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2025-12-23 - 06:33

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 Tue Dec 23, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7498932253179,24sleep10-21swapper/119:09:481
7498792236171,51sleep50-21swapper/519:09:365
7496842224191,21sleep00-21swapper/019:06:500
7498322221169,17sleep60-21swapper/619:08:576
7498112218185,21sleep30-21swapper/319:08:393
7497632214181,21sleep20-21swapper/219:07:572
7496232214166,36sleep40-21swapper/419:05:574
7497502212184,18sleep70-21swapper/719:07:457
750325993125,5cyclictest0-21swapper/719:40:017
75030999283,22cyclictest779837-21sendmail20:00:002
75030999283,22cyclictest779837-21sendmail20:00:002
750325992720,3cyclictest789095-21apt-get20:15:137
75030199270,21cyclictest871804-21apt-get22:40:000
750309992624,2cyclictest0-21swapper/223:20:142
750309992622,3cyclictest0-21swapper/200:20:002
750317992522,2cyclictest0-21swapper/519:40:005
75030999250,22cyclictest0-21swapper/219:15:122
750325992422,1cyclictest829126-21apt-get21:25:137
75032599240,23cyclictest875374-21apt-get22:45:177
75031599240,23cyclictest0-21swapper/400:15:144
75031599240,1cyclictest0-21swapper/420:45:134
750313992422,1cyclictest920035-21ntpq00:00:203
750309992421,2cyclictest0-21swapper/221:15:132
750309992420,4cyclictest0-21swapper/220:15:122
75030999240,23cyclictest762702-21munin-run19:30:002
75030799240,3cyclictest894938-21sendmail23:20:011
750301992420,4cyclictest768418-21perf19:40:000
750325992321,1cyclictest808692-21perf20:50:007
750325992321,1cyclictest783131-21apt-get20:05:137
75032599230,22cyclictest0-21swapper/720:30:127
75032599230,22cyclictest0-21swapper/719:15:137
75032199230,22cyclictest929792-21systemctl00:20:006
75032199230,22cyclictest0-21swapper/619:30:136
75032199230,0cyclictest0-21swapper/623:45:126
750317992321,2cyclictest791541-21systemctl20:20:005
75031799230,22cyclictest0-21swapper/500:30:015
75031599230,22cyclictest0-21swapper/420:40:124
75031599230,22cyclictest0-21swapper/419:35:144
75031599230,1cyclictest756705-21apt-get19:20:024
75031599230,1cyclictest0-21swapper/422:15:004
75031399230,23cyclictest791547-21awk20:20:003
75031399230,22cyclictest941780-21munin-run00:40:013
75031399230,22cyclictest941780-21munin-run00:40:003
75031399230,22cyclictest834830-21apt-get21:35:113
750309992321,2cyclictest0-21swapper/219:40:102
750309992321,1cyclictest800530-21apt-get20:35:122
75030999230,22cyclictest0-21swapper/220:50:152
75030999230,22cyclictest0-21swapper/219:35:152
750307992322,1cyclictest857685-21apt-get22:15:121
750307992322,1cyclictest0-21swapper/100:20:131
750307992322,1cyclictest0-21swapper/100:15:001
750307992322,0cyclictest0-21swapper/100:25:021
75030799230,22cyclictest0-21swapper/119:20:011
75030199230,22cyclictest883548-21sendmail-msp22:59:590
75030199230,22cyclictest0-21swapper/000:35:010
75030199230,22cyclictest0-21swapper/000:00:010
750325992220,1cyclictest0-21swapper/723:45:117
75032599220,21cyclictest883949-21apt-get23:00:137
75032599220,21cyclictest0-21swapper/720:10:137
75032599220,21cyclictest0-21swapper/720:00:137
75032599220,1cyclictest860111-21apt-get22:20:017
750321992222,0cyclictest0-21swapper/623:15:006
750321992221,1cyclictest936442-21apt-get00:30:136
750321992220,1cyclictest878221-21apt-get22:50:136
75032199220,22cyclictest0-21swapper/619:40:006
75032199220,21cyclictest0-21swapper/623:15:156
75032199220,21cyclictest0-21swapper/621:30:136
75032199220,21cyclictest0-21swapper/620:55:146
75032199220,21cyclictest0-21swapper/600:00:146
75031799220,22cyclictest0-21swapper/523:20:005
75031799220,22cyclictest0-21swapper/519:40:115
75031799220,21cyclictest846258-21apt-get21:55:125
75031799220,21cyclictest817284-21awk21:05:005
75031799220,21cyclictest0-21swapper/523:55:015
75031799220,21cyclictest0-21swapper/522:20:145
75031799220,21cyclictest0-21swapper/522:00:145
75031799220,21cyclictest0-21swapper/521:45:125
75031799220,21cyclictest0-21swapper/520:45:125
75031799220,21cyclictest0-21swapper/519:20:145
750315992221,1cyclictest0-21swapper/423:05:014
750315992220,1cyclictest915210-21awk23:55:014
750315992220,1cyclictest900642-21cron23:30:004
75031599220,21cyclictest909233-21apt-get23:45:004
75031599220,21cyclictest753143-21perf19:15:004
75031599220,21cyclictest0-21swapper/422:15:114
75031599220,21cyclictest0-21swapper/419:55:144
75031599220,21cyclictest0-21swapper/419:55:144
75031599220,21cyclictest0-21swapper/400:30:124
75031599220,0cyclictest0-21swapper/420:20:124
75031599220,0cyclictest0-21swapper/400:20:134
750313992222,0cyclictest0-21swapper/323:50:133
750313992220,1cyclictest0-21swapper/321:20:013
75031399220,22cyclictest935805-21apt-config00:30:003
75031399220,22cyclictest802980-21awk20:40:003
75031399220,21cyclictest0-21swapper/323:10:143
75031399220,21cyclictest0-21swapper/300:30:013
75031399220,1cyclictest840142-21perf21:45:013
750309992221,1cyclictest0-21swapper/223:40:142
750309992220,1cyclictest918790-21apt-get00:00:152
750309992219,3cyclictest0-21swapper/222:15:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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