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2026-03-12 - 03:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

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 rack8slot4s.osadl.org (updated Thu Mar 12, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39982212225194,20sleep20-21swapper/219:09:122
39981702225160,22sleep50-21swapper/519:08:265
39981402216159,18sleep40-21swapper/419:08:014
39981632214161,17sleep70-21swapper/719:08:197
39979892210180,19sleep10-21swapper/119:05:481
39979672210177,21sleep60-21swapper/619:05:296
39958382206179,17sleep00-21swapper/019:05:070
39958302205175,19sleep30-21swapper/319:05:033
40749852470,0sleep50-21swapper/521:20:125
399869599297,4cyclictest0-21swapper/721:00:387
399869599297,4cyclictest0-21swapper/719:32:457
399869599297,4cyclictest0-21swapper/700:18:187
399869599286,4cyclictest0-21swapper/721:33:357
399869299260,22cyclictest0-21swapper/619:35:096
399869299260,21cyclictest0-21swapper/600:25:156
3998670992623,2cyclictest4131730-21apt-get23:00:110
399869599257,0cyclictest0-21swapper/721:55:337
399869599257,0cyclictest0-21swapper/721:11:377
399869299250,1cyclictest4186340-21apt-get00:35:116
3998683992523,1cyclictest4102730-21dump-pmu-power22:10:014
399868399250,24cyclictest4140282-21apt-get23:15:134
399867799250,24cyclictest4099887-21idleruntime-cro22:05:002
399867799250,24cyclictest0-21swapper/222:25:112
399867399250,24cyclictest4188775-21munin-run00:40:001
399869599247,0cyclictest0-21swapper/723:56:217
399869599247,0cyclictest0-21swapper/722:28:297
399869599247,0cyclictest0-21swapper/721:44:337
399869599247,0cyclictest0-21swapper/700:29:187
399869599240,24cyclictest0-21swapper/719:15:007
399869299240,21cyclictest0-21swapper/620:50:016
399868699240,23cyclictest4005090-21awk19:20:005
399868399240,22cyclictest4131298-21dump-pmu-power23:00:004
399867799240,24cyclictest4091301-21turbostat.cron21:50:002
3998695992321,1cyclictest4048616-21apt-get20:35:127
3998692992320,2cyclictest0-21swapper/623:35:126
399869299230,22cyclictest0-21swapper/620:15:006
399869299230,22cyclictest0-21swapper/620:15:006
399868699230,22cyclictest4039630-21munin-run20:20:015
399868699230,22cyclictest4039630-21munin-run20:20:005
399868399230,22cyclictest4165899-21idleruntime-cro23:59:594
399868399230,22cyclictest363-21systemd-journal23:29:594
399868399230,22cyclictest0-21swapper/419:30:004
3998679992321,1cyclictest0-21swapper/322:19:593
399867999230,23cyclictest4188809-21basename00:40:003
399867999230,22cyclictest4177387-21grep00:20:003
399867999230,22cyclictest363-21systemd-journal23:59:593
399867999230,1cyclictest0-21swapper/323:00:003
3998677992323,0cyclictest0-21swapper/223:00:122
3998677992321,1cyclictest4031487-21apt-get20:05:112
3998677992321,1cyclictest0-21swapper/200:40:002
3998677992321,1cyclictest0-21swapper/200:00:112
399867799230,23cyclictest4128432-21dump-pmu-power22:54:592
399867799230,22cyclictest0-21swapper/219:30:112
399867799230,21cyclictest0-21swapper/220:10:132
399867799230,21cyclictest0-21swapper/220:10:132
3998673992322,1cyclictest4123155-21apt-get22:45:121
3998673992322,1cyclictest311rcuc/119:50:121
3998670992321,1cyclictest0-21swapper/022:10:110
3998695992220,1cyclictest4091731-21apt-get21:50:147
3998695992220,1cyclictest0-21swapper/722:25:007
399869599220,4cyclictest0-21swapper/723:01:267
399869599220,21cyclictest4154847-21apt-get23:40:107
399869599220,21cyclictest0-21swapper/720:45:117
399869599220,21cyclictest0-21swapper/719:20:117
399869599220,1cyclictest4079871-21sh21:30:017
399869599220,1cyclictest4039639-21awk20:20:017
399869599220,1cyclictest4039639-21awk20:20:017
3998692992220,1cyclictest0-21swapper/621:00:106
3998692992219,3cyclictest0-21swapper/621:35:016
399869299220,21cyclictest4031487-21apt-get20:05:106
399869299220,21cyclictest0-21swapper/623:10:116
399869299220,21cyclictest0-21swapper/621:40:136
399869299220,21cyclictest0-21swapper/620:50:116
399869299220,21cyclictest0-21swapper/620:35:116
399869299220,21cyclictest0-21swapper/620:30:096
399869299220,21cyclictest0-21swapper/600:19:596
3998686992222,0cyclictest0-21swapper/523:10:115
3998686992221,1cyclictest0-21swapper/519:35:105
3998686992220,1cyclictest4174915-21apt-get00:15:125
3998686992220,1cyclictest0-21swapper/522:50:005
399868699220,21cyclictest4183489-21apt-get00:30:115
399868699220,21cyclictest4137012-21munin-run23:09:595
399868699220,21cyclictest0-21swapper/522:35:105
399868699220,21cyclictest0-21swapper/522:15:115
399868699220,21cyclictest0-21swapper/520:40:005
399868699220,21cyclictest0-21swapper/500:10:125
399868699220,1cyclictest4079875-21sh21:30:005
399868699220,1cyclictest0-21swapper/523:34:595
399868699220,1cyclictest0-21swapper/520:00:015
399868699220,1cyclictest0-21swapper/519:25:005
3998683992220,1cyclictest4169211-21apt-get00:05:114
3998683992220,1cyclictest4151975-21apt-get23:35:114
399868399220,21cyclictest0-21swapper/423:30:104
399868399220,21cyclictest0-21swapper/421:40:134
399868399220,21cyclictest0-21swapper/420:30:094
399868399220,21cyclictest0-21swapper/420:00:144
3998679992221,1cyclictest0-21swapper/321:10:103
3998679992220,1cyclictest4111312-21munin-run22:24:593
3998679992220,1cyclictest0-21swapper/320:55:013
399867999220,21cyclictest0-21swapper/322:40:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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