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2026-05-03 - 00:06

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 May 02, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
792903997920,44cyclictest12-21ksoftirqd/011:25:220
792903997920,44cyclictest12-21ksoftirqd/011:25:220
79290399745,26cyclictest131rcu_preempt10:15:540
79290399726,7cyclictest121ksoftirqd/011:21:300
79291799718,9cyclictest37-21ksoftirqd/310:30:013
792903997117,49cyclictest12-21ksoftirqd/012:37:030
79290399703,50cyclictest825185-21ssh10:10:030
792903997015,49cyclictest131rcu_preempt08:00:000
792903996913,49cyclictest131rcu_preempt10:45:020
792903996820,44cyclictest12-21ksoftirqd/009:40:110
792903996518,42cyclictest12-21ksoftirqd/010:39:040
792903996513,5cyclictest131rcu_preempt12:20:000
792903996424,36cyclictest12-21ksoftirqd/009:33:340
792903996316,32cyclictest12-21ksoftirqd/010:15:020
792903996316,32cyclictest12-21ksoftirqd/010:15:020
792903996211,5cyclictest131rcu_preempt08:20:000
79291799617,12cyclictest37-21ksoftirqd/311:32:043
792917996137,15cyclictest3467602-21systemd-journal07:40:003
792917996137,15cyclictest3467602-21systemd-journal07:40:003
792917996116,6cyclictest825022-21kworker/u8:210:15:023
792917996116,6cyclictest825022-21kworker/u8:210:15:023
792903996110,45cyclictest0-21swapper/010:25:020
79291799607,9cyclictest37-21ksoftirqd/312:40:013
792917996042,13cyclictest1-21systemd08:00:003
79290399608,6cyclictest131rcu_preempt12:05:020
792903996019,7cyclictest131rcu_preempt12:30:010
792903996019,10cyclictest131rcu_preempt07:40:000
792903996019,10cyclictest131rcu_preempt07:40:000
79291799598,11cyclictest37-21ksoftirqd/307:35:013
79291799594,13cyclictest37-21ksoftirqd/309:50:183
792917995912,12cyclictest37-21ksoftirqd/309:25:263
792903995928,14cyclictest799389-21ssh09:10:250
792903995920,34cyclictest16850irq/134-800000012:15:010
792903995919,5cyclictest131rcu_preempt11:07:520
792903995919,5cyclictest131rcu_preempt11:07:510
792903995918,6cyclictest131rcu_preempt12:21:540
792903995918,34cyclictest275-21dbus-daemon10:05:010
792903995911,34cyclictest131rcu_preempt10:50:010
792903995911,34cyclictest131rcu_preempt10:50:000
792917995818,10cyclictest37-21ksoftirqd/311:18:043
792903995816,37cyclictest12-21ksoftirqd/011:39:530
792903995814,40cyclictest12-21ksoftirqd/010:58:430
792903995814,40cyclictest12-21ksoftirqd/010:58:430
792903995810,42cyclictest131rcu_preempt09:26:440
792917995711,8cyclictest37-21ksoftirqd/310:43:263
792917995711,11cyclictest37-21ksoftirqd/308:15:013
792917995710,7cyclictest37-21ksoftirqd/311:05:013
792907995711,6cyclictest131rcu_preempt09:15:001
79290399579,43cyclictest131rcu_preempt09:50:020
79290399579,43cyclictest131rcu_preempt09:50:020
792903995712,40cyclictest12-21ksoftirqd/011:00:440
792917995647,7cyclictest37-21ksoftirqd/307:50:013
792903995626,14cyclictest853815-21ssh11:16:290
792903995610,12cyclictest131rcu_preempt09:22:460
79291799556,10cyclictest37-21ksoftirqd/312:00:013
79291799553,14cyclictest37-21ksoftirqd/311:15:013
792917995511,8cyclictest37-21ksoftirqd/309:25:023
792910995545,6cyclictest797567-21kworker/2:109:19:272
79290399558,5cyclictest131rcu_preempt11:15:000
79290399556,10cyclictest12-21ksoftirqd/011:52:160
792903995520,31cyclictest16850irq/134-800000009:55:290
792903995520,31cyclictest16850irq/134-800000009:55:290
792903995517,34cyclictest12-21ksoftirqd/012:33:540
792903995516,10cyclictest131rcu_preempt12:05:020
792903995512,9cyclictest12-21ksoftirqd/011:32:090
79291799549,8cyclictest37-21ksoftirqd/308:20:003
79291799549,14cyclictest37-21ksoftirqd/312:25:473
79291799548,12cyclictest37-21ksoftirqd/312:12:513
79291799545,10cyclictest37-21ksoftirqd/310:40:003
792917995434,14cyclictest1-21systemd11:45:013
792917995411,9cyclictest37-21ksoftirqd/308:25:023
792917995411,9cyclictest37-21ksoftirqd/308:25:023
792917995410,6cyclictest37-21ksoftirqd/312:25:013
79291099542,26cyclictest833844-21ssh10:30:022
792907995427,11cyclictest23-21ksoftirqd/111:20:011
79290399547,8cyclictest12-21ksoftirqd/012:00:030
79290399547,6cyclictest131rcu_preempt10:31:070
79290399544,6cyclictest131rcu_preempt11:50:000
792903995418,32cyclictest16850irq/134-800000011:41:130
792903995415,10cyclictest12-21ksoftirqd/008:45:020
79291799539,8cyclictest37-21ksoftirqd/307:30:013
79291799537,10cyclictest37-21ksoftirqd/310:49:553
79291799537,10cyclictest37-21ksoftirqd/310:49:553
79291799536,6cyclictest37-21ksoftirqd/310:56:173
79291799536,6cyclictest37-21ksoftirqd/310:56:163
79291799532,14cyclictest862409-21ssh11:36:083
792917995315,11cyclictest37-21ksoftirqd/310:22:553
792910995344,5cyclictest832072-21kworker/2:211:45:092
792910995343,6cyclictest797567-21kworker/2:109:04:542
79290799539,6cyclictest131rcu_preempt10:30:431
79290799532,37cyclictest864043-21ssh11:40:031
79290399539,9cyclictest12-21ksoftirqd/010:51:510
79290399539,7cyclictest12-21ksoftirqd/008:30:010
792903995319,30cyclictest16850irq/134-800000009:35:510
792903995319,30cyclictest16850irq/134-800000009:35:510
792903995318,6cyclictest16850irq/134-800000010:28:300
792903995312,6cyclictest131rcu_preempt07:55:010
792903995310,5cyclictest131rcu_preempt09:19:190
79291799529,10cyclictest37-21ksoftirqd/311:55:023
79291799527,10cyclictest37-21ksoftirqd/309:00:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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