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2025-10-26 - 03:46

OSADL QA Farm on Real-time of Mainline Linux

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

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack2slot7s.osadl.org (updated Sun Oct 26, 2025 00:40:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2967346995337,11cyclictest1143852-21cups-browsed21:14:011
2967345995233,15cyclictest12450irq/32-eth021:18:590
296734599521,25cyclictest3044442-21ssh22:04:000
296734599521,25cyclictest3044442-21ssh22:04:000
2967346995042,5cyclictest3011018-21munin-run21:20:011
2967346995041,6cyclictest2974851-21systemd-run19:35:011
2967345995039,8cyclictest3080066-21latency_hist22:50:020
2967346994837,6cyclictest0-21swapper/100:03:591
296734599483,38cyclictest3101808-21ssh23:19:060
2967345994833,12cyclictest2983866-21latency_hist20:05:020
2967345994818,26cyclictest3120682-21ssh23:43:570
2967346994640,3cyclictest0-21swapper/100:30:011
2967346994628,12cyclictest0-21swapper/122:29:031
2967345994638,5cyclictest3106577-21systemd-run23:25:010
2967347994436,5cyclictest2977852-21systemd-run19:45:012
2967345994429,12cyclictest266-21systemd-journal20:54:570
2967347994336,4cyclictest2970337-21munin-run19:20:012
2967347994336,3cyclictest0-21swapper/221:33:582
2967346994335,5cyclictest2997344-21systemd-run20:50:021
2967346994335,5cyclictest2982356-21systemd-run20:00:021
2967345994332,8cyclictest3072504-21ssh22:40:010
2967346994234,5cyclictest3024996-21missed_timers21:38:521
2967346994233,6cyclictest3114221-21systemd-run23:35:011
2967347994134,3cyclictest0-21swapper/223:39:012
2967347994132,6cyclictest3104983-21cat23:23:492
2967347994132,6cyclictest3102027-21/usr/sbin/munin23:19:122
2967346994133,5cyclictest3133152-21munin-run00:00:011
2967346994133,5cyclictest3068612-21munin-plugin-st22:35:011
2967346994133,5cyclictest2985398-21latency_hist20:10:021
2967345994135,3cyclictest0-21swapper/022:00:010
2967345994134,4cyclictest956-21mta-sts-daemon22:10:360
2967345994134,4cyclictest3113659-21unixbench-2d23:34:080
2967345994134,4cyclictest3026361-21latency_hist21:40:020
2967345994133,6cyclictest0-21swapper/023:55:010
296734599412,13cyclictest14-21ksoftirqd/021:54:020
2967347994033,3cyclictest0-21swapper/223:33:552
2967346994032,5cyclictest3076276-21cron22:45:011
296734699401,7cyclictest171rcu_preempt22:54:031
2967347993933,3cyclictest0-21swapper/221:48:572
296734799392,31cyclictest3160959-21ssh00:39:022
296734799392,28cyclictest3135867-21ssh00:04:012
2967345993933,4cyclictest3087641-21idleruntime-cro23:00:010
2967345993933,3cyclictest0-21swapper/000:00:010
2967345993932,4cyclictest3117529-21unixbench_singl23:39:110
296734599392,31cyclictest3021482-21ssh21:34:000
2967347993830,5cyclictest3030068-21cron21:45:012
296734699383,28cyclictest3143436-21ssh00:14:011
2967346993831,3cyclictest0-21swapper/123:09:061
2967346993828,6cyclictest1143852-21cups-browsed20:20:011
296734599383,28cyclictest3059802-21ssh22:23:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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