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2026-03-21 - 18:32

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot3s.osadl.org (updated Sat Mar 21, 2026 12:45:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
54427099942,7cyclictest131rcu_preempt08:30:010
54427099942,7cyclictest131rcu_preempt08:30:010
54428299864,70cyclictest629940-21ssh12:15:023
54427099824,10cyclictest131rcu_preempt09:35:020
544270997340,16cyclictest623447-21ssh12:00:010
54427099726,15cyclictest615005-21cat11:40:030
544282997121,7cyclictest584748-21ssh10:30:023
544270997117,33cyclictest12-21ksoftirqd/009:45:010
544270997025,42cyclictest12-21ksoftirqd/011:28:540
54427099693,46cyclictest625532-21ssh12:05:000
54427099693,46cyclictest625532-21ssh12:04:590
544282996733,11cyclictest37-21ksoftirqd/312:32:583
54427099674,46cyclictest284-21systemd-logind09:25:010
544270996619,15cyclictest131rcu_preempt12:09:070
544279996516,31cyclictest564955-21kworker/u8:409:45:022
54427999631,41cyclictest3476162-21ntpd11:55:022
54427999631,41cyclictest3476162-21ntpd11:55:022
544270996321,22cyclictest12-21ksoftirqd/012:40:020
544270996314,4cyclictest12-21ksoftirqd/011:35:020
544279996133,9cyclictest571906-21kworker/2:310:41:262
544270996141,17cyclictest16850irq/134-800000010:45:010
544279996036,11cyclictest3467602-21systemd-journal11:40:002
544270996048,8cyclictest16850irq/134-800000010:55:450
544270996041,16cyclictest12-21ksoftirqd/010:05:010
544270996020,20cyclictest16850irq/134-800000010:25:010
544270995926,16cyclictest592409-21ssh10:47:470
544270995918,8cyclictest12-21ksoftirqd/009:10:020
544270995910,29cyclictest12-21ksoftirqd/010:00:020
544270995829,13cyclictest637910-21ssh12:33:390
544270995828,14cyclictest562195-21ssh09:37:200
544270995827,15cyclictest631749-21ssh12:19:200
544270995820,6cyclictest16850irq/134-800000011:13:090
54427099581,52cyclictest620713-21ssh11:53:470
54427099581,52cyclictest620713-21ssh11:53:460
544279995717,23cyclictest0-21swapper/211:48:262
544270995734,5cyclictest12-21ksoftirqd/009:19:590
544270995729,13cyclictest575541-21ssh10:08:220
544270995724,17cyclictest616952-21ssh11:45:010
544270995724,17cyclictest616952-21ssh11:45:000
544270995719,18cyclictest16850irq/134-800000012:10:340
544270995718,6cyclictest16850irq/134-800000010:35:240
544270995718,19cyclictest16850irq/134-800000011:17:020
544270995718,19cyclictest16850irq/134-800000009:48:570
544270995717,18cyclictest16850irq/134-800000009:11:230
54427099566,14cyclictest549911-21modprobe09:00:010
544270995618,18cyclictest16850irq/134-800000012:22:310
544270995618,18cyclictest16850irq/134-800000011:46:570
544270995618,18cyclictest16850irq/134-800000011:01:330
544270995618,18cyclictest16850irq/134-800000009:53:390
544270995617,19cyclictest16850irq/134-800000010:17:110
544270995616,6cyclictest16850irq/134-800000010:31:330
54427599551,41cyclictest547838-21kworker/u8:408:30:021
54427599551,41cyclictest547838-21kworker/u8:408:30:021
544270995526,14cyclictest577202-21ssh10:12:050
544270995519,16cyclictest16850irq/134-800000010:27:350
544279995437,12cyclictest1-21systemd07:40:002
54427599546,5cyclictest131rcu_preempt12:00:001
544270995419,17cyclictest16850irq/134-800000010:54:070
544270995417,6cyclictest16850irq/134-800000011:20:090
544279995343,6cyclictest571906-21kworker/2:310:34:062
544279995339,5cyclictest547901-21kworker/2:210:00:032
544270995316,6cyclictest16850irq/134-800000012:28:220
544279995243,5cyclictest571906-21kworker/2:311:45:032
544279995241,6cyclictest616993-21kworker/2:012:20:012
54427099523,44cyclictest559091-21ls09:30:020
544279995143,5cyclictest571906-21kworker/2:310:46:562
544279995143,5cyclictest547901-21kworker/2:210:05:212
544279995142,6cyclictest571906-21kworker/2:312:05:362
544270995115,18cyclictest16850irq/134-800000011:09:450
544279995042,5cyclictest571906-21kworker/2:311:56:192
544279995042,5cyclictest531934-21kworker/2:007:22:472
544279995041,6cyclictest616993-21kworker/2:012:34:102
544279995041,6cyclictest586862-21kworker/2:111:30:462
544279995041,6cyclictest586862-21kworker/2:111:05:312
544279995040,6cyclictest586862-21kworker/2:110:58:582
544275995022,10cyclictest23-21ksoftirqd/110:05:001
544270995043,4cyclictest16950irq/224-800000007:10:020
544279994941,5cyclictest586862-21kworker/2:111:10:052
544279994941,5cyclictest547901-21kworker/2:209:29:142
544279994936,8cyclictest3467602-21systemd-journal12:15:002
54427999491,44cyclictest3467602-21systemd-journal11:15:032
544275994919,6cyclictest23-21ksoftirqd/110:14:431
54427099494,3cyclictest131rcu_preempt08:35:020
544270994922,21cyclictest275-21dbus-daemon08:15:010
544270994922,21cyclictest275-21dbus-daemon08:15:010
544282994833,11cyclictest1-21systemd10:50:013
54427999487,5cyclictest131rcu_preempt09:38:182
54427999484,8cyclictest30-21ksoftirqd/207:29:452
544279994841,4cyclictest571906-21kworker/2:310:19:482
544279994840,5cyclictest582675-21kworker/2:010:29:242
544279994840,5cyclictest571906-21kworker/2:311:26:012
544279994840,5cyclictest547901-21kworker/2:210:13:392
544279994840,5cyclictest547901-21kworker/2:209:47:222
544279994840,5cyclictest547901-21kworker/2:209:13:022
54427599482,3cyclictest131rcu_preempt09:11:381
544275994814,5cyclictest131rcu_preempt10:54:591
544270994810,21cyclictest544725-21modprobe07:20:000
544279994738,6cyclictest571906-21kworker/2:311:01:512
544279994738,5cyclictest547901-21kworker/2:209:19:392
544270994739,5cyclictest16950irq/224-800000008:00:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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