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2025-11-09 - 17:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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: 50 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 20 highest latencies:
System rack9slot8s.osadl.org (updated Sun Nov 09, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501930,0irq/46-4a10000016099-21kworker/0:107:09:320
185999911943,0cyclictest81850irq/46-4a10000010:35:470
185999911630,0cyclictest6840-21ssh09:14:450
185999911546,0cyclictest81850irq/46-4a10000010:14:580
185999911428,0cyclictest6343-21sh11:30:040
185999911332,0cyclictest3977-21runrttasks09:05:260
185999911230,0cyclictest26527-21ssh09:56:040
185999911230,0cyclictest24896-21ssh12:09:590
185999911228,0cyclictest15550-21cron11:49:590
185999911225,0cyclictest22921-21ssh10:56:380
185999911129,0cyclictest32203-21ssh11:16:160
185999911125,0cyclictest18795-21kworker/u2:410:19:590
185999911042,0cyclictest81850irq/46-4a10000007:29:500
185999911027,0cyclictest24759-21sshd09:52:230
185999910928,0cyclictest7372-21ssh09:15:400
185999910927,0cyclictest30864-21munin-run08:29:540
185999910927,0cyclictest18666-21ssh09:39:380
185999910920,0cyclictest4998-21ssh11:27:170
185999910911,0cyclictest16010-21ssh11:50:460
185999910829,0cyclictest15363-21rm10:40:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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