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2026-05-28 - 20:46

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 Thu May 28, 2026 12:45:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
963323991021,84cyclictest0-21swapper/011:20:020
96332899703,6cyclictest131rcu_preempt09:30:161
96332399679,34cyclictest131rcu_preempt09:30:340
963334996634,9cyclictest37-21ksoftirqd/309:50:473
963334996633,10cyclictest37-21ksoftirqd/312:36:393
963332996617,10cyclictest30-21ksoftirqd/211:30:402
96332399663,8cyclictest121ksoftirqd/012:37:110
963323996629,33cyclictest12-21ksoftirqd/009:17:160
963323996514,23cyclictest12-21ksoftirqd/011:07:090
963334996427,11cyclictest37-21ksoftirqd/311:26:593
96333299648,18cyclictest1002439-21ssh10:23:052
96333299648,18cyclictest1002439-21ssh10:23:042
963323996415,44cyclictest16850irq/134-800000010:10:390
963323996415,44cyclictest16850irq/134-800000010:10:390
963332996321,8cyclictest30-21ksoftirqd/210:30:252
963332996321,8cyclictest30-21ksoftirqd/210:30:252
963332996316,11cyclictest30-21ksoftirqd/212:25:292
963332996316,10cyclictest30-21ksoftirqd/210:42:482
963323996312,10cyclictest12-21ksoftirqd/011:03:370
963323996310,27cyclictest12-21ksoftirqd/010:44:100
963334996222,11cyclictest37-21ksoftirqd/311:25:003
963332996219,8cyclictest30-21ksoftirqd/209:36:272
963332996218,11cyclictest30-21ksoftirqd/211:52:332
963332996217,8cyclictest30-21ksoftirqd/212:07:512
963332996217,8cyclictest30-21ksoftirqd/210:17:272
963332996217,8cyclictest30-21ksoftirqd/210:07:172
963332996215,10cyclictest30-21ksoftirqd/211:23:282
963332996215,10cyclictest30-21ksoftirqd/211:08:362
963332996212,14cyclictest973366-21ssh09:18:342
96332399629,34cyclictest131rcu_preempt12:27:420
96332399627,36cyclictest12-21ksoftirqd/009:10:130
96333499617,10cyclictest37-21ksoftirqd/312:30:003
96332399619,11cyclictest12-21ksoftirqd/011:32:080
963323996113,23cyclictest12-21ksoftirqd/009:37:540
96333299608,15cyclictest993996-21ssh10:04:232
96333299606,21cyclictest1060159-21ssh12:31:322
963332996018,8cyclictest30-21ksoftirqd/212:24:222
963332996018,10cyclictest30-21ksoftirqd/211:30:022
963332996015,8cyclictest30-21ksoftirqd/207:45:022
963332996015,8cyclictest30-21ksoftirqd/207:45:022
963332996015,10cyclictest30-21ksoftirqd/211:57:252
963332996015,10cyclictest30-21ksoftirqd/208:20:012
963332996015,10cyclictest30-21ksoftirqd/207:20:002
963323996013,14cyclictest131rcu_preempt11:26:570
96333299597,15cyclictest970749-21ssh09:12:522
963332995917,10cyclictest30-21ksoftirqd/212:16:082
963332995916,10cyclictest30-21ksoftirqd/209:42:552
963332995915,10cyclictest30-21ksoftirqd/211:36:212
963332995914,10cyclictest30-21ksoftirqd/210:37:022
96332399597,11cyclictest12-21ksoftirqd/012:19:180
96332399592,4cyclictest131rcu_preempt12:07:360
963323995917,37cyclictest16850irq/134-800000009:30:000
963323995917,37cyclictest16850irq/134-800000009:30:000
96333499583,13cyclictest37-21ksoftirqd/312:20:233
963334995812,14cyclictest37-21ksoftirqd/312:10:023
963332995839,15cyclictest1-21systemd10:15:012
963332995839,15cyclictest1-21systemd10:15:012
963332995817,7cyclictest30-21ksoftirqd/208:10:012
963332995815,8cyclictest30-21ksoftirqd/211:00:012
963332995815,8cyclictest30-21ksoftirqd/210:25:392
963332995812,15cyclictest1052100-21ssh12:13:582
963332995810,10cyclictest30-21ksoftirqd/211:18:272
963323995851,4cyclictest150-21pr/ttyS210:55:020
963323995819,10cyclictest12-21ksoftirqd/011:40:390
963332995715,10cyclictest30-21ksoftirqd/209:30:172
963332995712,9cyclictest30-21ksoftirqd/209:23:272
963332995712,10cyclictest30-21ksoftirqd/210:50:432
96332899576,6cyclictest131rcu_preempt11:26:221
963328995717,6cyclictest131rcu_preempt12:35:001
96332399573,26cyclictest12-21ksoftirqd/011:38:440
963323995719,33cyclictest16850irq/134-800000011:55:010
963334995635,17cyclictest275-21dbus-daemon10:45:013
963334995616,8cyclictest37-21ksoftirqd/309:48:313
963334995611,11cyclictest37-21ksoftirqd/312:18:503
96333299566,18cyclictest966139-21systemd-run08:05:012
96333299564,14cyclictest1020119-21ssh11:02:272
963332995618,9cyclictest30-21ksoftirqd/210:46:392
963332995617,8cyclictest30-21ksoftirqd/212:03:012
96332399568,5cyclictest131rcu_preempt11:56:170
96332399565,33cyclictest12-21ksoftirqd/009:23:310
963323995644,8cyclictest12-21ksoftirqd/010:40:000
96333499557,9cyclictest37-21ksoftirqd/310:38:593
963334995519,10cyclictest37-21ksoftirqd/308:35:023
963334995512,11cyclictest37-21ksoftirqd/312:05:013
963332995511,8cyclictest30-21ksoftirqd/211:11:222
963328995516,5cyclictest131rcu_preempt07:40:001
963328995511,5cyclictest131rcu_preempt09:20:001
96332399552,8cyclictest121ksoftirqd/011:23:160
96333499544,10cyclictest37-21ksoftirqd/310:06:353
963334995413,9cyclictest37-21ksoftirqd/311:09:403
96333499541,17cyclictest1043837-21ssh11:55:153
963334995410,8cyclictest37-21ksoftirqd/309:12:563
963332995414,10cyclictest30-21ksoftirqd/209:28:072
963332995414,10cyclictest30-21ksoftirqd/209:28:072
963332995413,9cyclictest30-21ksoftirqd/211:45:062
963328995435,13cyclictest3467602-21systemd-journal08:00:001
96332399546,7cyclictest12-21ksoftirqd/010:00:010
963323995417,33cyclictest16850irq/134-800000010:23:160
963323995417,33cyclictest16850irq/134-800000010:23:160
96332399541,3cyclictest131rcu_preempt11:47:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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