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2026-06-16 - 04:26

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 Jun 16, 2026 00:45:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2593885999789,4cyclictest30-21ksoftirqd/222:45:022
2593876998675,3cyclictest0-21swapper/023:50:020
2593885998511,8cyclictest131rcu_preempt23:45:022
2593890998433,47cyclictest2624708-21cron22:05:003
2593890998433,47cyclictest2624708-21cron22:05:003
2593876998226,32cyclictest12-21ksoftirqd/000:22:140
2593881997353,2cyclictest0-21swapper/120:15:011
2593890997129,12cyclictest275-21dbus-daemon20:25:013
2593885997025,12cyclictest3467602-21systemd-journal00:32:152
2593885996933,14cyclictest1-21systemd21:10:002
2593876996625,11cyclictest12-21ksoftirqd/020:05:000
2593890996437,24cyclictest0-21swapper/319:10:023
2593876996435,5cyclictest131rcu_preempt00:05:360
2593876996432,7cyclictest12-21ksoftirqd/000:27:220
2593881996342,15cyclictest3467602-21systemd-journal00:28:131
259387699634,7cyclictest121ksoftirqd/023:18:350
259388199624,10cyclictest23-21ksoftirqd/122:05:011
259388199624,10cyclictest23-21ksoftirqd/122:05:011
2593876996241,17cyclictest16850irq/134-800000022:05:000
2593876996241,17cyclictest16850irq/134-800000022:05:000
259387699623,8cyclictest12-21ksoftirqd/021:19:430
2593890996124,14cyclictest275-21dbus-daemon00:00:033
2593890996124,14cyclictest275-21dbus-daemon00:00:023
2593885996131,9cyclictest30-21ksoftirqd/220:30:002
259387699618,5cyclictest131rcu_preempt00:11:120
259387699617,7cyclictest121ksoftirqd/023:08:090
259387699617,7cyclictest121ksoftirqd/023:08:090
259387699617,10cyclictest12-21ksoftirqd/019:55:000
259388599606,50cyclictest2624976-21kworker/u8:222:25:022
259387699607,5cyclictest131rcu_preempt21:36:120
259387699607,5cyclictest131rcu_preempt21:36:120
2593876996051,5cyclictest12-21ksoftirqd/021:50:010
2593876996051,5cyclictest12-21ksoftirqd/021:50:010
2593885995932,8cyclictest2656112-21kworker/2:023:50:382
2593885995848,5cyclictest2595659-21kworker/2:200:30:002
259388199586,5cyclictest131rcu_preempt00:00:011
259388199586,5cyclictest131rcu_preempt00:00:011
2593881995838,15cyclictest1-21systemd19:30:011
259387699588,5cyclictest151rcuc/020:00:010
259387699584,19cyclictest2609180-21wc21:30:020
259387699584,19cyclictest2609180-21wc21:30:020
2593876995818,11cyclictest12-21ksoftirqd/023:15:020
2593876995814,14cyclictest12-21ksoftirqd/021:45:010
2593890995726,11cyclictest37-21ksoftirqd/321:38:373
2593890995726,11cyclictest37-21ksoftirqd/321:38:373
259388199574,10cyclictest23-21ksoftirqd/123:00:011
259388199574,10cyclictest23-21ksoftirqd/123:00:011
259387699578,11cyclictest12-21ksoftirqd/021:51:150
259387699578,11cyclictest12-21ksoftirqd/021:51:150
2593876995728,8cyclictest12-21ksoftirqd/000:37:190
2593876995728,26cyclictest2651589-21ssh23:04:590
2593876995717,10cyclictest12-21ksoftirqd/021:35:000
2593881995615,9cyclictest131rcu_preempt23:45:271
259387699569,8cyclictest12-21ksoftirqd/021:00:010
2593876995639,13cyclictest1-21systemd21:15:010
2593876995627,14cyclictest2634571-21ssh22:26:460
2593876995611,16cyclictest131rcu_preempt23:21:560
2593890995516,7cyclictest131rcu_preempt20:40:003
2593885995532,7cyclictest2599289-21kworker/2:321:36:312
2593885995532,7cyclictest2599289-21kworker/2:321:36:312
2593881995524,12cyclictest23-21ksoftirqd/122:50:011
259387699554,13cyclictest12-21ksoftirqd/000:05:010
2593876995534,17cyclictest16850irq/134-800000023:31:030
2593876995528,7cyclictest12-21ksoftirqd/020:20:010
2593876995519,19cyclictest16850irq/134-800000023:40:470
2593876995514,10cyclictest12-21ksoftirqd/022:55:020
2593890995437,13cyclictest1-21systemd19:50:013
259388599546,8cyclictest30-21ksoftirqd/223:00:022
259388599546,8cyclictest30-21ksoftirqd/223:00:022
2593885995417,17cyclictest0-21swapper/222:51:492
259387699548,5cyclictest16850irq/134-800000022:50:010
259387699547,7cyclictest12-21ksoftirqd/022:41:310
259387699546,8cyclictest12-21ksoftirqd/022:40:010
2593876995446,4cyclictest16950irq/224-800000019:40:000
2593876995426,13cyclictest2606086-21ssh21:23:230
2593876995419,6cyclictest16850irq/134-800000023:52:440
2593876995419,6cyclictest16850irq/134-800000022:59:500
2593876995419,6cyclictest16850irq/134-800000022:59:500
259388199536,5cyclictest131rcu_preempt22:55:021
2593881995320,10cyclictest23-21ksoftirqd/120:35:011
2593881995315,6cyclictest131rcu_preempt23:15:011
259387699536,8cyclictest12-21ksoftirqd/022:12:150
259387699532,46cyclictest3467602-21systemd-journal20:25:010
2593876995317,7cyclictest16850irq/134-800000022:18:160
2593885995244,5cyclictest2656112-21kworker/2:000:35:062
2593885995243,5cyclictest2595659-21kworker/2:222:50:002
2593885995234,12cyclictest275-21dbus-daemon20:40:002
259388199526,5cyclictest131rcu_preempt23:25:441
259388199526,5cyclictest131rcu_preempt23:25:441
259388199524,7cyclictest23-21ksoftirqd/119:15:021
2593881995229,16cyclictest2595355-21cron19:40:001
259387699528,13cyclictest12-21ksoftirqd/022:33:100
259387699525,8cyclictest12-21ksoftirqd/023:27:070
259387699525,8cyclictest12-21ksoftirqd/023:27:070
259387699525,12cyclictest12-21ksoftirqd/019:25:000
2593876995228,9cyclictest2621182-21ssh21:56:530
2593876995224,12cyclictest2675043-21ssh23:56:470
2593876995224,12cyclictest2675043-21ssh23:56:470
2593876995218,17cyclictest16850irq/134-800000023:35:310
2593885995143,5cyclictest2595659-21kworker/2:200:09:422
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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