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2025-11-09 - 05:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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.

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 50 highest latencies:
System rack7slot3s.osadl.org (updated Sun Nov 09, 2025 00:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3161199937,79cyclictest0-21swapper/019:15:430
91192810,2sleep20-21swapper/221:51:142
315282770,2sleep30-21swapper/300:34:343
3161199766,64cyclictest0-21swapper/000:00:430
292542750,3sleep029240-21ssh00:30:480
162752750,2sleep00-21swapper/019:55:550
3161199695,19cyclictest8050irq/56-dwc_otg_19:40:430
3161199695,19cyclictest8050irq/56-dwc_otg_19:40:430
3161199694,7cyclictest0-21swapper/019:10:320
31611996939,15cyclictest13-21rcuc/022:10:300
31611996922,28cyclictest1111-21runrttasks21:15:290
3161199671,33cyclictest0-21swapper/000:05:410
3161199661,51cyclictest19447-21cron22:50:300
3161199661,51cyclictest19447-21cron22:50:300
3161299652,9cyclictest0-21swapper/123:10:441
31612996314,12cyclictest11398-21ssh21:55:401
3161199631,49cyclictest0-21swapper/021:50:290
3161199631,26cyclictest25989-21cron22:15:290
31612996210,25cyclictest0-21swapper/121:05:351
3161199621,43cyclictest22439-21idleruntime-cro20:15:290
3161199615,19cyclictest0-21swapper/019:30:460
3161199607,14cyclictest0-21swapper/021:40:450
31611996034,16cyclictest24758-21cut20:20:480
31611996033,7cyclictest7950irq/56-dwc_otg_21:05:300
31611996032,7cyclictest7850irq/56-dwc_otg22:25:300
31611996029,15cyclictest7850irq/56-dwc_otg22:05:300
3161199602,51cyclictest28600-21kworker/0:221:52:150
31611996014,43cyclictest21248-21cron21:25:290
3161499573,9cyclictest8050irq/56-dwc_otg_22:25:433
3161299579,9cyclictest7850irq/56-dwc_otg00:10:451
31611995734,5cyclictest7850irq/56-dwc_otg22:30:290
3161199571,33cyclictest0-21swapper/021:35:590
323842560,4sleep2301ktimersoftd/223:06:192
31611995638,4cyclictest29651-21kworker/u8:022:20:290
31611995633,3cyclictest30579-21modprobe23:05:290
31611995626,4cyclictest0-21swapper/023:45:510
31611995626,4cyclictest0-21swapper/023:45:510
31611995615,18cyclictest24816-21/usr/sbin/munin22:55:590
3161199561,4cyclictest28687-21modprobe21:35:290
3161199556,36cyclictest9-21ksoftirqd/020:42:130
31611995525,19cyclictest0-21swapper/022:55:300
31611995430,6cyclictest7950irq/56-dwc_otg_22:35:290
31611995428,14cyclictest7850irq/56-dwc_otg23:11:010
3161199542,45cyclictest10236-21kworker/0:122:00:260
3161199541,42cyclictest0-21swapper/022:41:480
3161199541,37cyclictest335-21wget23:50:460
3161199541,29cyclictest11948-21idleruntime-cro22:40:290
3161199541,27cyclictest10201-21fschecks_time23:20:480
310412543,7sleep10-21swapper/119:06:481
310412543,7sleep10-21swapper/119:06:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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