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2026-07-05 - 19:39

OSADL QA Farm on Real-time of Mainline Linux

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

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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  Phytec
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 20 highest latencies:
System rackbslot5s.osadl.org (updated Sun Jul 05, 2026 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2216224996436,9cyclictest231ktimers/108:05:111
2216229995339,12cyclictest311ktimers/210:35:132
2216224995339,10cyclictest231ktimers/111:40:111
2216229995026,12cyclictest131rcu_preempt08:35:122
2216220994739,6cyclictest121ktimers/007:15:120
2216229994637,5cyclictest2268877-21mailstats09:35:232
2216233994332,8cyclictest2256853-21grep09:00:273
2216229994332,8cyclictest2262586-21sendmail09:20:002
2216229994332,8cyclictest2262586-21sendmail09:20:002
2216229994232,6cyclictest2223592-21cut07:30:022
2216233994130,7cyclictest2274709-21cron09:55:003
2216220994131,7cyclictest2227203-21munin-run07:40:010
2216229994033,3cyclictest2260800-21latency_hist09:15:012
2216233993932,4cyclictest2231266-21systemd07:50:013
2216233993929,7cyclictest2303942-21sendmail11:20:003
2216229993932,5cyclictest2237178-21kworker/u8:1+events_unbound08:30:132
2216229993930,7cyclictest2225273-21kworker/u8:2+events_unbound07:35:002
2216229993929,6cyclictest2245096-21auditctl08:30:002
2216224993831,4cyclictest2290082-21idleruntime-cro10:40:001
2216220993830,4cyclictest0-21swapper/008:50:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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