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2026-07-08 - 20:00
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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 Wed Jul 08, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
183321349,95sleep01265-21/usr/sbin/munin06:53:070
1824211211,72sleep21830-21/usr/sbin/munin06:53:052
248821026,16sleep10-21swapper/106:55:581
275399912,65cyclictest32668-21sh10:28:171
2746999155,30cyclictest32346-21switchtime09:33:030
2746999155,30cyclictest32346-21switchtime09:33:030
274699912,71cyclictest32427-21apt-get10:28:080
2753999065,7cyclictest181rcu_preempt09:46:241
2753999065,7cyclictest181rcu_preempt09:46:241
2753999043,22cyclictest4895-21sensors_temp07:02:401
2746999020,25cyclictest0-21swapper/011:23:500
2753998847,18cyclictest31-21ksoftirqd/109:06:541
2753998847,18cyclictest31-21ksoftirqd/109:06:541
2746998867,14cyclictest1263-21ssh12:17:510
2746998867,14cyclictest1263-21ssh12:17:510
2755998671,9cyclictest6669-21modprobe08:47:272
2755998671,9cyclictest6669-21modprobe08:47:272
2753998619,40cyclictest31-21ksoftirqd/109:49:531
2746998617,27cyclictest0-21swapper/010:05:230
129692850,9sleep20-21swapper/207:27:302
2753998448,8cyclictest181rcu_preempt11:45:351
2753998448,8cyclictest181rcu_preempt11:45:351
2746998412,31cyclictest5516-21taskset07:03:000
275399838,43cyclictest21155-21apt-get11:02:451
275399838,43cyclictest21155-21apt-get11:02:451
2753998358,19cyclictest28592-21cpuspeed09:27:441
2753998316,38cyclictest31-21ksoftirqd/111:02:061
2755998263,12cyclictest23427-21sh10:12:492
2755998263,12cyclictest23427-21sh10:12:492
2753998255,17cyclictest9911-21diskmemload09:17:301
274699822,66cyclictest19571-21sh09:12:570
2755998163,11cyclictest2059-21ssh11:24:182
2753998115,40cyclictest31-21ksoftirqd/110:14:381
2753998115,40cyclictest31-21ksoftirqd/110:14:381
2746998162,13cyclictest22775-21apt-key07:57:310
2746998156,18cyclictest29472-21apt-key08:17:310
2746998142,14cyclictest15-21ksoftirqd/011:47:490
2755998065,11cyclictest2738-21cyclictest07:07:272
2755998063,11cyclictest6156-21latency_hist11:32:292
2755998063,11cyclictest6156-21latency_hist11:32:292
2755998059,14cyclictest8589-21sh11:36:012
2755998017,25cyclictest5941-21/usr/sbin/munin10:37:502
2755998017,25cyclictest5941-21/usr/sbin/munin10:37:502
2753998052,8cyclictest181rcu_preempt08:18:011
2753998016,40cyclictest31-21ksoftirqd/106:59:541
2746998048,23cyclictest7954-21modprobe07:12:270
2755997954,19cyclictest24610-21kworker/u19:1+nfsiod09:46:562
2755997954,19cyclictest24610-21kworker/u19:1+nfsiod09:46:562
2755997925,22cyclictest16203-21runrttasks09:07:352
2755997922,25cyclictest1471-21unixbench_multi10:29:272
2755997922,22cyclictest0-21swapper/211:39:072
2755997918,26cyclictest0-21swapper/208:42:282
2753997962,11cyclictest9911-21diskmemload12:01:191
2753997958,7cyclictest181rcu_preempt12:24:111
2753997957,16cyclictest655-21sh11:22:421
2753997939,20cyclictest2738-21cyclictest12:18:101
2753997939,20cyclictest2738-21cyclictest12:18:101
2753997910,34cyclictest31-21ksoftirqd/108:23:221
274699799,28cyclictest26087-21rm12:05:140
2746997964,9cyclictest24323-21ssh11:07:480
2746997957,14cyclictest26222-21sh10:17:420
2746997918,29cyclictest16107-21latency_hist09:07:300
2746997918,29cyclictest16107-21latency_hist09:07:300
2746997911,29cyclictest9662-21rm09:49:330
2746997910,28cyclictest17213-21ssh10:56:200
11952796,15sleep30-21swapper/306:52:333
7632780,9sleep30-21swapper/312:17:363
7632780,9sleep30-21swapper/312:17:363
2755997847,24cyclictest0-21swapper/209:02:512
2755997847,24cyclictest0-21swapper/209:02:512
2755997831,35cyclictest28504-21apt-get09:27:382
2755997820,28cyclictest32123-21runrttasks11:20:572
2755997816,24cyclictest0-21swapper/209:56:332
2753997859,7cyclictest181rcu_preempt11:54:471
2753997857,8cyclictest181rcu_preempt09:25:421
2753997857,8cyclictest181rcu_preempt09:25:421
2753997847,7cyclictest181rcu_preempt11:11:011
2753997839,11cyclictest12952-21sh09:54:461
2753997834,12cyclictest0-21swapper/110:43:161
2755997728,20cyclictest17317-21sh11:50:302
2755997725,24cyclictest9911-21diskmemload09:26:322
2755997725,24cyclictest9911-21diskmemload09:26:322
2755997725,23cyclictest1269-21kworker/u19:2+rpciod09:48:422
2753997753,11cyclictest181rcu_preempt07:27:081
2753997742,8cyclictest181rcu_preempt07:48:011
2753997737,8cyclictest181rcu_preempt10:22:351
2753997737,8cyclictest181rcu_preempt10:22:351
2753997732,10cyclictest0-21swapper/109:33:011
2753997732,10cyclictest0-21swapper/109:33:011
274699779,28cyclictest22307-21sh10:10:480
2746997711,26cyclictest19397-21rm10:59:040
2746997711,24cyclictest11345-21ssh09:52:540
2755997657,14cyclictest32534-21kworker/u17:3+events_unbound08:37:272
2755997656,14cyclictest14455-21latency_hist07:32:292
2755997656,14cyclictest14455-21latency_hist07:32:292
2755997640,23cyclictest2943-21apt-get06:57:432
2755997626,19cyclictest9911-21diskmemload12:24:502
2755997613,29cyclictest0-21swapper/210:42:462
2753997647,7cyclictest181rcu_preempt08:43:011
2753997647,7cyclictest181rcu_preempt08:43:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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