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2026-07-13 - 23:00

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 Mon Jul 13, 2026 12:45:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3132710991176,8cyclictest131rcu_preempt08:10:023
313270399795,67cyclictest3236997-21ssh12:35:031
313270399737,6cyclictest131rcu_preempt10:20:001
3132700997210,5cyclictest131rcu_preempt12:12:390
3132700997210,5cyclictest131rcu_preempt12:12:390
313270099698,6cyclictest131rcu_preempt11:10:110
3132700996826,10cyclictest3176333-21ssh10:28:140
313270099676,7cyclictest121ksoftirqd/011:50:020
313270099668,10cyclictest12-21ksoftirqd/011:55:020
3132700996537,7cyclictest3181891-21modprobe10:40:000
3132700996421,13cyclictest12-21ksoftirqd/009:20:010
3132700996353,8cyclictest0-21swapper/008:35:020
313270099611,10cyclictest12-21ksoftirqd/011:07:020
3132700996056,2cyclictest0-21swapper/007:50:020
3132700996034,8cyclictest0-21swapper/012:17:480
313270099603,11cyclictest12-21ksoftirqd/011:38:420
313270099594,13cyclictest12-21ksoftirqd/011:00:000
3132700995928,15cyclictest3199626-21ssh11:16:570
3132700995919,34cyclictest0-21swapper/009:48:430
3132700995914,23cyclictest12-21ksoftirqd/009:45:030
313270099585,46cyclictest0-21swapper/009:10:000
313270099585,46cyclictest0-21swapper/009:10:000
3132700995828,14cyclictest3169070-21ssh10:12:570
3132706995749,5cyclictest3136299-21kworker/2:012:04:202
3132706995749,5cyclictest3136299-21kworker/2:012:04:202
313270099574,9cyclictest12-21ksoftirqd/009:55:010
3132700995729,9cyclictest12-21ksoftirqd/009:11:150
3132700995713,26cyclictest3153312-21ssh09:40:020
3132700995710,24cyclictest131rcu_preempt10:05:030
313270699562,10cyclictest3467602-21systemd-journal08:49:592
313270099565,6cyclictest131rcu_preempt08:05:020
3132700995635,16cyclictest3467602-21systemd-journal10:55:010
3132700995634,17cyclictest16850irq/134-800000011:30:000
3132700995627,25cyclictest12-21ksoftirqd/009:27:230
3132700995625,15cyclictest3143919-21ssh09:20:100
3132700995546,6cyclictest12-21ksoftirqd/010:20:010
3132700995523,16cyclictest3192022-21ssh11:00:450
313270099551,7cyclictest121ksoftirqd/012:06:280
313270099549,28cyclictest131rcu_preempt10:20:120
3132700995435,13cyclictest1-21systemd11:25:010
3132700995427,12cyclictest3235097-21ssh12:31:000
3132700995427,12cyclictest3235097-21ssh12:31:000
3132700995426,13cyclictest3212006-21ssh11:42:480
313270099542,5cyclictest131rcu_preempt09:41:040
3132700995422,27cyclictest3184312-21cron10:45:000
3132700995420,5cyclictest16850irq/134-800000012:02:550
3132700995420,5cyclictest16850irq/134-800000012:02:540
313270699537,8cyclictest3136792-21cut08:30:002
3132706995312,11cyclictest131rcu_preempt11:46:532
3132700995329,20cyclictest3207646-21ssh11:33:440
3132700995324,24cyclictest3150557-21sh09:34:240
313270099531,10cyclictest12-21ksoftirqd/010:48:170
3132706995243,5cyclictest3137856-21kworker/2:309:23:122
3132706995226,23cyclictest30-21ksoftirqd/212:40:022
3132706995212,5cyclictest131rcu_preempt10:10:372
3132706995211,23cyclictest3189274-21ssh10:55:032
313270399523,7cyclictest131rcu_preempt08:05:001
3132703995235,13cyclictest1-21systemd10:40:001
313270099528,9cyclictest12-21ksoftirqd/012:40:020
313270099525,9cyclictest12-21ksoftirqd/008:10:000
313270099525,35cyclictest12-21ksoftirqd/008:56:200
313270099525,10cyclictest12-21ksoftirqd/012:00:010
3132700995217,7cyclictest12-21ksoftirqd/007:29:210
3132706995143,5cyclictest3136299-21kworker/2:010:43:192
3132706995142,5cyclictest3181958-21kworker/2:211:42:102
3132706995142,5cyclictest3119964-21kworker/2:107:20:012
3132706995112,9cyclictest131rcu_preempt12:31:182
3132706995112,9cyclictest131rcu_preempt12:31:182
3132700995132,14cyclictest3467602-21systemd-journal08:30:010
3132700995124,12cyclictest3231926-21ssh12:24:420
3132700995122,14cyclictest3233590-21ssh12:28:010
313270099511,5cyclictest0-21swapper/008:55:020
3132706995042,6cyclictest30-21ksoftirqd/207:40:022
3132706995042,5cyclictest3137856-21kworker/2:310:39:442
3132706995042,5cyclictest3137856-21kworker/2:309:38:132
3132706995042,5cyclictest3136299-21kworker/2:009:57:012
3132706995042,5cyclictest3136299-21kworker/2:009:57:012
3132706995034,12cyclictest3467602-21systemd-journal09:30:012
3132706995033,12cyclictest275-21dbus-daemon10:35:012
313270699502,12cyclictest3216173-21ssh11:51:272
3132703995012,22cyclictest3191591-21ssh11:00:011
3132703995010,6cyclictest131rcu_preempt12:00:001
313270099504,8cyclictest3134181-21modprobe07:40:000
313270099504,11cyclictest12-21ksoftirqd/010:00:010
313270099504,11cyclictest12-21ksoftirqd/010:00:010
313270099503,16cyclictest12-21ksoftirqd/008:20:000
3132700995030,16cyclictest3135220-21cat08:00:000
3132700995019,28cyclictest151rcuc/010:30:030
313271099497,39cyclictest3476162-21ntpd10:35:023
3132710994924,20cyclictest37-21ksoftirqd/312:00:003
3132706994941,5cyclictest3181958-21kworker/2:211:21:452
3132706994941,5cyclictest3181958-21kworker/2:211:17:422
3132706994941,5cyclictest3137856-21kworker/2:310:16:532
3132706994941,5cyclictest3137856-21kworker/2:309:18:492
3132706994941,5cyclictest3137856-21kworker/2:309:11:422
3132706994941,5cyclictest3136299-21kworker/2:011:58:502
3132706994941,5cyclictest3136299-21kworker/2:011:35:472
3132706994941,5cyclictest3136299-21kworker/2:010:48:382
3132706994941,5cyclictest3112785-21kworker/2:007:10:012
3132706994933,12cyclictest1-21systemd12:30:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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