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2026-04-19 - 19:34
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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 Sun Apr 19, 2026 12:49:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94929924547,2cyclictest151rcu_preempt10:35:5020
93809922115,198cyclictest151rcu_preempt09:52:0923
93809922115,198cyclictest151rcu_preempt09:52:0923
93659920938,127cyclictest0-21swapper/009:46:300
93659920938,127cyclictest0-21swapper/009:46:300
9482991849,125cyclictest0-21swapper/2411:10:2017
94879918113,148cyclictest0-21swapper/2511:53:0418
94879918013,155cyclictest0-21swapper/2509:20:2718
94879918013,155cyclictest0-21swapper/2509:20:2718
3273911790,170ptp4l0-21swapper/107:09:571
94879917813,164cyclictest0-21swapper/2512:35:2118
94879917813,148cyclictest0-21swapper/2508:55:1618
94879917813,148cyclictest0-21swapper/2508:55:1618
94879917613,155cyclictest0-21swapper/2511:55:5918
94879917413,121cyclictest0-21swapper/2509:15:0618
94879917413,121cyclictest0-21swapper/2509:15:0618
9365991700,37cyclictest0-21swapper/012:17:160
948799163161,1cyclictest167-21ksoftirqd/2510:34:1218
9370991616,98cyclictest151rcu_preempt08:30:051
93659915920,135cyclictest151rcu_preempt09:30:340
93659915920,135cyclictest151rcu_preempt09:30:340
94879915813,119cyclictest30248-21taskset12:07:2818
94259915851,69cyclictest151rcu_preempt07:59:524
94259915648,66cyclictest151rcu_preempt11:37:554
93659915530,85cyclictest0-21swapper/008:05:160
93659915512,138cyclictest0-21swapper/009:52:030
93659915512,138cyclictest0-21swapper/009:52:030
93659915430,88cyclictest0-21swapper/009:10:130
93659915430,88cyclictest0-21swapper/009:10:130
93659915330,74cyclictest0-21swapper/011:06:120
946399150148,1cyclictest131-21ksoftirqd/1909:27:1711
946399150148,1cyclictest131-21ksoftirqd/1909:27:1711
94879914751,67cyclictest151rcu_preempt11:06:4818
93659914633,109cyclictest151rcu_preempt11:41:110
93659914632,57cyclictest0-21swapper/007:55:230
9422991452,110cyclictest0-21swapper/1110:23:083
9482991447,104cyclictest0-21swapper/2410:06:5917
9482991427,134cyclictest0-21swapper/2409:10:0117
9482991427,134cyclictest0-21swapper/2409:10:0117
94639914250,82cyclictest0-21swapper/1910:32:4411
9482991417,98cyclictest0-21swapper/2412:20:2217
9482991417,100cyclictest0-21swapper/2408:55:1517
9482991417,100cyclictest0-21swapper/2408:55:1517
9482991416,109cyclictest0-21swapper/2410:55:2217
94259914117,103cyclictest151rcu_preempt12:00:064
9482991397,93cyclictest0-21swapper/2409:33:0317
9482991397,93cyclictest0-21swapper/2409:33:0317
9391991370,82cyclictest0-21swapper/512:15:5727
9370991370,83cyclictest0-21swapper/111:23:301
9370991370,83cyclictest0-21swapper/109:36:051
9370991370,83cyclictest0-21swapper/109:36:051
93659913721,79cyclictest0-21swapper/010:55:150
9441991360,80cyclictest0-21swapper/1509:45:257
9441991360,80cyclictest0-21swapper/1509:45:247
94309913621,73cyclictest30612-21cut07:25:105
94879913540,64cyclictest0-21swapper/2510:20:5118
9391991350,83cyclictest0-21swapper/510:28:3127
9422991340,83cyclictest0-21swapper/1112:09:063
93659913326,72cyclictest0-21swapper/010:40:000
9365991330,82cyclictest0-21swapper/008:00:220
94879913248,57cyclictest0-21swapper/2511:28:1318
94879913248,56cyclictest0-21swapper/2511:37:4918
94419913224,72cyclictest0-21swapper/1508:35:237
9425991320,89cyclictest0-21swapper/1212:37:154
9391991320,82cyclictest0-21swapper/509:40:5727
9391991320,82cyclictest0-21swapper/509:40:5727
94879913147,57cyclictest0-21swapper/2508:33:2618
94879913144,57cyclictest0-21swapper/2510:36:2018
94879913139,62cyclictest0-21swapper/2510:18:2618
94639913120,109cyclictest151rcu_preempt09:13:5611
94639913120,109cyclictest151rcu_preempt09:13:5611
93919913116,93cyclictest0-21swapper/512:25:0227
9370991310,79cyclictest0-21swapper/111:03:451
94879913052,59cyclictest0-21swapper/2509:41:4918
94879913052,59cyclictest0-21swapper/2509:41:4918
94879913051,57cyclictest0-21swapper/2510:48:0618
94879913040,60cyclictest0-21swapper/2511:49:0218
94879913034,66cyclictest0-21swapper/2507:25:2218
94879912949,53cyclictest0-21swapper/2510:28:5118
94879912944,59cyclictest0-21swapper/2510:57:4318
94879912943,58cyclictest0-21swapper/2512:15:1318
94879912942,56cyclictest0-21swapper/2510:51:5118
94879912843,52cyclictest0-21swapper/2508:50:3218
94879912843,52cyclictest0-21swapper/2508:50:3118
94879912829,69cyclictest0-21swapper/2509:11:2118
94879912829,69cyclictest0-21swapper/2509:11:2118
94879912828,70cyclictest0-21swapper/2508:40:2218
94879912827,71cyclictest0-21swapper/2508:09:5418
94639912865,61cyclictest0-21swapper/1911:09:2311
94639912822,43cyclictest0-21swapper/1909:21:5511
94639912822,43cyclictest0-21swapper/1909:21:5511
9463991280,86cyclictest0-21swapper/1910:23:5611
9463991280,77cyclictest0-21swapper/1911:48:5411
93659912846,52cyclictest0-21swapper/008:40:180
94879912728,69cyclictest0-21swapper/2509:46:3818
94879912728,69cyclictest0-21swapper/2509:46:3818
94879912728,66cyclictest0-21swapper/2507:55:2118
9482991277,109cyclictest0-21swapper/2410:33:2917
9435991270,76cyclictest0-21swapper/1410:11:336
9435991270,76cyclictest0-21swapper/1410:11:336
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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