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2025-11-29 - 06:43

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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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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.
Unexpectedly long latencies may be caused by SMIs
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 100 highest latencies:
System rackeslot5s.osadl.org (updated Sat Nov 29, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3247399260,25cyclictest1-21systemd00:10:001
3247799251,22cyclictest313-21systemd-journal19:25:002
32477992421,2cyclictest10256-21sh22:50:002
3247399240,23cyclictest10742-21apt-get22:52:461
32480992321,1cyclictest0-21swapper/323:50:003
3248099230,22cyclictest0-21swapper/321:37:453
3248099230,22cyclictest0-21swapper/321:37:453
3247799230,2cyclictest25129-21idleruntime-cro23:20:002
3247799230,22cyclictest12818-21perf19:35:002
32469992320,2cyclictest2401-21sh19:15:000
3246999230,2cyclictest11926-21cron23:59:590
32480992220,1cyclictest7648-21perf19:24:593
32480992220,1cyclictest22198-21apt-get21:02:473
32480992220,1cyclictest0-21swapper/321:22:453
3248099220,22cyclictest0-21swapper/322:32:453
3248099220,21cyclictest14525-21cron20:45:003
3248099220,21cyclictest0-21swapper/320:12:423
3248099220,21cyclictest0-21swapper/320:07:433
3248099220,1cyclictest30286-21munin-run22:25:003
3248099220,1cyclictest29934-21turbostat23:30:013
3247799221,20cyclictest15259-21awk19:40:002
3247799220,2cyclictest3072-21awk22:35:002
3247799220,21cyclictest29665-21cron20:09:592
3247799220,21cyclictest2829-21apt-get23:42:472
3247799220,21cyclictest25433-21cron22:14:592
3247799220,21cyclictest16265-21apt-get21:57:442
3247799220,21cyclictest13866-21apt-get21:52:442
3247799220,21cyclictest0-21swapper/220:35:002
3247799220,21cyclictest0-21swapper/219:57:432
3247799220,1cyclictest31279-21munin-run00:40:002
3247799220,1cyclictest27826-21cron22:19:592
3247399220,21cyclictest5953-21apt-get22:42:461
3247399220,21cyclictest4253-21apt-get21:32:441
3247399220,21cyclictest27764-21apt-get20:07:431
3247399220,21cyclictest0-21swapper/120:55:001
32469992222,0cyclictest0-21swapper/023:02:440
3246999220,21cyclictest10890-21apt-get19:32:440
3246999220,21cyclictest0-21swapper/022:32:450
3246999220,21cyclictest0-21swapper/019:47:420
3246999220,1cyclictest12527-21apt-get00:02:450
32480992120,0cyclictest0-21swapper/300:37:453
32480992119,1cyclictest4763-21grep23:44:593
32480992119,1cyclictest0-21swapper/300:00:003
3248099210,20cyclictest0-21swapper/323:12:453
3248099210,20cyclictest0-21swapper/322:47:453
3248099210,20cyclictest0-21swapper/320:02:443
3248099210,20cyclictest0-21swapper/319:30:003
3248099210,20cyclictest0-21swapper/300:07:463
32477992121,0cyclictest0-21swapper/223:27:462
32477992121,0cyclictest0-21swapper/220:37:442
32477992120,1cyclictest20352-21apt-get23:12:452
32477992120,1cyclictest0-21swapper/200:27:442
32477992120,0cyclictest0-21swapper/200:32:462
32477992117,3cyclictest16920-21perf20:50:002
3247799210,20cyclictest32343-21sleep23:34:592
3247799210,0cyclictest22137-21apt-get00:22:462
3247799210,0cyclictest0-21swapper/222:37:442
3247799210,0cyclictest0-21swapper/200:02:452
32473992121,0cyclictest30289-21dpkg22:25:001
32473992121,0cyclictest0-21swapper/123:42:471
32473992121,0cyclictest0-21swapper/100:17:441
32473992120,1cyclictest25617-21apt-get23:22:451
32473992120,1cyclictest24532-21apt-get00:27:451
3247399211,0cyclictest29323-21apt-get00:37:451
3247399210,21cyclictest15560-21apt-get23:02:441
3247399210,21cyclictest0-21swapper/120:47:461
3247399210,20cyclictest593-21dbus-daemon22:10:001
3247399210,20cyclictest12141-21munin-run00:00:001
3247399210,20cyclictest10166-21apt-get20:37:441
3247399210,20cyclictest0-21swapper/121:17:461
3247399210,0cyclictest25369-21apt-get20:02:441
3247399210,0cyclictest0-21swapper/122:12:451
32469992121,0cyclictest0-21swapper/022:17:450
32469992121,0cyclictest0-21swapper/021:02:470
32469992119,1cyclictest26469-21munin-run00:30:000
32469992119,1cyclictest23528-21apt-get22:12:450
32469992119,1cyclictest0-21swapper/020:20:010
3246999210,21cyclictest61550irq/126-eno123:17:450
3246999210,21cyclictest0-21swapper/022:22:460
3246999210,21cyclictest0-21swapper/019:27:440
3246999210,20cyclictest0-21swapper/023:52:460
3246999210,20cyclictest0-21swapper/023:37:450
3246999210,20cyclictest0-21swapper/022:47:440
3246999210,20cyclictest0-21swapper/021:37:450
3246999210,20cyclictest0-21swapper/021:37:450
3246999210,20cyclictest0-21swapper/020:02:440
3246999210,20cyclictest0-21swapper/000:37:450
3246999210,1cyclictest5487-21ls22:40:010
3246999210,0cyclictest0-21swapper/023:32:460
3246999210,0cyclictest0-21swapper/022:57:440
3246999210,0cyclictest0-21swapper/022:52:450
32480992020,0cyclictest0-21swapper/323:22:453
32480992020,0cyclictest0-21swapper/322:17:443
32480992020,0cyclictest0-21swapper/321:32:433
32480992020,0cyclictest0-21swapper/321:17:463
32480992019,1cyclictest22317-21apt-get23:15:023
32480992019,0cyclictest0-21swapper/321:47:453
32480992019,0cyclictest0-21swapper/319:12:443
32480992018,1cyclictest26457-21grep00:30:003
32480992018,1cyclictest0-21swapper/300:15:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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