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2026-03-28 - 10:17
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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 Sat Mar 28, 2026 00:49:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
53589929799,24cyclictest151rcu_preempt23:32:3915
53589929799,24cyclictest151rcu_preempt23:32:3815
3273912720,264ptp4l0-21swapper/119:07:161
24432252244,6sleep260-21swapper/2619:05:2219
52059920117,114cyclictest0-21swapper/021:12:370
38432190182,6sleep240-21swapper/2419:06:5617
54239917715,113cyclictest0-21swapper/3123:45:1125
54239917715,113cyclictest0-21swapper/3123:45:1125
330891160152,6phc2sys0-21swapper/219:05:2212
53239915242,109cyclictest0-21swapper/1722:55:479
53239915242,109cyclictest0-21swapper/1722:55:479
5349991503,142cyclictest0-21swapper/2121:28:1214
53239914942,54cyclictest0-21swapper/1700:35:449
53359914835,93cyclictest0-21swapper/1923:05:2611
53359914835,93cyclictest0-21swapper/1923:05:2511
53359914635,89cyclictest0-21swapper/1923:46:0111
53359914635,89cyclictest0-21swapper/1923:46:0111
52889914620,92cyclictest0-21swapper/1222:52:184
52889914620,92cyclictest0-21swapper/1222:52:174
5349991453,140cyclictest0-21swapper/2123:03:1414
5349991453,140cyclictest0-21swapper/2123:03:1414
53239914536,79cyclictest0-21swapper/1723:52:589
53239914536,79cyclictest0-21swapper/1723:52:589
53359914431,105cyclictest0-21swapper/1900:27:4511
5349991434,93cyclictest0-21swapper/2122:21:5814
5349991434,85cyclictest0-21swapper/2121:13:1314
5349991433,120cyclictest0-21swapper/2100:01:0314
5349991433,109cyclictest0-21swapper/2100:38:2714
53359914331,78cyclictest0-21swapper/1922:00:1311
5349991424,107cyclictest0-21swapper/2123:11:4314
5349991424,107cyclictest0-21swapper/2123:11:4214
5349991423,101cyclictest0-21swapper/2123:25:0214
53239914234,65cyclictest0-21swapper/1700:07:559
5257991420,84cyclictest0-21swapper/821:05:2130
5349991413,116cyclictest0-21swapper/2100:10:0914
53359914128,96cyclictest0-21swapper/1921:40:2711
52889914144,70cyclictest0-21swapper/1220:41:204
5349991403,135cyclictest0-21swapper/2122:06:3614
53239914033,105cyclictest0-21swapper/1721:05:079
52889914040,61cyclictest0-21swapper/1219:11:034
52579914048,56cyclictest0-21swapper/823:40:2030
52579914048,56cyclictest0-21swapper/823:40:1930
52579914029,66cyclictest0-21swapper/822:00:2330
5257991400,82cyclictest0-21swapper/821:40:1930
5257991400,81cyclictest0-21swapper/800:20:5630
5257991400,80cyclictest0-21swapper/800:05:2630
5349991393,81cyclictest0-21swapper/2100:27:1414
53359913925,89cyclictest0-21swapper/1919:47:0711
52889913951,57cyclictest0-21swapper/1223:46:184
52889913951,57cyclictest0-21swapper/1223:46:174
52889913945,61cyclictest0-21swapper/1221:22:464
52889913938,65cyclictest0-21swapper/1221:47:384
52889913929,70cyclictest0-21swapper/1222:39:424
52579913927,67cyclictest0-21swapper/822:15:2230
53859913841,30cyclictest0-21swapper/2621:10:0719
53359913835,64cyclictest0-21swapper/1900:06:2111
53239913832,51cyclictest0-21swapper/1720:20:169
5257991380,81cyclictest0-21swapper/820:50:2130
53239913728,101cyclictest0-21swapper/1722:37:379
52889913753,58cyclictest0-21swapper/1223:06:594
52889913753,58cyclictest0-21swapper/1223:06:594
52889913745,56cyclictest0-21swapper/1223:13:064
52889913745,56cyclictest0-21swapper/1223:13:064
52889913729,70cyclictest0-21swapper/1223:56:084
52579913753,62cyclictest0-21swapper/822:33:5130
53239913626,70cyclictest0-21swapper/1721:36:419
52889913647,55cyclictest0-21swapper/1221:35:204
52579913630,68cyclictest0-21swapper/822:48:2830
52579913630,68cyclictest0-21swapper/822:48:2830
53859913543,58cyclictest0-21swapper/2600:38:0019
5349991353,94cyclictest0-21swapper/2121:35:0014
52889913528,69cyclictest0-21swapper/1200:25:184
52889913527,69cyclictest0-21swapper/1222:25:194
52889913527,69cyclictest0-21swapper/1222:25:194
52579913561,65cyclictest0-21swapper/820:35:0830
52579913530,68cyclictest0-21swapper/823:10:2630
52579913530,68cyclictest0-21swapper/823:10:2630
5257991350,77cyclictest0-21swapper/800:25:1330
53859913455,62cyclictest0-21swapper/2621:49:0819
53859913428,70cyclictest0-21swapper/2622:53:4819
53859913428,70cyclictest0-21swapper/2622:53:4719
53859913428,69cyclictest0-21swapper/2600:15:2019
53859913428,66cyclictest0-21swapper/2619:30:1119
53359913421,112cyclictest0-21swapper/1900:03:4211
52889913428,71cyclictest0-21swapper/1223:15:184
52889913428,71cyclictest0-21swapper/1223:15:184
52889913428,63cyclictest0-21swapper/1219:45:154
52889913427,65cyclictest0-21swapper/1219:55:074
52889913426,62cyclictest0-21swapper/1221:40:044
52579913447,60cyclictest0-21swapper/821:59:3830
52579913434,58cyclictest0-21swapper/800:01:3130
53859913353,64cyclictest0-21swapper/2622:14:1519
53859913348,56cyclictest0-21swapper/2621:41:0619
53859913345,67cyclictest0-21swapper/2622:46:1919
53859913345,67cyclictest0-21swapper/2622:46:1919
53859913340,61cyclictest0-21swapper/2621:32:3319
53359913335,64cyclictest0-21swapper/1922:12:2911
52889913344,59cyclictest0-21swapper/1222:30:044
52889913343,60cyclictest0-21swapper/1220:00:134
52889913337,61cyclictest0-21swapper/1223:29:094
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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