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2026-05-14 - 12:33

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 May 14, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33889512240171,56sleep00-21swapper/019:07:110
33889452233196,24sleep30-21swapper/319:07:063
33888372232194,25sleep10-21swapper/119:05:351
33890362222182,27sleep20-21swapper/219:08:252
33862122222188,22sleep70-21swapper/719:05:017
33890132221187,22sleep60-21swapper/619:08:066
33888962221183,25sleep40-21swapper/419:06:274
33891442215181,23sleep50-21swapper/519:09:585
338935699282,25cyclictest1-21systemd21:00:001
338936999270,4cyclictest3490348-21awk22:00:016
338937399260,25cyclictest3549302-21cron23:39:597
338936799250,24cyclictest0-21swapper/500:05:115
3389364992524,1cyclictest3405172-21apt-get19:35:124
338935899250,24cyclictest3564485-21apt-get00:05:112
338935899250,24cyclictest0-21swapper/221:05:112
338935899250,24cyclictest0-21swapper/221:05:112
338935699250,24cyclictest3581835-21sort00:35:001
3389373992423,1cyclictest0-21swapper/719:40:177
3389373992423,0cyclictest0-21swapper/722:15:127
338936999240,3cyclictest3428376-21awk20:15:006
338936799240,23cyclictest3410651-21perf19:45:005
338936799240,23cyclictest0-21swapper/522:20:115
3389364992423,1cyclictest3526181-21apt-get23:00:124
338936499240,24cyclictest3444885-21awk20:40:184
338936499240,24cyclictest3412348-21ntpq19:45:184
3389362992420,3cyclictest3581752-21basename00:34:593
338936299240,24cyclictest3546365-21munin-run23:35:003
338936299240,23cyclictest0-21swapper/320:00:123
338935899240,2cyclictest3469654-21apt-get21:25:032
338935699240,24cyclictest3477277-21ntpq21:35:161
338935699240,23cyclictest0-21swapper/122:30:001
3389373992321,1cyclictest0-21swapper/719:30:007
338937399230,22cyclictest0-21swapper/720:20:127
338937399230,1cyclictest0-21swapper/722:40:017
3389369992322,0cyclictest0-21swapper/623:30:186
3389369992321,2cyclictest3401795-21apt19:30:006
3389369992320,3cyclictest3540478-21ls23:25:006
338936999230,23cyclictest0-21swapper/621:05:116
338936999230,23cyclictest0-21swapper/621:05:116
338936999230,22cyclictest3581808-21appstreamcli00:35:006
338936999230,22cyclictest3467145-21apt-get21:20:136
338936999230,22cyclictest0-21swapper/621:10:136
3389367992323,0cyclictest0-21swapper/521:05:115
3389367992323,0cyclictest0-21swapper/521:05:115
338936799230,22cyclictest3525741-21perf23:00:005
338936799230,22cyclictest0-21swapper/523:30:115
338936799230,22cyclictest0-21swapper/521:50:115
338936799230,1cyclictest0-21swapper/500:05:005
3389364992323,0cyclictest0-21swapper/420:05:184
3389364992322,1cyclictest3555638-21apt-get23:50:134
3389364992322,1cyclictest3549352-21basename23:40:004
3389364992322,1cyclictest3542293-21sh23:25:184
338936499230,0cyclictest0-21swapper/420:30:104
3389362992322,1cyclictest0-21swapper/321:25:113
338936299230,23cyclictest0-21swapper/319:20:003
338936299230,22cyclictest3539349-21ntpq23:20:193
338936299230,22cyclictest3446521-21apt-get20:45:143
338936299230,22cyclictest0-21swapper/321:20:203
338936299230,22cyclictest0-21swapper/320:10:123
3389358992321,1cyclictest0-21swapper/220:35:002
338935899230,22cyclictest3581730-21apt-get00:35:032
338935899230,22cyclictest0-21swapper/223:45:202
338935899230,22cyclictest0-21swapper/222:05:122
338935899230,22cyclictest0-21swapper/221:50:112
338935899230,22cyclictest0-21swapper/221:10:202
338935899230,1cyclictest0-21swapper/222:30:172
338935699230,23cyclictest3466700-21munin-plugin-st21:19:591
338935699230,23cyclictest0-21swapper/120:40:001
338935699230,22cyclictest0-21swapper/121:40:111
338935699230,1cyclictest3569946-21ls00:15:001
338935699230,1cyclictest0-21swapper/122:55:181
338935699230,0cyclictest0-21swapper/119:50:101
338935599230,2cyclictest3537517-21turbostat23:20:000
338935599230,22cyclictest0-21swapper/023:50:120
338935599230,22cyclictest0-21swapper/021:00:130
338935599230,22cyclictest0-21swapper/021:00:130
338935599230,22cyclictest0-21swapper/020:45:130
338935599230,22cyclictest0-21swapper/019:45:140
338935599230,22cyclictest0-21swapper/019:35:120
3389373992222,0cyclictest0-21swapper/720:05:117
3389373992221,1cyclictest3561545-21apt-get00:00:117
3389373992221,1cyclictest3543846-21apt-get23:30:117
3389373992221,1cyclictest3428782-21apt-get20:15:147
3389373992221,1cyclictest3418323-21ntpq19:55:187
3389373992220,1cyclictest789-21dbus-daemon22:00:007
338937399220,22cyclictest3505088-21turbostat22:25:017
338937399220,21cyclictest3452397-21apt-get20:55:107
338937399220,21cyclictest0-21swapper/723:30:007
338937399220,21cyclictest0-21swapper/721:20:127
338937399220,21cyclictest0-21swapper/720:45:137
338937399220,21cyclictest0-21swapper/719:35:137
338937399220,21cyclictest0-21swapper/700:25:127
338937399220,1cyclictest3499186-21munin-run22:15:017
338937399220,1cyclictest0-21swapper/722:55:137
338937399220,1cyclictest0-21swapper/720:35:127
338937399220,0cyclictest0-21swapper/721:35:117
3389369992221,1cyclictest3554090-21ntpq23:45:206
3389369992221,1cyclictest0-21swapper/622:45:176
3389369992220,1cyclictest0-21swapper/621:25:106
338936999220,22cyclictest0-21swapper/620:10:006
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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