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2026-07-18 - 23:28
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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 rackbslot7.osadl.org (updated Sat Jul 18, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3023221126,18sleep10-21swapper/106:55:181
305129910471,16cyclictest30495-21cyclictest11:07:141
305129910471,16cyclictest30495-21cyclictest11:07:141
30421210210,65sleep230442-21latency_hist06:56:502
30506999926,47cyclictest3478-21latency_hist07:11:490
294692987,61sleep029483-21/usr/sbin/munin06:52:200
30516999748,13cyclictest181rcu_preempt08:47:232
30512999674,14cyclictest0-21swapper/112:21:501
260542960,6sleep00-21swapper/009:29:230
30506999422,41cyclictest0-21swapper/011:52:080
30516999240,12cyclictest0-21swapper/210:45:432
30506999260,12cyclictest181rcu_preempt11:02:070
30516999059,9cyclictest181rcu_preempt11:39:192
30516999044,18cyclictest181rcu_preempt12:14:112
30516999044,18cyclictest181rcu_preempt12:14:112
3051699903,56cyclictest31016-21apt-get10:32:042
3051699903,56cyclictest31016-21apt-get10:32:042
30516998936,14cyclictest0-21swapper/211:12:132
30506998910,35cyclictest15-21ksoftirqd/007:31:460
3051699877,62cyclictest20354-21apt-get08:02:052
30516998751,17cyclictest181rcu_preempt09:47:212
30516998743,10cyclictest181rcu_preempt10:47:222
30516998669,8cyclictest181rcu_preempt09:21:332
30516998661,9cyclictest181rcu_preempt09:11:502
30516998643,10cyclictest181rcu_preempt09:07:102
30506998662,13cyclictest0-21swapper/008:16:500
3050699863,37cyclictest15-21ksoftirqd/009:17:300
30522998512,46cyclictest0-21swapper/310:32:133
30522998512,46cyclictest0-21swapper/310:32:133
30516998551,11cyclictest181rcu_preempt08:52:072
3050699854,49cyclictest27049-21apt-get08:22:020
30506998518,38cyclictest15-21ksoftirqd/008:17:030
30522998410,35cyclictest0-21swapper/312:12:003
30522998410,35cyclictest0-21swapper/312:12:003
30516998443,10cyclictest181rcu_preempt07:18:112
30516998428,20cyclictest0-21swapper/210:30:252
30516998428,20cyclictest0-21swapper/210:30:252
30516998353,9cyclictest181rcu_preempt06:57:132
30516998346,10cyclictest181rcu_preempt10:37:332
30516998343,7cyclictest181rcu_preempt10:56:292
30516998340,12cyclictest181rcu_preempt12:01:492
30516998339,8cyclictest181rcu_preempt11:52:022
3051699833,57cyclictest8307-21apt-get07:27:002
30516998334,27cyclictest0-21swapper/211:22:192
30516998328,23cyclictest0-21swapper/211:34:582
30516998328,23cyclictest0-21swapper/211:34:582
3050699833,34cyclictest15-21ksoftirqd/008:06:130
30516998262,14cyclictest24240-21ssh12:07:342
30516998243,11cyclictest181rcu_preempt10:07:242
30516998237,29cyclictest0-21swapper/212:17:442
30516998232,28cyclictest0-21swapper/210:12:102
30516998232,28cyclictest0-21swapper/210:12:102
30516998232,14cyclictest0-21swapper/211:19:402
30516998232,14cyclictest0-21swapper/211:19:402
30516998226,8cyclictest0-21swapper/208:07:092
30512998262,13cyclictest544-21cron07:31:461
30506998217,36cyclictest15-21ksoftirqd/010:47:150
30516998158,8cyclictest181rcu_preempt11:42:202
30516998152,19cyclictest30495-21cyclictest11:51:482
30516998152,19cyclictest30495-21cyclictest11:51:482
30516998137,12cyclictest31609-21sort11:27:032
30516998122,17cyclictest0-21swapper/208:22:502
3050699819,27cyclictest15-21ksoftirqd/009:12:510
3050699818,35cyclictest15-21ksoftirqd/007:41:380
30506998115,38cyclictest15-21ksoftirqd/009:42:010
30506998115,29cyclictest15-21ksoftirqd/008:31:590
30516998057,16cyclictest2897-21latency_hist08:46:492
30516998055,8cyclictest181rcu_preempt07:37:052
30516998052,8cyclictest181rcu_preempt12:01:522
30516998042,14cyclictest181rcu_preempt07:06:502
30516998040,9cyclictest181rcu_preempt07:07:182
30516998039,12cyclictest181rcu_preempt09:36:292
30512998062,11cyclictest10208-21diskmemload09:57:121
30506998042,8cyclictest181rcu_preempt10:22:150
3051699796,59cyclictest32495-21apt-get12:22:502
30516997955,9cyclictest181rcu_preempt10:02:042
30516997950,9cyclictest181rcu_preempt07:52:162
30516997949,10cyclictest181rcu_preempt07:32:102
30516997926,10cyclictest0-21swapper/210:59:002
30516997926,10cyclictest0-21swapper/210:59:002
30516997925,20cyclictest0-21swapper/209:05:452
3050699799,36cyclictest15-21ksoftirqd/007:25:430
30506997962,9cyclictest0-21swapper/011:37:220
3050699793,48cyclictest5359-21apt-get07:17:020
30506997932,17cyclictest8303-21kworker/u17:3+xprtiod09:01:520
30506997923,32cyclictest15-21ksoftirqd/011:36:320
30506997923,32cyclictest15-21ksoftirqd/011:36:320
30506997913,46cyclictest15-21ksoftirqd/010:33:090
30506997913,46cyclictest15-21ksoftirqd/010:33:090
30506997913,30cyclictest15-21ksoftirqd/010:08:390
30516997843,16cyclictest181rcu_preempt09:58:592
30516997842,8cyclictest181rcu_preempt08:37:212
30516997838,11cyclictest25067-21latency_hist08:16:492
30516997831,27cyclictest0-21swapper/209:52:072
30516997830,25cyclictest0-21swapper/210:23:172
30516997830,23cyclictest5910-21diskmemload09:22:212
30516997829,19cyclictest0-21swapper/207:22:212
30516997827,20cyclictest0-21swapper/207:57:142
30516997827,20cyclictest0-21swapper/207:57:142
30516997825,13cyclictest0-21swapper/208:59:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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