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2025-05-05 - 04:20

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 Mon May 05, 2025 00:41:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2330854996039,5cyclictest0-21swapper/121:15:011
2330855995216,30cyclictest2422425-21sh22:27:212
2330853995244,5cyclictest2515003-21ssh00:40:010
2330855995142,6cyclictest2502468-21cron00:20:012
2330855994827,18cyclictest0-21swapper/223:15:012
2330855994732,12cyclictest2372290-21missed_timers21:17:212
2330855994732,12cyclictest2372290-21missed_timers21:17:212
233085599471,16cyclictest2352774-21ntpq20:22:292
2330853994736,8cyclictest2488771-21latency_hist00:00:020
2330853994639,4cyclictest2502469-21ssh00:20:010
2330855994524,18cyclictest2384677-21sh21:34:452
2330854994537,5cyclictest2515003-21ssh00:40:011
2330853994538,4cyclictest2509063-21systemd-run00:30:010
2330854994436,5cyclictest2415829-21unixbench-2d22:17:401
2330853994435,6cyclictest422-21dbus-daemon21:12:300
233085599434,15cyclictest2390263-21ntpq21:42:272
233085599432,7cyclictest2361643-21ntpq20:52:222
233085599432,6cyclictest2507575-21ntpq00:27:262
233085599431,11cyclictest2346786-21ntpq20:02:282
2330853994335,5cyclictest2363784-21true21:00:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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