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2026-06-21 - 21:14

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 Jun 21, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4723002249180,57sleep40-21swapper/407:09:454
4720162237167,23sleep10-21swapper/107:05:391
4719932237170,55sleep50-21swapper/507:05:285
4721922220161,19sleep20-21swapper/207:08:132
4721142219179,25sleep70-21swapper/707:07:077
4720452218187,20sleep30-21swapper/307:06:063
4720152215182,22sleep00-21swapper/007:05:390
4722552214175,25sleep60-21swapper/607:09:076
47253199270,5cyclictest644373-21perf12:00:004
47253699263,22cyclictest552878-21munin-plugin-st09:25:016
47252599260,25cyclictest552883-21munin-run09:25:012
472537992523,1cyclictest0-21swapper/711:40:007
472527992520,4cyclictest475389-21basename07:15:003
47252299250,24cyclictest0-21swapper/111:55:101
47253799240,24cyclictest529260-21apt-get08:45:047
47253799240,23cyclictest618258-21apt-get11:15:137
472536992422,1cyclictest0-21swapper/607:35:006
47253699240,3cyclictest604762-21ntpq10:50:176
47253699240,23cyclictest502728-21perf08:00:006
47253399240,23cyclictest0-21swapper/507:25:105
47253199240,23cyclictest0-21swapper/411:00:004
47252799242,0cyclictest0-21swapper/307:45:173
47252799240,23cyclictest502712-21apt08:00:003
47252799240,23cyclictest0-21swapper/308:20:123
47252799240,1cyclictest541518-21apt-get09:05:123
47252599240,23cyclictest544033-21munin-run09:10:012
47252599240,23cyclictest0-21swapper/208:20:202
47252599240,23cyclictest0-21swapper/207:35:122
472520992423,1cyclictest665462-21apt-get12:35:120
47252099240,24cyclictest514493-21cron08:20:000
47252099240,24cyclictest0-21swapper/010:20:110
47252099240,23cyclictest549959-21sendmail09:20:010
472537992322,1cyclictest567620-21apt-get09:50:037
472537992322,1cyclictest0-21swapper/708:15:007
472537992321,2cyclictest608953-21apt-get11:00:027
472537992321,1cyclictest633020-21apt-get11:40:097
472537992321,1cyclictest514962-21apt-get08:20:127
472537992319,3cyclictest538166-21awk08:59:597
472537992319,3cyclictest538166-21awk08:59:597
47253799230,22cyclictest546974-21munin-run09:15:017
47253799230,1cyclictest615316-21apt-get11:10:117
47253799230,0cyclictest0-21swapper/712:00:117
47253399239,14cyclictest0-21swapper/510:24:555
472533992323,0cyclictest0-21swapper/511:15:125
472533992321,1cyclictest644807-21apt-get12:00:115
47253399230,22cyclictest529269-21grep08:44:595
47253399230,22cyclictest0-21swapper/512:25:125
472531992322,1cyclictest585777-21apt-get10:20:114
47253199230,23cyclictest0-21swapper/409:15:184
47253199230,22cyclictest0-21swapper/409:10:114
47253199230,22cyclictest0-21swapper/408:55:124
47253199230,22cyclictest0-21swapper/408:55:124
472527992321,1cyclictest0-21swapper/310:05:223
472527992318,1cyclictest211rcu_preempt11:35:123
47252799230,22cyclictest0-21swapper/311:15:133
47252799230,22cyclictest0-21swapper/310:25:103
47252799230,22cyclictest0-21swapper/309:45:143
47252799230,22cyclictest0-21swapper/308:45:023
47252799230,1cyclictest561729-21munin-run09:40:013
47252599230,22cyclictest0-21swapper/212:04:592
47252599230,22cyclictest0-21swapper/210:50:102
47252599230,22cyclictest0-21swapper/208:45:112
47252599230,22cyclictest0-21swapper/207:40:112
47252599230,22cyclictest0-21swapper/207:30:132
47252599230,1cyclictest0-21swapper/210:05:152
472522992323,0cyclictest0-21swapper/107:45:101
472522992322,1cyclictest520847-21apt-get08:30:131
47252299230,22cyclictest656596-21apt-get12:20:121
47252299230,22cyclictest579875-21apt-get10:10:141
47252299230,22cyclictest488359-21apt-get07:35:121
47252299230,22cyclictest0-21swapper/112:00:101
47252099230,22cyclictest0-21swapper/012:20:120
47252099230,22cyclictest0-21swapper/010:35:130
47252099230,1cyclictest0-21swapper/009:20:100
472537992222,0cyclictest0-21swapper/708:25:117
472537992222,0cyclictest0-21swapper/707:35:207
472537992221,1cyclictest511996-21apt-get08:15:137
472537992221,1cyclictest0-21swapper/707:55:117
472537992220,1cyclictest0-21swapper/708:00:137
47253799220,22cyclictest659111-21munin-run12:25:007
47253799220,22cyclictest626695-21munin-run11:30:007
47253799220,22cyclictest526753-21apt-get08:40:127
47253799220,22cyclictest0-21swapper/711:50:127
47253799220,22cyclictest0-21swapper/708:05:147
47253799220,21cyclictest585359-21basename10:20:017
47253799220,21cyclictest496864-21appstreamcli07:50:037
47253799220,21cyclictest0-21swapper/712:35:127
47253799220,21cyclictest0-21swapper/711:30:117
47253799220,21cyclictest0-21swapper/707:20:137
472536992222,0cyclictest0-21swapper/609:00:146
472536992222,0cyclictest0-21swapper/609:00:136
472536992222,0cyclictest0-21swapper/608:45:036
472536992221,1cyclictest556251-21apt-get09:30:136
47253699220,22cyclictest0-21swapper/608:20:126
47253699220,21cyclictest638905-21apt-get11:50:126
47253699220,21cyclictest621232-21apt-get11:20:126
47253699220,21cyclictest576936-21apt-get10:05:156
47253699220,21cyclictest567694-21appstreamcli09:50:026
47253699220,21cyclictest509042-21apt-get08:10:116
47253699220,21cyclictest496791-21apt-get07:50:026
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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