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2025-10-30 - 16:29

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 Thu Oct 30, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31517422230166,22sleep30-21swapper/307:05:473
31517822217185,21sleep50-21swapper/507:06:215
31519042216160,17sleep60-21swapper/607:08:086
31519982213156,19sleep70-21swapper/707:09:307
31518892211178,21sleep20-21swapper/207:07:562
31520042209175,21sleep40-21swapper/407:09:344
31519542207174,22sleep10-21swapper/107:08:521
31519532207175,21sleep00-21swapper/007:08:510
31997532560,1sleep43199758-21cut08:30:124
3152288992612,8cyclictest0-21swapper/512:19:235
315228399250,23cyclictest0-21swapper/308:05:143
315229099240,23cyclictest3158566-21cron07:20:016
3152288992422,1cyclictest3291323-21apt-get11:10:135
3152288992422,1cyclictest3291323-21apt-get11:10:135
3152288992421,2cyclictest3262741-21apt-get10:20:135
3152288992421,2cyclictest3161879-21apt-get07:25:135
315228899240,21cyclictest0-21swapper/512:00:135
315228599240,23cyclictest0-21swapper/409:14:594
3152276992424,0cyclictest0-21swapper/109:20:111
315227699240,22cyclictest3291323-21apt-get11:10:121
315227699240,22cyclictest3291323-21apt-get11:10:121
315227499240,23cyclictest3155019-21awk07:15:010
3152293992321,1cyclictest3233451-21apt-get09:29:597
3152293992321,1cyclictest0-21swapper/709:15:007
315229399230,2cyclictest3233451-21apt-get09:30:017
315229399230,23cyclictest3196728-21apt-get08:25:137
315229399230,23cyclictest0-21swapper/709:20:007
315229399230,22cyclictest0-21swapper/712:35:147
315229399230,22cyclictest0-21swapper/711:55:117
315229399230,22cyclictest0-21swapper/711:15:017
315229399230,22cyclictest0-21swapper/711:15:007
3152290992321,1cyclictest3199586-21apt-get08:30:136
315229099230,22cyclictest3154988-21cron07:15:016
315229099230,22cyclictest0-21swapper/609:05:126
315229099230,1cyclictest0-21swapper/609:20:006
3152288992322,1cyclictest0-21swapper/512:25:015
3152288992320,3cyclictest0-21swapper/511:25:135
315228899230,22cyclictest3239433-21munin-run09:39:595
315228899230,22cyclictest0-21swapper/512:40:005
315228899230,1cyclictest0-21swapper/507:30:125
3152285992322,1cyclictest3245576-21apt-get09:50:134
315228599230,22cyclictest0-21swapper/407:45:124
3152283992321,1cyclictest0-21swapper/308:45:143
315228399230,23cyclictest3239421-21turbostat.cron09:40:003
315228399230,22cyclictest0-21swapper/310:20:133
315228399230,22cyclictest0-21swapper/309:40:123
3152279992321,1cyclictest3230606-21munin-run09:24:592
315227999230,22cyclictest3208164-21apt-get08:45:142
315227999230,22cyclictest3204872-21munin-run08:39:592
315227999230,22cyclictest3158588-21munin-run07:20:002
3152276992321,1cyclictest3311603-21apt-get11:45:151
315227699230,23cyclictest3210595-21munin-run08:50:001
315227699230,22cyclictest0-21swapper/109:45:121
315227699230,22cyclictest0-21swapper/108:30:011
315227699230,22cyclictest0-21swapper/108:15:121
315227699230,21cyclictest0-21swapper/108:55:131
3152274992322,1cyclictest0-21swapper/010:04:590
3152274992321,1cyclictest3308318-21systemctl11:40:000
3152274992321,1cyclictest3265169-21idleruntime-cro10:25:000
3152274992321,1cyclictest3213868-21apt-get08:55:130
3152274992321,1cyclictest0-21swapper/012:25:010
315227499230,22cyclictest0-21swapper/010:30:000
315227499230,22cyclictest0-21swapper/010:10:120
315227499230,22cyclictest0-21swapper/008:00:130
3152293992220,1cyclictest3337586-21apt-get12:30:127
315229399220,21cyclictest3302760-21apt-get11:30:147
315229399220,21cyclictest0-21swapper/711:45:167
315229399220,21cyclictest0-21swapper/708:55:137
315229399220,21cyclictest0-21swapper/708:35:137
315229399220,21cyclictest0-21swapper/707:45:117
315229399220,21cyclictest0-21swapper/707:30:017
315229399220,21cyclictest0-21swapper/707:20:007
3152290992221,1cyclictest0-21swapper/608:40:126
315229099220,21cyclictest3317305-21apt-get11:55:126
315229099220,21cyclictest3257008-21apt-get10:10:126
315229099220,21cyclictest3222451-21apt-get09:10:156
315229099220,1cyclictest0-21swapper/607:45:116
315229099220,0cyclictest3190736-21apt-get08:15:126
315229099220,0cyclictest0-21swapper/612:35:146
3152288992220,1cyclictest3305191-21munin-run11:35:015
3152288992220,1cyclictest3193215-21basename08:20:015
3152288992220,1cyclictest0-21swapper/507:50:015
3152288992219,2cyclictest3184595-21cron08:05:005
3152288992219,2cyclictest0-21swapper/510:50:115
3152288992218,3cyclictest0-21swapper/508:35:145
315228899220,21cyclictest3277031-21apt-get10:45:125
315228899220,21cyclictest0-21swapper/508:49:595
315228899220,1cyclictest3159029-21apt-get07:20:125
315228899220,1cyclictest0-21swapper/509:49:595
315228899220,1cyclictest0-21swapper/507:15:135
315228899220,0cyclictest0-21swapper/509:40:125
315228899220,0cyclictest0-21swapper/508:30:135
315228599220,21cyclictest0-21swapper/412:25:014
315228599220,21cyclictest0-21swapper/411:50:134
315228599220,21cyclictest0-21swapper/410:55:104
315228599220,1cyclictest3211018-21apt-get08:50:124
315228599220,1cyclictest0-21swapper/412:00:134
315228599220,0cyclictest0-21swapper/409:30:134
3152283992222,0cyclictest0-21swapper/311:15:123
3152283992222,0cyclictest0-21swapper/311:15:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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