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2026-05-29 - 18:43
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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 Fri May 29, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9768999571,16cyclictest1-21systemd09:10:100
9768999468,17cyclictest12543-21latency_hist07:10:140
9768999364,18cyclictest9137-21kworker/u19:0-rpciod10:56:400
9768999215,43cyclictest15-21ksoftirqd/007:01:290
9768999067,15cyclictest21873-21latency_hist07:50:140
9776998824,25cyclictest19630-21seq11:57:282
9776998824,25cyclictest19630-21seq11:57:282
9768998860,9cyclictest181rcu_preempt12:20:490
9768998860,9cyclictest181rcu_preempt12:20:490
976899877,51cyclictest15-21ksoftirqd/008:21:590
9776998625,23cyclictest7883-21seq08:56:462
9776998616,30cyclictest12925-21fschecks_time07:10:342
976899862,38cyclictest15-21ksoftirqd/009:56:090
9776998565,14cyclictest29529-21latency_hist08:20:132
9776998533,42cyclictest0-21swapper/209:45:262
976899854,63cyclictest87-21kswapd007:40:230
976899854,63cyclictest87-21kswapd007:40:230
9776998429,27cyclictest2024-21seq12:21:202
9776998429,27cyclictest2024-21seq12:21:202
9776998426,21cyclictest16817-21seq11:52:582
9776998417,28cyclictest27685-21grep12:11:102
9776998417,27cyclictest0-21swapper/209:59:012
9768998461,17cyclictest9243-21idleruntime-cro10:50:100
966128413,42sleep0277-21dbus-daemon07:00:130
9776998321,26cyclictest352-21runrttasks09:07:282
9776998320,30cyclictest4676-21apt-get08:51:272
9776998318,26cyclictest1925-21runrttasks10:36:272
9774998366,12cyclictest30643-21latency_hist11:25:131
9774998366,12cyclictest30643-21latency_hist11:25:131
9774998362,9cyclictest0-21swapper/107:20:271
9774998362,9cyclictest0-21swapper/107:20:271
9776998224,23cyclictest31315-21seq08:26:042
9776998223,23cyclictest26848-21seq08:06:402
9776998221,23cyclictest0-21swapper/209:02:292
9774998220,23cyclictest0-21swapper/110:25:331
9776998124,23cyclictest25409-21seq08:03:532
9776998122,25cyclictest0-21swapper/211:04:202
9776998122,25cyclictest0-21swapper/211:04:202
976899817,61cyclictest5182-21/usr/sbin/munin08:51:300
9768998159,15cyclictest25686-21latency_hist08:05:140
9768998141,12cyclictest15-21ksoftirqd/008:26:040
976899813,51cyclictest23163-21awk09:25:100
9776998062,9cyclictest0-21swapper/212:06:292
9776998062,9cyclictest0-21swapper/212:06:292
9776998050,20cyclictest27271-21fschecks_count10:25:322
9776998026,29cyclictest23367-21seq10:19:122
9776998024,23cyclictest24695-21seq07:57:492
976899805,36cyclictest15-21ksoftirqd/007:55:510
9768998042,11cyclictest15-21ksoftirqd/008:06:400
9768998028,12cyclictest181rcu_preempt08:20:100
976899802,40cyclictest15-21ksoftirqd/007:20:040
9776997925,19cyclictest24022-21seq11:13:492
9776997924,25cyclictest25754-21seq10:22:282
9776997924,25cyclictest25754-21seq10:22:282
9776997924,25cyclictest1874-21seq11:28:132
9776997923,25cyclictest28106-21seq09:32:132
9776997917,25cyclictest11912-21runrttasks10:54:112
9774997963,9cyclictest0-21swapper/111:11:231
9768997956,16cyclictest13792-21kworker/u19:2+events_unbound10:15:100
9768997956,16cyclictest13792-21kworker/u19:2+events_unbound10:15:100
9768997955,16cyclictest6755-21latency_hist12:30:130
976899795,42cyclictest15-21ksoftirqd/008:13:120
9768997953,17cyclictest23245-21sh12:04:160
976899792,49cyclictest15-21ksoftirqd/007:24:500
976899792,49cyclictest15-21ksoftirqd/007:24:500
9776997836,32cyclictest0-21swapper/211:05:202
9776997822,26cyclictest4311-21seq11:31:332
9776997822,20cyclictest11939-21ssh10:00:152
9776997817,26cyclictest15529-21ssh11:00:102
9774997860,9cyclictest0-21swapper/110:10:451
9774997860,9cyclictest0-21swapper/110:10:451
9774997860,8cyclictest0-21swapper/111:00:431
9774997860,8cyclictest0-21swapper/111:00:431
9774997856,10cyclictest0-21swapper/110:30:361
9774997856,10cyclictest0-21swapper/110:30:361
976899782,44cyclictest15-21ksoftirqd/008:31:260
9783997710,55cyclictest5743-21chrt08:51:353
9776997762,9cyclictest16793-21run-parts10:07:362
9776997759,9cyclictest0-21swapper/210:10:472
9776997759,9cyclictest0-21swapper/210:10:472
9776997724,21cyclictest21566-21seq07:49:232
9776997724,20cyclictest8601-21seq09:55:002
9776997722,19cyclictest16856-21seq09:14:172
9776997722,19cyclictest14285-21seq11:49:212
9776997719,21cyclictest0-21swapper/211:38:432
9774997761,7cyclictest0-21swapper/111:05:301
9774997759,9cyclictest0-21swapper/111:25:421
9768997745,11cyclictest181rcu_preempt11:27:340
9768997735,18cyclictest9755-21cyclictest11:47:460
976899773,42cyclictest15-21ksoftirqd/007:39:320
9776997631,34cyclictest0-21swapper/211:15:252
9776997622,24cyclictest23179-21seq07:54:012
9776997621,24cyclictest14603-21seq07:20:082
9774997657,12cyclictest17639-21systemd-run11:55:101
9774997656,10cyclictest0-21swapper/112:05:131
9768997659,10cyclictest409-21cron12:20:100
9768997659,10cyclictest409-21cron12:20:100
976899763,27cyclictest15-21ksoftirqd/008:44:390
9776997560,9cyclictest28589-21grep11:20:452
9776997560,9cyclictest28589-21grep11:20:452
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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