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2025-04-02 - 04:58

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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: 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 rack2slot7s.osadl.org (updated Wed Apr 02, 2025 00:41:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2136052995041,5cyclictest2256624-21sendmail23:20:012
2136051994538,5cyclictest2136049-21cyclictest00:27:381
213605199451,36cyclictest2192072-21ssh21:42:081
2136050994537,5cyclictest453-21systemd-logind22:45:020
2136051994436,5cyclictest2222841-21systemd-run22:30:011
2136051994435,6cyclictest422-21dbus-daemon19:45:011
2136050994336,4cyclictest2220406-21systemd-run22:25:010
2136050994335,5cyclictest2207198-21systemd-run22:05:020
2136051994234,5cyclictest2283393-21cmp00:00:011
2136051994234,5cyclictest2190323-21latency_hist21:40:021
2136051994234,5cyclictest2190323-21latency_hist21:40:021
2136050994235,4cyclictest421-21avahi-daemon23:12:090
2136051994133,5cyclictest2238456-21unixbench-2d22:52:151
2136051994130,8cyclictest2270059-21systemd-run23:40:021
2136051994130,8cyclictest2270059-21systemd-run23:40:021
2136052994032,5cyclictest2155786-21systemd-run20:20:022
2136052994028,9cyclictest266-21systemd-journal22:41:552
2136050994034,4cyclictest2152497-21cron20:05:010
2136050994034,4cyclictest2152497-21cron20:05:010
2136052993932,4cyclictest957-21mta-sts-daemon19:47:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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