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2026-07-19 - 05:45

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Sun Jul 19, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86190723330,2sleep3584-21kworker/3:2-events21:37:403
100018022040,6sleep30-21swapper/323:57:343
97348122030,2sleep30-21swapper/323:32:303
81453021930,2sleep3471rcuc/320:52:293
711514996343,18cyclictest827079-21ntpq21:02:340
711514995644,9cyclictest281-21systemd-journal23:40:000
9280812550,4chrt0-21swapper/022:47:250
9280812550,4chrt0-21swapper/022:47:250
711514995346,5cyclictest852634-21latency_hist21:30:010
711522995243,6cyclictest738579-21cat19:35:002
711517995236,14cyclictest808458-21/usr/sbin/munin20:47:401
711514994725,4cyclictest789619-21sed20:27:300
711517994624,20cyclictest723701-21/usr/sbin/munin19:22:351
711514994638,6cyclictest857549-21latency_hist21:35:000
711514994636,8cyclictest779058-21diskstats20:17:290
711517994438,4cyclictest788495-21kworker/u8:0+events_unbound20:37:381
711522994333,7cyclictest877611-21store21:55:012
711517994226,14cyclictest833968-21irqrtprio21:12:291
711517994223,16cyclictest281-21systemd-journal23:08:391
711517994124,15cyclictest885341-21kthreadcore22:02:321
711517994124,15cyclictest804265-21irqrtprio20:42:301
711517994124,15cyclictest804265-21irqrtprio20:42:301
711517994122,17cyclictest832557-21unixbench_multi21:07:431
711517994122,17cyclictest753629-21apt-key19:50:011
711514994132,7cyclictest883156-21/usr/sbin/munin22:02:410
711514994131,8cyclictest832059-21ntpq21:07:360
711514994122,3cyclictest991801-21ls23:50:010
711514994122,3cyclictest991801-21ls23:50:000
70678524128,8sleep30-21swapper/319:05:543
711517994025,13cyclictest0-21swapper/123:12:301
711517994024,14cyclictest978116-21irqrtprio23:37:301
711517994023,15cyclictest971798-21unixbench_singl23:27:431
711517993925,12cyclictest867459-21awk21:45:001
711517993923,14cyclictest911352-21kthreadcore22:27:341
711517993922,15cyclictest788754-21aten2_r5power_e20:27:241
711514993930,7cyclictest962111-21latency_hist23:20:010
711517993833,4cyclictest31241-21kworker/u8:1+flush-8:019:42:291
711517993831,5cyclictest691358-21kworker/u8:0+flush-8:019:11:451
711517993822,14cyclictest842728-21munin-run21:20:001
711517993822,14cyclictest1-21systemd20:16:391
711517993822,14cyclictest0-21swapper/119:37:261
711517993821,16cyclictest771430-21kthreadcore20:07:321
711517993821,15cyclictest1001687-21unixbench_multi23:57:441
711514993831,5cyclictest711837-21/usr/sbin/munin19:12:390
711514993830,6cyclictest1002391-21/usr/sbin/munin00:02:340
9179702370,2sleep20-21swapper/222:37:242
711517993722,13cyclictest0-21swapper/120:00:001
711517993719,16cyclictest847111-21processes21:22:421
711517993717,3cyclictest0-21swapper/123:17:381
711517993717,3cyclictest0-21swapper/119:17:241
711517993716,2cyclictest0-21swapper/100:27:251
711517993711,8cyclictest926565-21ntpq22:42:361
711514993731,4cyclictest691358-21kworker/u8:0+events_unbound19:27:290
711514993730,5cyclictest986154-21ntpq23:42:380
711514993729,6cyclictest281-21systemd-journal20:45:010
711514993729,6cyclictest281-21systemd-journal20:45:000
711517993618,2cyclictest0-21swapper/120:02:301
711517993618,17cyclictest0-21swapper/121:32:401
711517993617,8cyclictest877405-21cat21:55:011
711517993617,3cyclictest0-21swapper/123:52:401
711517993617,2cyclictest0-21swapper/120:22:381
711517993617,2cyclictest0-21swapper/119:27:421
711517993616,3cyclictest734810-21irqrtprio19:32:321
711517993614,2cyclictest161rcu_preempt22:40:001
711514993628,6cyclictest942536-21/usr/sbin/munin23:02:410
8279912350,2sleep3584-21kworker/3:2-events21:05:013
711517993527,6cyclictest1007586-21cpuspeed_turbos00:07:251
711517993518,15cyclictest822674-21unixbench_singl20:57:421
711517993517,2cyclictest0-21swapper/122:52:341
711517993516,3cyclictest1006915-21cron00:05:001
711517993516,2cyclictest0-21swapper/123:02:261
711517993516,2cyclictest0-21swapper/119:52:421
711514993531,3cyclictest936434-21kworker/u8:2+events_unbound23:13:380
711514993531,3cyclictest837778-21kworker/u8:0+events_unbound22:17:150
711514993530,4cyclictest837778-21kworker/u8:0+events_unbound22:59:130
711514993530,4cyclictest654600-21kworker/u8:2+flush-8:019:17:100
711514993525,8cyclictest921570-21ntpq22:37:350
711514993525,8cyclictest797403-21ntpq20:32:370
711517993428,4cyclictest902334-21unixbench_singl22:17:411
711517993418,2cyclictest0-21swapper/122:15:001
711517993417,15cyclictest0-21swapper/100:37:381
711517993414,3cyclictest0-21swapper/121:57:271
711517993414,3cyclictest0-21swapper/121:40:001
10245872340,5sleep01024591-21kthreadcore00:22:300
711517993317,3cyclictest0-21swapper/100:17:271
711517993316,15cyclictest0-21swapper/122:22:361
711517993315,7cyclictest281-21systemd-journal00:25:001
711517993315,16cyclictest0-21swapper/123:47:391
711517993315,16cyclictest0-21swapper/123:47:391
711517993314,3cyclictest0-21swapper/123:42:261
711514993326,5cyclictest862955-21apt-get21:42:210
711514993326,4cyclictest758874-21kworker/u8:2+events_unbound20:05:020
711514993325,6cyclictest923004-21diskstats22:42:260
71151499332,29cyclictest947087-21kworker/0:2+events23:22:170
711517993216,4cyclictest796868-21kthreadcore20:32:331
711517993214,3cyclictest0-21swapper/121:05:001
71151799320,9cyclictest777716-21ld20:12:381
711514993227,4cyclictest31241-21kworker/u8:1+events_unbound20:11:180
71151499322,29cyclictest847742-21kworker/0:1+events21:39:110
71151799318,3cyclictest0-21swapper/122:05:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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