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2026-03-11 - 14:34
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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 rackbslot7.osadl.org (updated Wed Mar 11, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2771822890,104sleep2200-21systemd-journal19:05:302
2771822890,104sleep2200-21systemd-journal19:05:302
27963991194,77cyclictest14734-21apt-get20:00:440
27963991194,77cyclictest14734-21apt-get20:00:440
27963991194,77cyclictest14734-21apt-get20:00:440
27963991178,92cyclictest3747-21apt-get21:05:500
2747921146,16sleep00-21swapper/019:02:310
2747921146,16sleep00-21swapper/019:02:310
26736211311,70sleep126754-21kernelversion19:01:011
26736211311,70sleep126754-21kernelversion19:01:011
27963991042,81cyclictest3743-21diskmemload23:20:470
27963999976,8cyclictest181rcu_preempt22:20:320
27997999753,35cyclictest32560-21modprobe00:35:292
27997999753,35cyclictest32560-21modprobe00:35:292
2796399953,64cyclictest1-21systemd23:55:300
27997999355,8cyclictest181rcu_preempt21:55:492
2799799925,70cyclictest19548-21apt-get20:15:442
2799799925,70cyclictest19548-21apt-get20:15:442
27997999138,17cyclictest181rcu_preempt00:00:252
27997999047,8cyclictest181rcu_preempt22:05:332
27997999047,8cyclictest181rcu_preempt22:05:332
27997998854,9cyclictest181rcu_preempt21:30:212
27997998846,11cyclictest27944-21cyclictest21:14:032
2796399883,62cyclictest26239-21apt-get20:35:450
2799799875,44cyclictest39-21ksoftirqd/221:54:242
27997998749,9cyclictest181rcu_preempt23:26:002
2796399872,66cyclictest16001-21kworker/u17:0+ext4-rsv-conversion19:31:020
2796399872,66cyclictest16001-21kworker/u17:0+ext4-rsv-conversion19:31:020
27997998666,13cyclictest29824-21latency_hist23:35:492
27997998650,12cyclictest181rcu_preempt19:35:522
27997998635,13cyclictest181rcu_preempt00:03:532
27997998612,61cyclictest20740-21apt-get23:20:452
27975998671,10cyclictest27944-21cyclictest22:48:081
2796399869,33cyclictest15-21ksoftirqd/021:50:490
27963998648,11cyclictest181rcu_preempt22:29:120
27997998538,15cyclictest181rcu_preempt19:25:502
27975998512,34cyclictest352-21runrttasks23:33:331
27963998552,12cyclictest0-21swapper/022:40:500
27963998551,12cyclictest181rcu_preempt20:54:030
27963998535,11cyclictest181rcu_preempt22:08:260
27997998437,15cyclictest181rcu_preempt23:43:542
27963998448,7cyclictest181rcu_preempt00:15:050
2796399843,46cyclictest20072-21apt-get20:15:440
2796399843,46cyclictest20072-21apt-get20:15:440
27997998360,8cyclictest181rcu_preempt21:16:562
27997998356,19cyclictest31154-21kworker/u18:0+events_unbound20:55:292
27997998355,9cyclictest181rcu_preempt21:30:542
27997998347,8cyclictest181rcu_preempt23:03:402
27997998345,9cyclictest181rcu_preempt22:09:152
27997998341,21cyclictest27944-21cyclictest22:30:502
2799799833,55cyclictest14236-21apt-get20:00:442
2799799833,55cyclictest14236-21apt-get20:00:442
2799799833,55cyclictest14236-21apt-get20:00:442
2799799832,48cyclictest39-21ksoftirqd/222:24:422
2799799832,48cyclictest39-21ksoftirqd/222:24:422
27975998364,13cyclictest277-21dbus-daemon20:10:311
27963998345,19cyclictest181rcu_preempt00:23:350
27963998344,13cyclictest181rcu_preempt23:36:140
27963998344,13cyclictest181rcu_preempt23:36:140
27997998250,11cyclictest181rcu_preempt21:23:432
27997998250,11cyclictest181rcu_preempt21:23:432
27997998246,8cyclictest181rcu_preempt21:50:322
27997998238,22cyclictest21240-21ssh00:15:502
27997998238,22cyclictest21240-21ssh00:15:502
27997998230,11cyclictest181rcu_preempt00:11:092
27975998222,12cyclictest0-21swapper/119:05:441
27963998221,16cyclictest0-21swapper/021:25:330
27963998221,16cyclictest0-21swapper/021:25:330
27975998120,31cyclictest0-21swapper/123:15:291
27963998148,13cyclictest181rcu_preempt20:06:300
27963998135,9cyclictest181rcu_preempt19:28:080
27963998126,8cyclictest181rcu_preempt00:27:490
27963998126,41cyclictest0-21swapper/023:46:040
27963998126,41cyclictest0-21swapper/023:46:040
27997998046,15cyclictest181rcu_preempt23:40:232
27997998046,15cyclictest181rcu_preempt23:40:232
2799799804,45cyclictest26360-21ssh22:36:042
27997998039,12cyclictest181rcu_preempt21:36:422
27975998064,10cyclictest8790-21idleruntime-cro23:55:291
27975998014,26cyclictest22911-21seq20:24:141
27963998059,13cyclictest3743-21diskmemload22:51:210
27963998053,14cyclictest0-21swapper/022:25:330
27963998053,14cyclictest0-21swapper/022:25:330
27963998051,9cyclictest181rcu_preempt22:59:200
27963998050,9cyclictest181rcu_preempt21:30:450
27963998042,18cyclictest181rcu_preempt22:03:450
27963998042,18cyclictest181rcu_preempt22:03:450
27963998039,18cyclictest181rcu_preempt21:14:590
27963998039,11cyclictest181rcu_preempt21:15:500
27997997957,8cyclictest181rcu_preempt22:12:392
27997997947,10cyclictest181rcu_preempt20:30:312
27997997939,18cyclictest181rcu_preempt23:48:102
27997997939,18cyclictest181rcu_preempt23:48:102
27997997935,12cyclictest181rcu_preempt00:08:372
2799799792,39cyclictest39-21ksoftirqd/220:31:412
27975997954,18cyclictest19546-21modprobe20:15:291
27975997954,18cyclictest19546-21modprobe20:15:291
27975997943,29cyclictest13029-21kworker/u18:1+nfsiod22:25:121
27975997943,29cyclictest13029-21kworker/u18:1+nfsiod22:25:121
27963997958,15cyclictest544-21cron19:55:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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