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2025-12-09 - 10:18

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 Tue Dec 09, 2025 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2654932235180,18sleep00-21swapper/019:07:340
2654202221183,25sleep60-21swapper/619:06:366
2655782217180,24sleep10-21swapper/119:08:481
2632102217184,21sleep20-21swapper/219:05:032
2655752216178,24sleep70-21swapper/719:08:467
2654182212179,22sleep40-21swapper/419:06:344
2654982208180,18sleep50-21swapper/519:07:395
2655712207174,21sleep30-21swapper/319:08:413
26589999260,1cyclictest275500-21apt-get19:25:126
26589499260,22cyclictest283645-21munin-run19:40:004
26589499260,20cyclictest0-21swapper/400:10:124
26588899260,2cyclictest272240-21sendmail19:20:002
265886992620,5cyclictest399647-21awk23:00:001
265881992624,1cyclictest0-21swapper/021:35:150
265903992521,3cyclictest368077-21apt22:05:127
265899992524,1cyclictest4210822sleep623:35:176
265899992524,1cyclictest0-21swapper/623:00:016
265899992523,1cyclictest385064-21munin-run22:35:016
265899992523,1cyclictest336583-21apt-get21:10:156
26589999250,0cyclictest0-21swapper/623:05:126
26589499250,24cyclictest0-21swapper/423:30:134
265888992521,3cyclictest364725-21idleruntime-cro22:00:012
26588699250,24cyclictest0-21swapper/123:25:001
26590399240,2cyclictest334972-21ntpq21:05:197
26589999240,23cyclictest0-21swapper/600:35:136
26589999240,0cyclictest0-21swapper/621:15:146
26589999240,0cyclictest0-21swapper/621:15:146
265894992420,3cyclictest0-21swapper/422:05:124
26589499240,23cyclictest434379-21apt-get00:00:134
26589499240,21cyclictest0-21swapper/422:55:154
26589299240,23cyclictest0-21swapper/300:35:133
26589299240,23cyclictest0-21swapper/300:20:133
26588899240,23cyclictest416777-21munin-run23:30:002
26588699240,23cyclictest442938-21apt-get00:15:141
26588699240,23cyclictest301585-21cut20:10:001
26588699240,23cyclictest0-21swapper/120:15:121
26588199240,23cyclictest275093-21awk19:25:000
26590399230,22cyclictest650-21dbus-daemon19:39:597
26590399230,22cyclictest286787-21awk19:45:007
26590399230,22cyclictest0-21swapper/720:15:127
26590399230,22cyclictest0-21swapper/719:55:007
26590399230,22cyclictest0-21swapper/700:20:137
265899992321,1cyclictest0-21swapper/619:40:126
26589999230,23cyclictest0-21swapper/619:20:006
26589999230,22cyclictest0-21swapper/620:20:006
26589799230,22cyclictest0-21swapper/520:05:145
265894992321,1cyclictest307288-21turbostat20:19:594
265894992320,3cyclictest0-21swapper/420:30:124
26589499230,22cyclictest0-21swapper/423:05:144
26589499230,1cyclictest298722-21dump-pmu-power20:05:004
26589499230,0cyclictest0-21swapper/420:25:144
265892992321,1cyclictest0-21swapper/322:05:123
26589299230,23cyclictest0-21swapper/319:45:003
26589299230,22cyclictest420049-21apt-get23:35:123
26589299230,22cyclictest292476-21apt-get19:54:593
26589299230,22cyclictest272649-21apt-get19:20:123
26589299230,22cyclictest0-21swapper/323:40:133
26589299230,22cyclictest0-21swapper/322:00:113
26589299230,22cyclictest0-21swapper/320:25:143
265888992323,0cyclictest0-21swapper/221:15:142
265888992323,0cyclictest0-21swapper/221:15:132
265888992322,1cyclictest0-21swapper/220:20:002
265888992321,1cyclictest0-21swapper/219:25:002
26588899230,2cyclictest385064-21munin-run22:35:002
26588899230,22cyclictest397178-21apt-get22:55:152
26588899230,22cyclictest0-21swapper/223:05:142
26588899230,22cyclictest0-21swapper/220:55:172
26588899230,1cyclictest330865-21apt-get21:00:142
26588699230,23cyclictest0-21swapper/122:25:131
26588699230,22cyclictest0-21swapper/100:05:181
26588699230,1cyclictest0-21swapper/122:15:131
265881992322,1cyclictest454374-21apt-get00:35:130
265881992321,1cyclictest434379-21apt-get00:00:120
26588199230,22cyclictest283645-21munin-run19:40:000
26588199230,22cyclictest0-21swapper/023:20:000
26588199230,22cyclictest0-21swapper/022:15:130
26588199230,22cyclictest0-21swapper/022:10:130
26588199230,22cyclictest0-21swapper/020:40:130
26588199230,22cyclictest0-21swapper/020:05:000
26588199230,1cyclictest0-21swapper/000:30:140
265903992221,1cyclictest0-21swapper/719:45:127
26590399220,22cyclictest0-21swapper/700:35:137
26590399220,21cyclictest0-21swapper/723:40:137
26590399220,21cyclictest0-21swapper/723:35:127
26590399220,21cyclictest0-21swapper/722:00:127
26590399220,21cyclictest0-21swapper/721:10:157
26590399220,21cyclictest0-21swapper/720:25:147
26590399220,21cyclictest0-21swapper/719:25:127
26590399220,21cyclictest0-21swapper/719:20:127
265899992219,2cyclictest0-21swapper/623:55:136
265899992219,2cyclictest0-21swapper/621:35:146
265899992219,2cyclictest0-21swapper/620:45:146
265899992216,5cyclictest283665-21plymouth19:40:006
265899992214,7cyclictest0-21swapper/623:45:186
26589999220,21cyclictest408613-21apt-get23:15:146
26589999220,21cyclictest0-21swapper/619:30:146
26589999220,0cyclictest0-21swapper/600:10:146
265897992222,0cyclictest0-21swapper/519:55:135
265897992220,1cyclictest448669-21apt-get00:25:145
26589799220,22cyclictest367665-21perf22:05:015
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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