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2026-08-07 - 05:45

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 Fri Aug 07, 2026 00:45:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2568260991472,15cyclictest131rcu_preempt20:20:010
2568260998611,46cyclictest16850irq/134-800000023:35:240
2568268997136,29cyclictest3467602-21systemd-journal00:00:002
2568268997134,31cyclictest1-21systemd22:25:022
2568268997134,31cyclictest1-21systemd22:25:012
2568260996829,3cyclictest131rcu_preempt21:59:020
2568260996829,3cyclictest131rcu_preempt21:59:010
2568268996625,5cyclictest2612493-21sh22:29:412
2568268996524,5cyclictest2580501-21sh21:22:212
2568268996524,4cyclictest2620673-21sh22:46:452
256826099658,29cyclictest131rcu_preempt22:10:010
256826099658,29cyclictest131rcu_preempt22:10:000
2568268996424,4cyclictest2613012-21sh22:30:192
2568268996424,4cyclictest2613012-21sh22:30:182
2568268996332,27cyclictest3467602-21systemd-journal22:06:332
2568268996332,27cyclictest3467602-21systemd-journal22:06:322
2568268996325,7cyclictest2623151-21sshd22:52:102
2568268996228,30cyclictest2636941-21sh23:20:502
2568268996122,9cyclictest30-21ksoftirqd/223:04:392
2568260996116,23cyclictest2667573-21ssh00:25:270
2568268996026,12cyclictest30-21ksoftirqd/221:30:592
2568268996024,5cyclictest2574153-21latency_hist21:00:022
256826899602,20cyclictest2598243-21rm22:00:012
256826899602,20cyclictest2598243-21rm22:00:002
2568268996021,7cyclictest30-21ksoftirqd/222:37:192
2568268995924,9cyclictest30-21ksoftirqd/221:25:572
2568268995924,5cyclictest30-21ksoftirqd/221:41:162
2568268995924,4cyclictest2572353-21latency_hist20:25:032
2568266995914,6cyclictest131rcu_preempt22:00:021
2568271995820,27cyclictest37-21ksoftirqd/300:20:033
2568268995821,9cyclictest3467602-21systemd-journal00:19:592
2568260995816,33cyclictest16850irq/134-800000023:29:310
2568260995816,33cyclictest16850irq/134-800000023:29:310
2568260995728,14cyclictest2664272-21ssh00:18:440
2568260995728,14cyclictest2651556-21ssh23:51:350
2568260995721,15cyclictest131rcu_preempt23:35:000
2568260995718,34cyclictest16850irq/134-800000021:44:130
2568268995628,6cyclictest2656190-21sh00:01:282
2568268995623,4cyclictest2668720-21sh00:27:572
2568268995619,11cyclictest30-21ksoftirqd/223:41:342
2568268995618,11cyclictest30-21ksoftirqd/222:04:292
2568260995619,32cyclictest16850irq/134-800000000:00:370
2568260995617,31cyclictest16850irq/134-800000023:45:020
2568260995616,20cyclictest16850irq/134-800000022:25:370
2568260995615,32cyclictest16850irq/134-800000000:10:550
256826099561,45cyclictest0-21swapper/023:10:000
2568260995613,32cyclictest12-21ksoftirqd/021:22:100
2568271995521,22cyclictest0-21swapper/322:39:553
2568268995527,6cyclictest2576770-21sh21:14:482
2568268995527,6cyclictest2576770-21sh21:14:482
2568268995519,9cyclictest30-21ksoftirqd/222:56:042
2568268995519,8cyclictest2641123-21wc23:30:022
2568268995519,8cyclictest2641123-21wc23:30:022
2568260995540,12cyclictest1-21systemd00:10:000
2568260995529,11cyclictest2633174-21ssh23:13:120
2568260995528,12cyclictest2599979-21ssh22:03:230
2568260995527,12cyclictest2604406-21ssh22:12:330
2568260995518,29cyclictest16850irq/134-800000022:22:180
2568260995518,29cyclictest16850irq/134-800000022:22:170
2568260995517,34cyclictest16850irq/134-800000022:32:480
2568260995517,34cyclictest16850irq/134-800000022:32:470
2568260995516,20cyclictest16850irq/134-800000022:43:080
2568260995515,20cyclictest16850irq/134-800000023:02:040
2568260995514,33cyclictest16850irq/134-800000021:26:180
2568271995437,12cyclictest1-21systemd19:40:003
2568268995421,8cyclictest30-21ksoftirqd/222:11:332
2568268995421,10cyclictest30-21ksoftirqd/221:47:372
2568268995421,10cyclictest0-21swapper/200:05:422
2568260995446,4cyclictest16950irq/224-800000019:50:000
256826099544,3cyclictest131rcu_preempt21:34:030
2568260995428,11cyclictest2606967-21ssh22:17:550
2568260995428,11cyclictest2593060-21ssh21:48:480
2568260995427,11cyclictest2653246-21ssh23:55:100
2568260995417,33cyclictest16850irq/134-800000022:59:450
2568260995416,34cyclictest16850irq/134-800000021:52:390
2568260995415,20cyclictest16850irq/134-800000023:20:060
2568260995411,39cyclictest16850irq/134-800000000:22:000
2568271995338,11cyclictest275-21dbus-daemon22:55:013
2568268995344,6cyclictest2612692-21kworker/2:300:12:132
2568268995344,5cyclictest2556211-21kworker/2:319:49:592
256826699534,3cyclictest131rcu_preempt19:50:001
2568260995317,32cyclictest16850irq/134-800000022:45:400
2568260995316,33cyclictest16850irq/134-800000023:46:310
2568260995316,33cyclictest16850irq/134-800000021:11:390
2568260995316,33cyclictest16850irq/134-800000021:11:380
2568260995316,33cyclictest16850irq/134-800000000:35:170
2568260995315,34cyclictest16850irq/134-800000022:51:010
2568260995313,32cyclictest16850irq/134-800000022:40:000
256827199525,9cyclictest37-21ksoftirqd/320:30:013
2568271995232,15cyclictest3467602-21systemd-journal22:00:013
2568271995232,15cyclictest3467602-21systemd-journal22:00:003
2568268995243,6cyclictest2641107-21kworker/2:000:31:532
2568266995239,10cyclictest2598241-21cron22:00:011
2568266995239,10cyclictest2598241-21cron22:00:001
2568260995227,10cyclictest2670191-21ssh00:30:540
2568260995216,32cyclictest16850irq/134-800000021:37:410
2568260995215,33cyclictest16850irq/134-800000021:16:200
2568260995211,21cyclictest16850irq/134-800000023:15:340
2568268995122,5cyclictest2572395-21latency_hist20:30:012
2568268995120,9cyclictest30-21ksoftirqd/200:37:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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