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2025-04-04 - 09:55

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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.
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 50 highest latencies:
System rackcslot7s.osadl.org (updated Fri Apr 04, 2025 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
47493822960,5sleep22197014-21PK-Backend19:05:142
5777102980,8sleep02197014-21PK-Backend00:20:230
162399980,9rtkit-daemon1622-21rtkit-daemon19:49:522
162399980,8rtkit-daemon1622-21rtkit-daemon19:31:122
162399970,9rtkit-daemon1622-21rtkit-daemon21:09:232
47587329660,28sleep10-21swapper/119:05:481
162399890,7rtkit-daemon1622-21rtkit-daemon21:00:102
162399880,9rtkit-daemon1622-21rtkit-daemon19:19:032
162399850,9rtkit-daemon1622-21rtkit-daemon19:36:252
5678132800,6sleep2859-21NetworkManager23:50:272
162399770,5rtkit-daemon0-21swapper/120:29:521
47585527660,10sleep00-21swapper/019:05:340
47613227345,20sleep30-21swapper/319:09:103
162399650,9rtkit-daemon1622-21rtkit-daemon00:34:260
162399640,42rtkit-daemon1753-21gnome-shell20:20:180
162399600,9rtkit-daemon1622-21rtkit-daemon20:49:092
5257852590,8chrt0-21swapper/021:30:220
162399580,8rtkit-daemon1622-21rtkit-daemon19:41:402
162399580,8rtkit-daemon1622-21rtkit-daemon19:33:383
162399570,9rtkit-daemon1622-21rtkit-daemon20:59:383
5176612560,8sleep01753-21gnome-shell21:05:220
476343995614,37cyclictest487135-21idleruntime-cro19:39:591
476343995518,32cyclictest528668-21tr21:40:151
476343995518,32cyclictest528668-21tr21:40:151
47634399544,46cyclictest480633-21cpuspeed_turbos19:20:131
476343995419,31cyclictest488974-21sed19:45:011
476343995418,31cyclictest569822-21ls23:55:321
476343995417,32cyclictest2284-21update-notifier00:15:321
476343995417,32cyclictest2284-21update-notifier00:15:311
476343995416,33cyclictest554087-21seq23:05:121
476343995415,34cyclictest2181-21gdbus23:00:001
476343995415,33cyclictest438-20systemd-journal19:30:031
476343995324,25cyclictest479469-21ntp_kernel_err19:15:231
476343995323,26cyclictest1-21systemd20:55:001
476343995316,33cyclictest855-21dbus-daemon22:30:001
476343995315,32cyclictest568631-21date23:55:011
162399530,8rtkit-daemon1622-21rtkit-daemon19:15:183
476343995216,32cyclictest538931-21cat22:15:161
476343995212,34cyclictest489251-21cat19:45:141
476343995122,25cyclictest1069-21runrttasks21:39:131
476343995118,29cyclictest499251-21idleruntime-cro20:15:001
476343995117,28cyclictest517162-21apt21:05:141
47634599506,40cyclictest1622-21rtkit-daemon19:51:352
47634599506,40cyclictest1622-21rtkit-daemon19:51:342
476343995022,24cyclictest497140-21chrt20:05:301
47634399502,14cyclictest581987-21memory00:35:201
476343995018,26cyclictest566108-21latency_hist23:45:021
476343995014,32cyclictest532237-21seq21:54:241
47634399501,11cyclictest522651-21cat21:20:131
162399500,39rtkit-daemon42-21ksoftirqd/322:14:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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