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2026-04-09 - 15:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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: 50.5 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 rack5slot7s.osadl.org (updated Thu Apr 09, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18871224402202,97sleep00-21swapper07:08:150
191109916517,123cyclictest7731-21apt-get09:17:000
191109916416,124cyclictest6167-21munin-run12:20:010
191109916113,123cyclictest30500-21apt-get08:15:240
191109916017,118cyclictest17196-21apt-get10:10:270
191109915940,23cyclictest22079-21sshd07:22:380
191109915817,118cyclictest24489-21munin-run07:40:020
191109915813,120cyclictest8920-21wc12:35:440
191109915811,121cyclictest15441-21sendmail-mta10:00:030
191109915810,26cyclictest272-21snmpd09:36:390
191109915716,117cyclictest18866-21munin-run10:20:030
191109915716,114cyclictest18987-21apt-get10:20:150
19110991569,106cyclictest28093-21tr11:15:480
191109915630,19cyclictest0-21swapper11:30:420
191109915613,121cyclictest26106-21apt11:05:020
191109915611,121cyclictest24766-21uname10:55:380
191109915511,99cyclictest13072-21wc09:45:040
191109915430,24cyclictest27505-21grep07:55:510
191109915419,27cyclictest6899-21users09:06:060
191109915415,115cyclictest23691-21munin-run10:50:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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