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2026-04-28 - 09:20

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 Tue Apr 28, 2026 00:45:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36062869914926,6cyclictest16850irq/134-800000023:55:000
3606298999367,22cyclictest37-21ksoftirqd/322:30:033
3606286998115,45cyclictest12-21ksoftirqd/023:38:520
3606286997873,3cyclictest0-21swapper/000:00:040
3606286997733,40cyclictest3694475-21cron00:20:000
3606286996810,5cyclictest131rcu_preempt22:58:430
3606298996726,13cyclictest275-21dbus-daemon23:25:003
360628699666,39cyclictest12-21ksoftirqd/021:30:210
3606298996525,7cyclictest3642770-21latency_hist22:20:013
3606286996517,39cyclictest12-21ksoftirqd/023:32:580
3606295996444,7cyclictest3609906-21kworker/2:021:49:552
3606298996338,4cyclictest37-21ksoftirqd/322:25:023
3606295996341,7cyclictest3636232-21kworker/2:100:12:422
3606286996330,4cyclictest12-21ksoftirqd/000:07:110
3606286996328,7cyclictest131rcu_preempt22:05:000
360628699632,3cyclictest0-21swapper/023:40:030
3606286996316,4cyclictest12-21ksoftirqd/022:51:010
3606286996219,18cyclictest12-21ksoftirqd/023:16:250
3606286996216,42cyclictest12-21ksoftirqd/023:49:190
3606298996127,8cyclictest37-21ksoftirqd/322:01:033
3606295996141,14cyclictest3467602-21systemd-journal23:20:002
360628699618,31cyclictest131rcu_preempt22:13:330
3606286996114,43cyclictest12-21ksoftirqd/023:07:560
360628699611,42cyclictest3672875-21unin-run23:30:010
3606286996032,12cyclictest3626320-21ssh21:41:540
3606286996025,6cyclictest131rcu_preempt20:25:010
3606286996024,10cyclictest12-21ksoftirqd/021:20:180
3606295995927,5cyclictest3636232-21kworker/2:123:15:012
360628699596,7cyclictest131rcu_preempt22:50:010
3606286995918,33cyclictest16850irq/134-800000021:55:420
3606286995918,33cyclictest16850irq/134-800000021:55:410
3606286995916,33cyclictest16850irq/134-800000021:26:320
3606286995914,41cyclictest12-21ksoftirqd/022:36:360
3606298995828,4cyclictest3607269-21latency_hist19:29:593
3606298995727,4cyclictest3673091-21sh23:30:103
360629599575,6cyclictest131rcu_preempt00:10:022
3606295995746,6cyclictest3599052-21kworker/2:320:30:022
3606295995736,8cyclictest3599052-21kworker/2:321:25:442
3606286995738,15cyclictest3610939-21grep20:40:010
3606286995718,35cyclictest16850irq/134-800000022:30:100
3606286995718,34cyclictest16850irq/134-800000023:55:210
3606286995718,34cyclictest16850irq/134-800000023:55:210
3606286995718,34cyclictest16850irq/134-800000023:13:170
3606286995718,34cyclictest16850irq/134-800000023:01:420
3606286995718,34cyclictest16850irq/134-800000023:01:410
3606286995718,30cyclictest16850irq/134-800000023:21:470
3606286995717,32cyclictest16850irq/134-800000000:37:540
360629899567,24cyclictest0-21swapper/300:20:013
3606295995646,6cyclictest3599052-21kworker/2:322:28:172
3606286995619,33cyclictest16850irq/134-800000021:48:470
3606286995619,33cyclictest16850irq/134-800000021:14:330
3606286995619,33cyclictest16850irq/134-800000000:30:080
3606286995618,34cyclictest16850irq/134-800000022:40:410
3606286995618,34cyclictest16850irq/134-800000022:40:400
3606286995617,35cyclictest16850irq/134-800000021:38:090
3606286995617,35cyclictest16850irq/134-800000021:38:090
3606286995615,32cyclictest16850irq/134-800000021:16:190
3606298995523,11cyclictest3659285-21ssh22:58:303
3606295995546,6cyclictest3599052-21kworker/2:323:00:562
3606295995546,6cyclictest3599052-21kworker/2:323:00:552
3606295995546,5cyclictest3636232-21kworker/2:123:59:042
3606295995546,5cyclictest3636232-21kworker/2:123:59:032
3606295995546,5cyclictest3636232-21kworker/2:100:00:212
3606295995531,8cyclictest3636232-21kworker/2:100:21:162
3606286995517,6cyclictest16850irq/134-800000022:24:110
3606286995517,34cyclictest16850irq/134-800000022:16:120
3606286995516,31cyclictest16850irq/134-800000000:26:020
3606286995516,30cyclictest16850irq/134-800000000:24:300
3606286995515,32cyclictest16850irq/134-800000022:08:150
3606286995515,31cyclictest16850irq/134-800000022:26:310
3606286995515,31cyclictest16850irq/134-800000021:50:270
3606295995446,5cyclictest3636232-21kworker/2:123:47:462
3606295995446,5cyclictest3636232-21kworker/2:100:16:172
3606295995444,6cyclictest3636232-21kworker/2:123:31:302
3606286995417,33cyclictest16850irq/134-800000000:12:280
3606295995347,3cyclictest3599052-21kworker/2:322:22:432
3606295995345,5cyclictest3636232-21kworker/2:122:56:212
3606295995344,6cyclictest3636232-21kworker/2:123:37:042
3606295995344,5cyclictest3599052-21kworker/2:321:11:562
3606295995244,5cyclictest3636232-21kworker/2:123:23:342
3606295995244,5cyclictest3636232-21kworker/2:122:54:072
3606295995244,5cyclictest3609906-21kworker/2:021:51:242
3606295995244,5cyclictest3599052-21kworker/2:322:43:382
3606295995244,5cyclictest3599052-21kworker/2:322:43:372
3606295995244,5cyclictest3599052-21kworker/2:322:38:472
3606295995244,5cyclictest3599052-21kworker/2:322:12:552
3606295995244,5cyclictest3599052-21kworker/2:321:22:362
3606295995244,5cyclictest3599052-21kworker/2:319:41:442
3606295995242,7cyclictest3685774-21kworker/2:000:33:212
3606295995144,4cyclictest3599052-21kworker/2:321:18:262
3606295995143,5cyclictest3636232-21kworker/2:123:29:472
3606295995143,5cyclictest3599052-21kworker/2:322:48:382
3606295995143,5cyclictest3599052-21kworker/2:320:25:012
3606295995143,5cyclictest3599052-21kworker/2:320:05:012
3606295995142,6cyclictest3636232-21kworker/2:100:25:182
3606295995119,21cyclictest131rcu_preempt23:45:002
3606291995134,13cyclictest3467602-21systemd-journal22:49:591
3606295995042,5cyclictest3636232-21kworker/2:123:07:302
3606295995042,5cyclictest3609906-21kworker/2:022:02:502
3606295995042,5cyclictest3609906-21kworker/2:021:40:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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