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2026-09-04 - 16:31

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #2

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.

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 rack7slot2s.osadl.org (updated Tue Aug 25, 2026 00:49:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
337810599292206,50cyclictest3413000-21kworker/u9:7+rpciod22:25:050
337810599292206,50cyclictest3413000-21kworker/u9:7+rpciod22:25:050
337810599292155,92cyclictest3410669-21ssh22:07:050
337810599292155,92cyclictest3410669-21ssh22:07:050
337810599290194,64cyclictest14-21ksoftirqd/000:10:100
337810599290194,64cyclictest14-21ksoftirqd/000:10:100
337810599289171,59cyclictest3400538-21rm21:20:230
337810599286170,56cyclictest171rcu_preempt21:40:340
337810599286170,56cyclictest171rcu_preempt21:40:340
337810599284183,66cyclictest14-21ksoftirqd/019:50:580
337810599283180,53cyclictest171rcu_preempt19:10:420
337810599283180,53cyclictest171rcu_preempt19:10:420
337810599282181,55cyclictest14-21ksoftirqd/019:40:140
337810599279206,59cyclictest3404052-21kworker/u9:0+xprtiod21:50:390
337810599279206,59cyclictest3404052-21kworker/u9:0+xprtiod21:50:390
337810599279173,56cyclictest3415668-21collect222:31:000
337810599279173,56cyclictest3415668-21collect222:31:000
337810599279172,54cyclictest3401849-21ssh21:26:140
337810599279160,102cyclictest0-21swapper/023:21:110
337810599279150,85cyclictest14-21ksoftirqd/023:45:130
337810599278145,114cyclictest0-21swapper/023:15:350
337810599278145,114cyclictest0-21swapper/023:15:350
337810599277171,56cyclictest3439579-21ntpq00:31:360
337810599276189,50cyclictest14-21ksoftirqd/020:06:430
337810599276189,50cyclictest14-21ksoftirqd/020:06:430
337810599276171,55cyclictest3405556-21kworker/u9:4+xprtiod22:02:050
337810599276168,58cyclictest3433532-21/usr/sbin/munin00:00:310
337810599276161,59cyclictest171rcu_preempt21:10:240
337810599276161,59cyclictest171rcu_preempt21:10:230
337810599275179,54cyclictest14-21ksoftirqd/022:40:130
337810599275179,54cyclictest14-21ksoftirqd/022:40:130
337810599274155,57cyclictest171rcu_preempt00:20:250
337810599274155,57cyclictest171rcu_preempt00:20:250
337810599273163,57cyclictest171rcu_preempt21:15:220
337810599273163,57cyclictest171rcu_preempt21:15:210
337810599272179,51cyclictest14-21ksoftirqd/023:58:160
337810599272179,51cyclictest14-21ksoftirqd/023:58:160
337810599272174,52cyclictest3430303-21ssh23:40:060
337810599272174,52cyclictest3430303-21ssh23:40:060
337810599272166,73cyclictest3411862-21rm22:12:250
337810599272166,73cyclictest3411862-21rm22:12:240
337810599272158,61cyclictest171rcu_preempt22:40:000
337810599272158,61cyclictest171rcu_preempt22:40:000
337810599271170,56cyclictest171rcu_preempt20:25:580
337810599271170,56cyclictest171rcu_preempt20:25:580
337810599271138,86cyclictest3403035-21ssh21:32:000
337810599271138,86cyclictest3403035-21ssh21:31:590
337810599269162,60cyclictest3422370-21sendmail_mailtr23:02:110
337810599269158,68cyclictest3436653-21ssh00:15:480
337810599269158,68cyclictest3436653-21ssh00:15:480
337810599268177,52cyclictest14-21ksoftirqd/020:40:450
337810599268177,52cyclictest14-21ksoftirqd/020:40:450
337810599268168,55cyclictest3427468-21ntpq23:26:250
337810599268163,88cyclictest0-21swapper/023:31:150
337810599268163,88cyclictest0-21swapper/023:31:150
337810599268151,73cyclictest3431229-21munin-run23:45:020
337810599268151,73cyclictest3431229-21munin-run23:45:020
337810599267165,84cyclictest0-21swapper/023:12:030
337810599267165,84cyclictest0-21swapper/023:12:030
337810599266163,58cyclictest171rcu_preempt00:35:110
337810599266136,91cyclictest3438536-21ssh00:26:420
337810599266136,91cyclictest3438536-21ssh00:26:420
337810599264173,51cyclictest14-21ksoftirqd/020:50:070
337810599264147,58cyclictest171rcu_preempt22:55:070
337810599264132,87cyclictest0-21swapper/020:56:560
337810599264130,87cyclictest3412575-21ssh22:16:550
337810599263121,95cyclictest3434813-21ssh00:06:270
337810599263121,95cyclictest3434813-21ssh00:06:260
337810599262185,35cyclictest3386439-21kworker/u9:8+rpciod20:05:040
337810599261170,56cyclictest14-21ksoftirqd/020:50:550
337810599261170,56cyclictest14-21ksoftirqd/020:50:550
337810599261147,57cyclictest171rcu_preempt19:50:070
337810599260132,111cyclictest0-21swapper/021:46:590
337810599260132,111cyclictest0-21swapper/021:46:580
337810599259167,53cyclictest3391676-21apt-get20:30:130
337810599259167,53cyclictest3391676-21apt-get20:30:130
337810599259158,58cyclictest0-21swapper/021:55:360
337810599259158,58cyclictest0-21swapper/021:55:360
337810599259139,105cyclictest0-21swapper/023:06:100
337810599259139,105cyclictest0-21swapper/023:06:100
337810599259135,107cyclictest9150irq/87-eth%d19:25:040
337810599258130,83cyclictest3384771-21sshd19:48:290
337810599257153,57cyclictest3419396-21kworker/u9:5+rpciod22:50:070
337810599257129,111cyclictest0-21swapper/020:37:040
337810599256146,93cyclictest0-21swapper/019:56:580
337810599256146,93cyclictest0-21swapper/019:56:580
337810599256139,99cyclictest0-21swapper/022:57:040
337810599256133,107cyclictest0-21swapper/021:36:510
337810599255144,67cyclictest171rcu_preempt21:07:060
337810599255144,67cyclictest171rcu_preempt21:07:060
337810599254140,73cyclictest3381740-21/usr/sbin/munin19:30:410
337810599253143,97cyclictest3378104-21cyclictest19:36:490
337810599253143,97cyclictest3378104-21cyclictest19:36:490
337810599251136,102cyclictest3378104-21cyclictest19:26:000
337810599250128,105cyclictest9150irq/87-eth%d20:46:050
337810599247140,58cyclictest171rcu_preempt23:55:080
337810599247140,58cyclictest171rcu_preempt23:55:070
337810599247134,95cyclictest0-21swapper/020:21:040
337810599247134,95cyclictest0-21swapper/020:21:040
337810599247133,72cyclictest3385606-21kworker/u9:3-xprtiod20:16:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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