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2025-09-16 - 18:06

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 Tue Sep 16, 2025 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1517515995548,5cyclictest1518961-21kworker/u8:0+events_unbound07:25:161
1517514995345,4cyclictest1583323-21munin-plugin-st10:19:590
1517519995041,5cyclictest1533416-21sh07:55:002
1517514994939,6cyclictest1577786-21grep10:00:270
1517514994824,19cyclictest0-21swapper/010:55:260
1517515994433,7cyclictest0-21swapper/107:35:151
1517514994417,7cyclictest121ktimers/008:40:090
1517514994319,21cyclictest0-21swapper/008:10:260
1517525994230,10cyclictest391ktimers/310:00:143
1517515994236,4cyclictest1555422-21kworker/u8:2+events_unbound09:00:331
1517514994231,7cyclictest1588003-21grep10:30:250
1517514994231,7cyclictest1588003-21grep10:30:250
1517515994033,5cyclictest1598545-21kworker/u8:1+events_unbound12:01:081
1517514994017,5cyclictest0-21swapper/009:10:280
1517514994017,5cyclictest0-21swapper/009:10:280
1517514994015,5cyclictest121ktimers/009:35:210
1517525993929,6cyclictest1624905-21sendmail12:19:593
1517519993931,4cyclictest0-21swapper/211:50:002
1517519993930,5cyclictest1543223-21unixbench_multi08:20:252
1517519993930,4cyclictest0-21swapper/207:15:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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