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2026-04-24 - 02:23
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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 Apr 23, 2026 12:49:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912680,260ptp4l0-21swapper/107:09:111
202159924346,1cyclictest151rcu_preempt12:05:508
202159924346,1cyclictest151rcu_preempt12:05:508
167322242234,6sleep120-21swapper/1207:05:174
20210992046,1cyclictest151rcu_preempt09:26:077
20207991840,54cyclictest0-21swapper/1409:46:256
202209918029,148cyclictest0-21swapper/1709:46:289
202209917929,149cyclictest0-21swapper/1710:40:589
202209917729,95cyclictest0-21swapper/1711:18:429
202209917729,95cyclictest0-21swapper/1711:18:429
202209917030,119cyclictest0-21swapper/1709:05:199
202209916922,108cyclictest0-21swapper/1709:34:299
20220991650,26cyclictest0-21swapper/1711:05:249
20220991650,26cyclictest0-21swapper/1711:05:239
202599916011,94cyclictest0-21swapper/2510:55:1818
202599916011,94cyclictest0-21swapper/2510:55:1818
201449915154,60cyclictest151rcu_preempt09:36:080
202209914929,79cyclictest0-21swapper/1712:23:049
202209914724,80cyclictest0-21swapper/1712:35:219
187912145138,6sleep290-21swapper/2907:06:3722
202079914426,46cyclictest0-21swapper/1408:42:166
20168991420,80cyclictest0-21swapper/408:30:1126
20220991410,85cyclictest0-21swapper/1708:25:469
202079914122,117cyclictest0-21swapper/1410:00:196
202079914122,117cyclictest0-21swapper/1410:00:196
20168991410,88cyclictest0-21swapper/410:23:4126
20183991392,121cyclictest0-21swapper/810:30:4930
20183991392,121cyclictest0-21swapper/810:30:4830
202079913852,58cyclictest0-21swapper/1410:52:426
202079913852,58cyclictest0-21swapper/1410:52:416
201449913823,111cyclictest151rcu_preempt12:11:040
202079913750,60cyclictest0-21swapper/1411:27:586
202079913750,60cyclictest0-21swapper/1411:27:586
202959913627,65cyclictest0-21swapper/3112:15:1825
201919913621,75cyclictest0-21swapper/1008:50:132
20183991360,91cyclictest0-21swapper/811:46:5530
20183991360,91cyclictest0-21swapper/811:46:5430
202959913529,66cyclictest0-21swapper/3109:46:4225
202079913551,55cyclictest0-21swapper/1411:57:226
202079913551,55cyclictest0-21swapper/1411:57:216
202959913431,64cyclictest0-21swapper/3110:34:1725
202959913431,64cyclictest0-21swapper/3110:34:1625
202079913456,61cyclictest0-21swapper/1409:56:036
202209913347,54cyclictest0-21swapper/1709:21:219
202209913328,65cyclictest0-21swapper/1712:18:169
202079913349,57cyclictest0-21swapper/1412:26:146
202079913327,89cyclictest0-21swapper/1409:18:376
20191991331,82cyclictest0-21swapper/1010:37:082
20191991331,82cyclictest0-21swapper/1010:37:072
201919913316,106cyclictest0-21swapper/1007:55:172
202959913227,66cyclictest0-21swapper/3108:55:2325
202599913211,92cyclictest0-21swapper/2510:47:0018
202599913211,92cyclictest0-21swapper/2510:47:0018
202079913148,56cyclictest0-21swapper/1409:04:276
202959913029,63cyclictest0-21swapper/3111:40:0125
202959913029,63cyclictest0-21swapper/3111:40:0125
202959913027,60cyclictest0-21swapper/3112:27:5125
202449913043,64cyclictest0-21swapper/2110:57:0614
202449913043,64cyclictest0-21swapper/2110:57:0614
202209913050,54cyclictest0-21swapper/1708:50:219
202209913041,59cyclictest0-21swapper/1710:24:249
202079913047,54cyclictest0-21swapper/1411:15:096
202079913047,54cyclictest0-21swapper/1411:15:096
202079913045,57cyclictest0-21swapper/1409:53:536
202079913043,61cyclictest0-21swapper/1412:12:196
202079913040,69cyclictest0-21swapper/1408:02:426
202079913030,59cyclictest0-21swapper/1409:25:346
201549913024,62cyclictest0-21swapper/210:25:1412
20154991300,80cyclictest0-21swapper/211:08:4712
20154991300,80cyclictest0-21swapper/211:08:4612
20154991300,78cyclictest0-21swapper/212:30:1812
202209912942,57cyclictest0-21swapper/1708:58:549
202209912929,48cyclictest0-21swapper/1711:10:239
202209912929,48cyclictest0-21swapper/1711:10:229
202079912954,59cyclictest0-21swapper/1410:28:066
202079912929,71cyclictest0-21swapper/1408:22:316
202079912928,69cyclictest0-21swapper/1409:22:546
202079912928,67cyclictest0-21swapper/1408:49:466
202079912925,61cyclictest0-21swapper/1409:35:436
201689912918,70cyclictest0-21swapper/410:06:2126
20154991290,78cyclictest0-21swapper/209:58:2912
202209912840,60cyclictest0-21swapper/1712:04:549
202079912847,62cyclictest0-21swapper/1412:21:266
202079912829,73cyclictest0-21swapper/1410:48:256
202079912829,73cyclictest0-21swapper/1410:48:246
202079912828,65cyclictest0-21swapper/1411:44:006
202079912828,65cyclictest0-21swapper/1411:44:006
202079912826,87cyclictest0-21swapper/1411:33:196
202079912826,87cyclictest0-21swapper/1411:33:186
202079912826,68cyclictest0-21swapper/1410:22:146
201689912851,57cyclictest0-21swapper/411:30:2226
201689912851,57cyclictest0-21swapper/411:30:2226
20154991280,74cyclictest0-21swapper/209:40:5212
202209912735,62cyclictest0-21swapper/1709:28:349
202079912728,62cyclictest0-21swapper/1410:07:166
202009912742,71cyclictest0-21swapper/1210:24:444
201549912722,69cyclictest0-21swapper/209:12:0012
202959912630,61cyclictest0-21swapper/3109:18:0725
202959912627,58cyclictest0-21swapper/3109:55:1525
202959912625,61cyclictest0-21swapper/3112:20:0625
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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