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2026-04-07 - 13:40

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 Apr 07, 2026 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17841972232173,19sleep60-21swapper/619:08:376
17840152221167,17sleep40-21swapper/419:06:024
17841962219164,17sleep50-21swapper/519:08:365
17841912218165,17sleep00-21swapper/019:08:320
17839872214163,39sleep30-21swapper/319:05:373
17841512213181,21sleep70-21swapper/719:07:587
17839852206172,22sleep10-21swapper/119:05:351
17842772205175,18sleep20-21swapper/219:09:462
1784530992523,1cyclictest1857040-21sh21:15:004
178452599250,25cyclictest1857041-21sh21:15:002
1784521992523,1cyclictest1960455-21awk00:15:001
1784538992421,2cyclictest1813690-21munin-run20:00:017
1784536992421,2cyclictest1951904-21munin-run00:00:016
178453699240,23cyclictest1922749-21apt-get23:10:006
178453299240,23cyclictest0-21swapper/520:35:125
178452799240,24cyclictest0-21swapper/323:24:593
1784525992424,0cyclictest0-21swapper/219:20:112
178452199240,23cyclictest1931601-21awk23:25:001
1784517992422,2cyclictest1955154-21apt-get00:05:110
1784517992421,2cyclictest1819424-21idleruntime-cro20:10:010
178451799240,23cyclictest0-21swapper/000:15:110
1784538992323,0cyclictest0-21swapper/720:15:107
1784538992321,1cyclictest1851086-21apt-get21:05:017
1784538992321,1cyclictest0-21swapper/721:15:127
178453899230,22cyclictest0-21swapper/722:30:127
178453899230,22cyclictest0-21swapper/720:25:007
178453699230,23cyclictest1825092-21cron20:20:016
178453699230,22cyclictest1802267-21awk19:40:016
178453699230,22cyclictest0-21swapper/621:45:106
178453699230,22cyclictest0-21swapper/621:30:116
178453699230,1cyclictest1863198-21apt-get21:25:126
178453299230,22cyclictest0-21swapper/523:05:185
1784530992322,1cyclictest646-21dbus-daemon23:40:004
178452799230,22cyclictest1813690-21munin-run20:00:013
178452799230,22cyclictest0-21swapper/322:00:123
1784525992321,1cyclictest1866048-21apt-get21:30:112
178452599230,23cyclictest1940166-21awk23:39:592
178452599230,23cyclictest0-21swapper/219:15:112
178452599230,22cyclictest0-21swapper/219:40:112
178452599230,1cyclictest1881574-21ntpq21:55:182
1784521992321,1cyclictest0-21swapper/122:35:121
178452199230,22cyclictest1796978-21apt-get19:30:121
178452199230,22cyclictest0-21swapper/100:35:111
178452199230,1cyclictest0-21swapper/122:55:001
178452199230,1cyclictest0-21swapper/120:20:001
1784517992322,1cyclictest1871351-21awk21:39:590
1784517992321,1cyclictest0-21swapper/023:10:100
178451799231,21cyclictest0-21swapper/021:55:130
178451799230,22cyclictest0-21swapper/000:25:120
178453899229,0cyclictest0-21swapper/720:35:037
1784538992221,0cyclictest0-21swapper/723:35:127
1784538992221,0cyclictest0-21swapper/719:50:117
1784538992220,1cyclictest0-21swapper/721:35:087
1784538992219,2cyclictest1796578-21awk19:30:007
178453899220,21cyclictest1932013-21apt-get23:25:137
178453899220,21cyclictest1906047-21apt-get22:40:117
178453899220,21cyclictest1848664-21apt-get21:00:147
178453899220,21cyclictest0-21swapper/723:05:127
178453899220,21cyclictest0-21swapper/722:25:117
178453899220,21cyclictest0-21swapper/721:50:127
178453899220,21cyclictest0-21swapper/721:20:157
178453899220,21cyclictest0-21swapper/720:55:117
178453899220,1cyclictest1894625-21apt-get22:20:127
178453899220,1cyclictest0-21swapper/721:10:117
178453899220,1cyclictest0-21swapper/700:15:007
178453899220,0cyclictest0-21swapper/722:35:127
1784536992222,0cyclictest0-21swapper/622:30:136
1784536992220,1cyclictest1905609-21sendmail22:40:006
1784536992219,2cyclictest1859914-21basename21:19:596
178453699220,21cyclictest0-21swapper/623:20:116
178453699220,21cyclictest0-21swapper/623:00:126
178453699220,21cyclictest0-21swapper/621:20:146
178453699220,21cyclictest0-21swapper/620:25:116
178453699220,21cyclictest0-21swapper/600:35:106
178453699220,1cyclictest0-21swapper/623:50:006
178453699220,1cyclictest0-21swapper/619:50:016
1784532992221,1cyclictest1830845-21awk20:30:005
178453299220,22cyclictest1894201-21awk22:20:005
178453299220,22cyclictest1807991-21perf19:50:015
178453299220,21cyclictest1822675-21apt-get20:15:125
178453299220,1cyclictest1882799-21sendmail-msp22:00:005
178453299220,0cyclictest0-21swapper/523:55:125
178453299220,0cyclictest0-21swapper/523:25:135
1784530992221,1cyclictest1940589-21apt-get23:40:124
178453099220,21cyclictest0-21swapper/421:00:124
178453099220,21cyclictest0-21swapper/420:40:114
178453099220,0cyclictest0-21swapper/421:40:134
1784527992222,0cyclictest0-21swapper/300:25:003
1784527992221,1cyclictest1905612-21munin-run22:39:593
1784527992219,2cyclictest363-21systemd-journal19:45:003
178452799220,21cyclictest0-21swapper/320:00:133
178452799220,21cyclictest0-21swapper/300:35:113
178452799220,21cyclictest0-21swapper/300:00:113
178452799220,1cyclictest1854621-21apt-get21:10:113
1784525992222,0cyclictest0-21swapper/222:25:122
1784525992221,1cyclictest0-21swapper/223:30:122
1784525992220,2cyclictest1922906-21cat23:10:002
178452599220,22cyclictest1871776-21apt-get21:40:132
178452599220,22cyclictest1845132-21basename20:55:012
178452599220,22cyclictest0-21swapper/223:55:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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