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2026-06-13 - 15:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

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: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack4slot6s.osadl.org (updated Sat Jun 13, 2026 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2342622580,2sleep023425-21cat09:50:250
1670622390,3sleep016703-21ps11:30:240
606821280,4chrt6065-21df10:50:120
868221180,5chrt8683-21latency_hist08:55:020
297172990,3sleep029721-21ntp_states10:15:220
285072910,3sleep028550-21ntpq08:05:200
196822910,3sleep019749-21cat07:30:270
156362890,3sleep015662-21/usr/sbin/munin11:25:280
279642870,4sleep028014-21/usr/sbin/munin12:15:130
246662870,2sleep024667-21sort12:00:280
325142770,4sleep032583-21/usr/sbin/munin10:25:290
270122770,3sleep027051-21load10:05:180
155002776,58sleep015503-21irqstats07:15:170
1393727721,32sleep013949-21munin-run07:10:010
321342755,59sleep032138-21ntp_states12:30:220
255862710,2sleep025585-21memory12:05:180
193912680,2sleep019392-21cat09:35:210
190422680,2sleep019043-21latency_hist09:35:010
1397699628,15cyclictest14808-21sshd07:11:330
13976996231,22cyclictest12843-21/usr/sbin/munin09:10:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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