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2026-01-01 - 22:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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.
Unexpectedly long latencies may be caused by SMIs
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 rackcslot7s.osadl.org (updated Thu Jan 01, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
197399960,9rtkit-daemon1972-21rtkit-daemon07:29:041
197399920,9rtkit-daemon1972-21rtkit-daemon12:06:412
197399900,8rtkit-daemon1972-21rtkit-daemon08:45:562
197399900,8rtkit-daemon1972-21rtkit-daemon07:21:371
30841632880,6sleep04497-21PK-Backend11:25:140
197399880,9rtkit-daemon1972-21rtkit-daemon11:51:102
197399880,9rtkit-daemon1972-21rtkit-daemon11:48:362
197399820,10rtkit-daemon3021225-21irqstats08:25:213
197399810,71rtkit-daemon0-21swapper/107:07:251
30339442790,5sleep20-21swapper/209:00:332
299337527941,31sleep30-21swapper/307:07:103
30441422760,12sleep2141rcu_preempt09:30:312
30639132740,4chrt3063914-21/usr/sbin/munin10:25:300
299288227244,20sleep00-21swapper/007:05:230
299334426847,14sleep20-21swapper/207:06:452
299374899603,15cyclictest3002537-21chrt07:31:370
197399600,9rtkit-daemon1972-21rtkit-daemon10:25:153
197399600,9rtkit-daemon1972-21rtkit-daemon08:54:152
197399600,9rtkit-daemon1972-21rtkit-daemon08:54:142
299374899593,13cyclictest2997273-21chrt07:15:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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