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2026-04-05 - 08:50

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 Sun Apr 05, 2026 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
65602230170,19sleep20-21swapper/219:09:452
62632230169,19sleep50-21swapper/519:05:305
63292221167,18sleep60-21swapper/619:06:266
62882219185,22sleep10-21swapper/119:05:491
65152214178,23sleep30-21swapper/319:09:053
64692213174,24sleep40-21swapper/419:08:264
64722207174,21sleep70-21swapper/719:08:287
65122200171,19sleep00-21swapper/019:09:010
695942450,1sleep1311rcuc/120:55:191
6815993129,1cyclictest0-21swapper/422:33:094
680699280,27cyclictest0-21swapper/120:20:111
6809992726,1cyclictest0-21swapper/221:45:002
680699270,27cyclictest0-21swapper/120:40:011
680699270,26cyclictest0-21swapper/100:24:591
6812992625,1cyclictest146118-21apt-get23:10:123
6809992624,1cyclictest117282-21apt-get22:20:122
6806992621,4cyclictest0-21swapper/121:55:001
680699260,25cyclictest191443-21apt00:30:001
682499250,25cyclictest151411-21munin-run23:20:007
681799250,24cyclictest140417-21apt-get23:00:135
6824992421,3cyclictest197179-21awk00:40:007
682299240,3cyclictest128300-21sleep22:40:006
6817992421,2cyclictest58902-21grep20:40:005
681599240,23cyclictest0-21swapper/400:00:124
680699240,2cyclictest102715-21apt-get21:55:111
680699240,22cyclictest0-21swapper/100:10:121
680699240,20cyclictest36479-21apt-get20:00:121
680699240,0cyclictest0-21swapper/121:25:001
6824992322,1cyclictest0-21swapper/721:50:017
682499230,1cyclictest0-21swapper/723:00:007
6822992323,0cyclictest0-21swapper/622:25:116
6817992323,0cyclictest0-21swapper/521:05:125
6817992320,2cyclictest102715-21apt-get21:55:105
681799230,3cyclictest59335-21apt-get20:40:115
6815992321,1cyclictest0-21swapper/422:10:024
681599230,1cyclictest136862-21munin-run22:54:594
681299231,1cyclictest0-21swapper/320:00:003
681299230,23cyclictest99446-21munin-run21:50:003
681299230,22cyclictest0-21swapper/320:00:133
680999230,23cyclictest0-21swapper/221:10:132
680999230,22cyclictest0-21swapper/220:00:122
6806992321,2cyclictest0-21swapper/120:05:141
680699230,22cyclictest0-21swapper/121:00:141
6802992322,1cyclictest0-21swapper/023:55:120
680299230,22cyclictest82458-21apt-get21:20:110
680299230,22cyclictest0-21swapper/022:25:120
6824992222,0cyclictest0-21swapper/723:10:127
682499220,22cyclictest136867-21perf22:55:007
682499220,21cyclictest0-21swapper/719:40:127
682499220,1cyclictest157139-21perf23:30:007
682499220,1cyclictest0-21swapper/721:35:017
6822992221,0cyclictest0-21swapper/623:25:126
6822992219,2cyclictest42180-21apt-get20:10:116
682299220,21cyclictest148969-21apt-get23:15:116
682299220,21cyclictest0-21swapper/619:20:116
682299220,1cyclictest97012-21apt-get21:45:126
682299220,1cyclictest0-21swapper/623:14:596
6817992220,1cyclictest36479-21apt-get20:00:135
6817992220,1cyclictest17637-21ntpq19:25:165
6817992220,1cyclictest125851-21apt-get22:35:125
6817992220,1cyclictest102290-21idleruntime-cro21:55:015
681799220,22cyclictest163278-21apt-get23:40:125
681799220,21cyclictest0-21swapper/522:15:125
681799220,21cyclictest0-21swapper/520:30:015
681799220,21cyclictest0-21swapper/500:25:115
681799220,1cyclictest122987-21apt-get22:30:125
6815992221,1cyclictest0-21swapper/420:25:134
681599220,21cyclictest27848-21apt-get19:45:104
681599220,21cyclictest0-21swapper/422:00:124
681599220,21cyclictest0-21swapper/421:55:114
681599220,21cyclictest0-21swapper/400:05:124
681599220,1cyclictest93473-21awk21:40:004
6812992220,1cyclictest120133-21apt-get22:25:113
681299220,22cyclictest0-21swapper/300:39:593
681299220,21cyclictest53612-21apt-get20:30:133
681299220,21cyclictest53612-21apt-get20:30:133
681299220,21cyclictest0-21swapper/323:35:113
681299220,21cyclictest0-21swapper/322:40:113
681299220,21cyclictest0-21swapper/320:25:133
681299220,21cyclictest0-21swapper/320:20:113
681299220,21cyclictest0-21swapper/319:30:133
681299220,1cyclictest0-21swapper/300:05:133
6809992219,3cyclictest93527-21systemd-run21:40:012
6809992219,3cyclictest0-21swapper/200:35:002
680999220,22cyclictest19272-21apt-get19:30:122
680999220,21cyclictest0-21swapper/222:40:102
6806992220,2cyclictest0-21swapper/123:35:121
6806992220,1cyclictest191873-21apt-get00:30:131
6806992220,1cyclictest175933-21ntpq00:00:171
680699220,21cyclictest0-21swapper/122:50:001
680699220,1cyclictest94160-21apt-get21:40:111
680699220,1cyclictest62189-21apt-get20:45:121
680699220,1cyclictest168566-21idleruntime-cro23:50:001
6802992221,1cyclictest0-21swapper/023:20:000
680299220,22cyclictest36047-21run-parts20:00:010
680299220,21cyclictest56464-21apt-get20:35:120
680299220,21cyclictest134429-21apt-get22:50:120
680299220,21cyclictest0-21swapper/023:50:140
680299220,21cyclictest0-21swapper/023:10:110
6824992120,1cyclictest0-21swapper/723:55:007
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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