21swapper/1312:01:375
21622991565,123cyclictest151rcu_preempt10:25:5313
21586991540,148cyclictest151rcu_preempt07:28:005
21586991540,148cyclictest151rcu_preempt07:28:005
215699914352,61cyclictest0-21swapper/911:26:1731
215869914230,83cyclictest0-21swapper/1311:28:295
21639991400,81cyclictest0-21swapper/2412:21:0517
215699914053,56cyclictest0-21swapper/912:15:5931
215699914048,62cyclictest0-21swapper/911:19:5931
21639991390,86cyclictest0-21swapper/2411:45:1617
215869913931,79cyclictest0-21swapper/1310:08:065
216399913824,72cyclictest0-21swapper/2409:52:1317
21626991380,88cyclictest0-21swapper/2111:22:4414
215869913825,70cyclictest0-21swapper/1309:58:415
215699913843,59cyclictest0-21swapper/910:02:2231
216399913723,70cyclictest0-21swapper/2409:19:5317
215699913748,58cyclictest0-21swapper/909:47:4031
215699913729,69cyclictest0-21swapper/911:44:0031
216399913639,65cyclictest0-21swapper/2409:48:3117
216399913628,67cyclictest0-21swapper/2411:52:0517
216399913626,64cyclictest0-21swapper/2411:56:5217
215699913642,63cyclictest0-21swapper/909:16:5631
215699913642,61cyclictest0-21swapper/909:29:1431
215699913629,70cyclictest0-21swapper/909:58:3731
215699913629,69cyclictest0-21swapper/909:10:4731
216399913553,58cyclictest0-21swapper/2412:17:3817
215869913511,120cyclictest151rcu_preempt12:36:555
215699913532,65cyclictest0-21swapper/909:42:3531
215699913530,74cyclictest0-21swapper/910:51:0031
215699913530,70cyclictest0-21swapper/910:08:0031
215699913530,65cyclictest0-21swapper/908:01:0331
215699913530,65cyclictest0-21swapper/908:01:0331
215699913529,75cyclictest0-21swapper/910:40:1931
215699913529,75cyclictest0-21swapper/907:10:1831
215699913529,75cyclictest0-21swapper/907:10:1731
215699913529,71cyclictest0-21swapper/911:57:4931
215699913529,71cyclictest0-21swapper/911:01:4131
215699913529,70cyclictest0-21swapper/907:32:4431
215699913529,70cyclictest0-21swapper/907:32:4431
215699913528,67cyclictest0-21swapper/912:20:4831
215699913528,63cyclictest0-21swapper/908:05:5231
216399913449,64cyclictest0-21swapper/2410:56:2717
215869913461,59cyclictest151rcu_preempt09:18:365
215699913452,60cyclictest0-21swapper/910:11:2731
215699913442,59cyclictest0-21swapper/910:37:3831
215699913431,75cyclictest0-21swapper/908:25:0631
215699913431,73cyclictest0-21swapper/911:22:3231
215699913430,72cyclictest0-21swapper/910:30:1631
215699913430,67cyclictest0-21swapper/911:05:5831
215699913428,71cyclictest0-21swapper/911:35:2331
215699913428,68cyclictest0-21swapper/912:35:0131
216399913335,60cyclictest0-21swapper/2410:25:5717
215699913331,71cyclictest0-21swapper/910:17:2031
215699913330,76cyclictest0-21swapper/912:07:5831
215699913329,63cyclictest0-21swapper/910:55:1831
215699913327,65cyclictest0-21swapper/910:49:5631
215699913326,62cyclictest0-21swapper/907:56:4731
215699913326,62cyclictest0-21swapper/907:56:4731
216399913252,64cyclictest0-21swapper/2412:00:3117
216399913247,54cyclictest0-21swapper/2407:42:3817
216399913247,54cyclictest0-21swapper/2407:42:3817
216399913230,70cyclictest0-21swapper/2408:27:5317
216399913226,63cyclictest0-21swapper/2411:12:1217
216269913251,70cyclictest0-21swapper/2109:19:4814
215869913228,77cyclictest0-21swapper/1309:31:485
21574991324,76cyclictest0-21swapper/1008:26:432
215699913233,77cyclictest0-21swapper/912:30:5731
215699913233,77cyclictest0-21swapper/912:30:5731
215699913232,75cyclictest0-21swapper/910:20:3231
215699913231,71cyclictest0-21swapper/911:32:3031
215699913231,70cyclictest0-21swapper/908:22:5831
215699913230,72cyclictest0-21swapper/910:25:2231
215699913230,70cyclictest0-21swapper/911:49:1631
215699913230,70cyclictest0-21swapper/909:39:2331
215699913226,64cyclictest0-21swapper/908:17:4431
21668991310,79cyclictest0-21swapper/3109:26:5525
216399913129,65cyclictest0-21swapper/2412:27:4817
216399913128,70cyclictest0-21swapper/2411:43:0817
216399913128,69cyclictest0-21swapper/2412:35:1917
216399913128,67cyclictest0-21swapper/2410:00:2417
216399913126,62cyclictest0-21swapper/2409:00:2517
216229913121,83cyclictest0-21swapper/2011:12:5613
215699913154,67cyclictest0-21swapper/908:45:2431
215699913145,57cyclictest0-21swapper/907:20:2831
215699913145,57cyclictest0-21swapper/907:20:2731
215699913133,74cyclictest0-21swapper/911:50:5331
215699913132,80cyclictest0-21swapper/908:55:1331
215699913131,74cyclictest0-21swapper/912:10:3931
215699913131,71cyclictest0-21swapper/909:21:1331
215699913129,68cyclictest0-21swapper/908:30:2731
216399913029,74cyclictest0-21swapper/2408:30:1317
216399913029,72cyclictest0-21swapper/2410:15:4717
216399913028,71cyclictest0-21swapper/2409:40:1317
216399913028,68cyclictest0-21swapper/2409:57:3817
216399913028,68cyclictest0-21swapper/2409:14:2317
216399913028,67cyclictest0-21swapper/2412:07:1217
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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