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2026-07-02 - 02:55

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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 20 highest latencies:
System rack7slot3s.osadl.org (updated Thu Jul 02, 2026 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1017299926,62cyclictest0-21swapper/023:50:120
1017299826,37cyclictest0-21swapper/021:10:240
1017299811,9cyclictest24467-21ssh22:30:380
10172998016,39cyclictest8318-21ssh22:50:380
133732770,6sleep21018699cyclictest00:15:292
10172997717,45cyclictest0-21swapper/023:50:350
1017299771,61cyclictest25651-21timerandwakeup19:50:370
10172997634,27cyclictest2281-21latency_hist22:05:120
318942750,4sleep21018699cyclictest21:21:402
10172997516,38cyclictest9589-21ntp_states00:10:370
10172997417,46cyclictest9158-21timerandwakeup23:30:380
219462730,5sleep11017999cyclictest23:07:081
1017299738,54cyclictest13920-21basename19:20:230
1017299732,52cyclictest19357-21ssh22:25:270
1017299731,50cyclictest832-21switchtime23:20:390
10172997314,45cyclictest0-21swapper/020:18:090
10172997214,47cyclictest0-21swapper/021:00:340
1017299721,20cyclictest7404-21ssh22:10:350
1017299716,46cyclictest0-21swapper/000:30:280
1017299711,51cyclictest10823-21rm21:35:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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