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2025-12-03 - 18:18

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 Wed Dec 03, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38251452240174,22sleep30-21swapper/307:06:343
38251792232171,48sleep10-21swapper/107:07:041
38251692226169,19sleep00-21swapper/007:06:550
38252832220168,17sleep20-21swapper/207:08:332
38250922218163,17sleep60-21swapper/607:05:496
38225412217179,24sleep70-21swapper/707:05:017
38251472216183,21sleep50-21swapper/507:06:375
38251172207177,19sleep40-21swapper/407:06:104
382562099250,2cyclictest3924557-21awk10:00:006
3825602992521,4cyclictest3834821-21awk07:25:011
382562599240,2cyclictest4005345-21perf12:20:007
382562599240,23cyclictest0-21swapper/708:30:007
382560599240,23cyclictest3875368-21perf08:34:592
3825602992423,1cyclictest3899163-21apt-get09:15:121
382560299240,23cyclictest3913064-21cron09:40:011
3825600992422,1cyclictest0-21swapper/010:50:000
3825625992321,1cyclictest0-21swapper/709:45:017
382562599230,21cyclictest3838083-21apt-get07:30:137
382562099230,22cyclictest3884362-21apt-get08:50:136
382562099230,22cyclictest0-21swapper/608:55:146
3825617992321,1cyclictest3878656-21apt-get08:40:115
382561799230,2cyclictest3987952-21awk11:50:015
382561799230,23cyclictest3837680-21idleruntime-cro07:30:005
382561799230,22cyclictest3956474-21sh10:55:005
382561799230,22cyclictest3924496-21cron10:00:005
3825612992323,0cyclictest0-21swapper/407:15:014
382561299230,22cyclictest3947635-21idleruntime-cro10:40:014
382561299230,22cyclictest3840517-21munin-run07:35:004
382560799230,1cyclictest4011065-21munin-run12:30:003
382560799230,1cyclictest0-21swapper/311:00:143
382560799230,1cyclictest0-21swapper/311:00:143
382560799230,1cyclictest0-21swapper/310:00:013
382560799230,1cyclictest0-21swapper/308:40:003
382560599230,22cyclictest0-21swapper/210:10:112
382560599230,22cyclictest0-21swapper/209:20:122
382560599230,22cyclictest0-21swapper/207:55:122
382560299230,22cyclictest0-21swapper/109:55:001
382560299230,1cyclictest0-21swapper/112:15:001
3825600992322,1cyclictest0-21swapper/007:35:140
3825600992321,1cyclictest4016776-21munin-run12:40:010
3825600992321,1cyclictest0-21swapper/012:05:000
382560099230,22cyclictest3963253-21diskstats11:05:130
382560099230,22cyclictest0-21swapper/007:10:130
382562599229,0cyclictest0-21swapper/711:39:537
382562599229,0cyclictest0-21swapper/710:22:597
3825625992221,1cyclictest0-21swapper/707:15:007
382562599220,21cyclictest3939500-21apt-get10:25:137
382562599220,21cyclictest0-21swapper/711:15:147
382562599220,1cyclictest3976489-21idleruntime-cro11:30:007
3825620992221,1cyclictest3858378-21apt-get08:05:126
3825620992221,1cyclictest0-21swapper/610:10:016
3825620992220,2cyclictest3866786-21munin-run08:19:596
3825620992220,1cyclictest3979770-21apt-get11:35:116
382562099220,21cyclictest0-21swapper/611:25:116
382562099220,1cyclictest0-21swapper/612:00:006
3825617992219,2cyclictest3988354-21apt-get11:50:115
382561799220,21cyclictest3892521-21munin-run09:05:005
382561799220,21cyclictest0-21swapper/512:25:145
382561799220,21cyclictest0-21swapper/509:45:135
382561799220,1cyclictest650-21dbus-daemon10:20:005
382561799220,1cyclictest3855089-21munin-run08:00:015
3825612992220,1cyclictest4000050-21apt-get12:10:144
382561299220,21cyclictest0-21swapper/411:55:124
382561299220,21cyclictest0-21swapper/410:05:124
382561299220,21cyclictest0-21swapper/409:40:134
382561299220,0cyclictest0-21swapper/408:10:124
382560799220,22cyclictest3913093-21perf09:40:003
382560799220,21cyclictest3916378-21apt-get09:45:123
382560799220,21cyclictest0-21swapper/308:30:123
382560799220,21cyclictest0-21swapper/308:20:143
382560799220,1cyclictest3982649-21apt-get11:40:133
382560799220,1cyclictest0-21swapper/312:00:013
382560799220,1cyclictest0-21swapper/307:25:123
3825605992221,1cyclictest3840938-21apt-get07:35:142
3825605992221,1cyclictest0-21swapper/209:45:122
3825605992221,0cyclictest0-21swapper/208:00:152
3825605992218,3cyclictest842-21runrttasks07:15:152
382560599220,21cyclictest3979770-21apt-get11:35:122
382560599220,21cyclictest0-21swapper/207:40:022
3825602992220,1cyclictest3814025-21kworker/1:1+events10:10:111
382560299220,22cyclictest0-21swapper/110:10:001
382560299220,22cyclictest0-21swapper/107:40:021
382560299220,1cyclictest3907397-21awk09:30:001
382560299220,1cyclictest3866795-21systemctl08:20:001
382560299220,1cyclictest311rcuc/111:30:121
3825600992221,1cyclictest0-21swapper/009:20:010
3825600992220,1cyclictest3956902-21apt-get10:55:120
3825600992220,1cyclictest3956902-21apt-get10:55:110
3825600992220,1cyclictest3852652-21apt-get07:55:130
3825600992220,1cyclictest0-21swapper/007:20:000
382560099220,21cyclictest3967908-21turbostat11:15:010
382560099220,21cyclictest0-21swapper/012:15:120
382560099220,21cyclictest0-21swapper/011:30:120
382560099220,21cyclictest0-21swapper/008:20:150
382562599218,0cyclictest0-21swapper/712:01:517
382562599218,0cyclictest0-21swapper/710:12:007
382562599218,0cyclictest0-21swapper/709:17:067
382562599218,0cyclictest0-21swapper/708:55:077
382562599218,0cyclictest0-21swapper/708:44:087
3825625992121,0cyclictest0-21swapper/710:05:137
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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