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2026-03-06 - 12:56

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 Fri Mar 06, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28641212229175,42sleep50-21swapper/519:07:145
28643062227179,33sleep30-21swapper/319:09:523
28642962226189,24sleep20-21swapper/219:09:432
28641132223165,18sleep60-21swapper/619:07:076
28640022221163,19sleep10-21swapper/119:05:331
28641412217187,19sleep70-21swapper/719:07:327
28640792217180,24sleep40-21swapper/419:06:394
28642942211182,18sleep00-21swapper/019:09:420
29203062550,0sleep50-21swapper/520:45:135
286455899274,22cyclictest3014516-21apt-get23:30:016
2864550992720,3cyclictest0-21swapper/320:40:123
286455899263,2cyclictest0-21swapper/620:54:596
2864558992522,3cyclictest0-21swapper/622:30:136
286455899251,23cyclictest0-21swapper/623:35:126
286455799250,24cyclictest2873753-21awk19:24:595
286455099250,21cyclictest3038339-21apt-get00:10:113
286455099250,21cyclictest0-21swapper/321:00:113
286455099250,1cyclictest0-21swapper/323:40:003
286454799250,1cyclictest2985898-21sendmail22:40:002
2864543992521,3cyclictest3043672-21idleruntime-cro00:20:001
286454399250,24cyclictest2940373-21apt-get21:20:101
286455899241,1cyclictest0-21swapper/622:40:116
286455299240,24cyclictest2963051-21munin-run22:00:014
2864550992422,2cyclictest0-21swapper/321:10:123
2864550992420,4cyclictest2965925-21perf22:05:013
2864550992418,5cyclictest2868424-21apt-get19:15:133
286455099240,21cyclictest2894148-21apt-get20:00:113
286455099240,20cyclictest0-21swapper/319:10:123
286454399240,1cyclictest0-21swapper/122:05:001
286456299231,1cyclictest3009241-21apt-get23:20:137
286456299230,22cyclictest3038339-21apt-get00:10:107
286456299230,22cyclictest0-21swapper/723:05:017
2864558992321,1cyclictest0-21swapper/622:50:096
2864558992321,1cyclictest0-21swapper/621:25:016
286455899230,22cyclictest0-21swapper/621:05:146
286455899230,22cyclictest0-21swapper/620:49:596
286455899230,21cyclictest0-21swapper/620:30:146
286455799230,22cyclictest2985907-21basename22:40:015
286455799230,22cyclictest0-21swapper/520:40:005
2864552992322,1cyclictest3005960-21basename23:15:014
2864552992321,1cyclictest2943491-21apt-get21:25:144
286455299230,22cyclictest3000663-21apt-get23:05:114
2864550992321,2cyclictest0-21swapper/319:39:593
2864550992321,1cyclictest3035490-21apt-get00:05:133
2864550992321,1cyclictest3011667-21turbostat23:25:013
2864550992321,1cyclictest2980208-21sleep22:30:013
2864550992321,1cyclictest0-21swapper/322:25:013
2864550992320,3cyclictest0-21swapper/323:15:013
2864550992320,2cyclictest0-21swapper/321:40:113
286455099230,22cyclictest3023778-21apt-get23:45:133
286455099230,22cyclictest0-21swapper/321:45:113
286455099230,22cyclictest0-21swapper/319:55:123
286454799230,22cyclictest2968770-21munin-run22:10:012
286454799230,22cyclictest2968770-21munin-run22:10:012
286454799230,22cyclictest0-21swapper/221:00:112
2864543992321,1cyclictest0-21swapper/100:15:001
286454399230,22cyclictest3055563-21sh00:39:591
2864541992321,1cyclictest2902275-21turbostat20:14:590
286454199230,22cyclictest0-21swapper/019:35:120
2864562992221,0cyclictest0-21swapper/721:10:117
2864562992220,1cyclictest3008840-21sendmail-msp23:20:007
2864562992220,1cyclictest2894148-21apt-get20:00:127
2864562992220,1cyclictest0-21swapper/720:10:007
286456299220,22cyclictest0-21swapper/719:15:137
286456299220,21cyclictest0-21swapper/720:15:127
286456299220,21cyclictest0-21swapper/719:30:117
286456299220,21cyclictest0-21swapper/700:00:137
286456299220,1cyclictest3043814-21base6400:20:007
286456299220,1cyclictest0-21swapper/722:57:197
2864558992222,0cyclictest0-21swapper/623:55:026
2864558992221,1cyclictest0-21swapper/600:19:596
2864558992218,3cyclictest2905132-21turbostat20:19:596
286455899220,21cyclictest0-21swapper/623:40:116
286455899220,21cyclictest0-21swapper/621:45:116
286455899220,21cyclictest0-21swapper/621:25:146
286455899220,21cyclictest0-21swapper/621:10:116
286455899220,21cyclictest0-21swapper/620:40:126
286455899220,21cyclictest0-21swapper/619:20:136
286455899220,21cyclictest0-21swapper/619:10:136
286455899220,1cyclictest2910866-21awk20:30:006
2864557992220,1cyclictest3047180-21apt-get00:25:135
286455799220,21cyclictest0-21swapper/523:00:005
286455799220,21cyclictest0-21swapper/520:10:115
286455799220,1cyclictest3020497-21dump-pmu-power23:40:015
286455799220,1cyclictest2882299-21systemctl19:40:005
286455799220,0cyclictest0-21swapper/522:10:135
286455799220,0cyclictest0-21swapper/522:10:135
2864552992221,1cyclictest0-21swapper/420:40:124
2864552992219,2cyclictest646-21dbus-daemon23:40:014
286455299220,22cyclictest2873732-21munin-run19:25:004
286455299220,22cyclictest0-21swapper/420:50:004
286455299220,21cyclictest0-21swapper/419:45:124
2864550992220,1cyclictest0-21swapper/321:05:143
2864550992220,1cyclictest0-21swapper/300:25:133
286455099220,21cyclictest0-21swapper/319:30:103
286455099220,0cyclictest0-21swapper/320:50:123
2864547992221,1cyclictest0-21swapper/200:20:002
2864547992220,1cyclictest0-21swapper/221:20:012
286454799220,22cyclictest3029741-21apt-get23:55:122
286454799220,22cyclictest2928287-21sendmail-msp21:00:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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