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2024-07-27 - 03:31

OSADL QA Farm on Real-time of Mainline Linux

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

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 20 highest latencies:
System rack7slot7s.osadl.org (updated Sat Jul 27, 2024 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8277210476,9sleep10-21swapper/119:05:011
10295210175,9sleep30-21swapper/319:08:303
1020228564,6sleep20-21swapper/219:07:162
1036628270,8sleep00-21swapper/019:09:220
47562680,0sleep30-21swapper/323:44:013
317642440,0sleep10-21swapper/122:43:091
1049899411,20cyclictest2052-21ssh22:45:010
1049899390,20cyclictest0-21swapper/022:31:140
10498993815,3cyclictest0-21swapper/022:41:000
1050399310,0cyclictest0-21swapper/123:24:151
1049899294,20cyclictest1952-21irqstats22:25:210
1050899250,20cyclictest0-21swapper/321:45:103
10508992421,2cyclictest39-21ksoftirqd/323:15:073
1049899244,18cyclictest25740-21cron22:39:590
1050899230,1cyclictest0-21swapper/300:09:293
1049899236,7cyclictest141rcu_preempt19:15:000
1049899232,19cyclictest26714-21grep19:40:270
1049899231,20cyclictest7744-21snmpd19:32:000
10508992219,2cyclictest39-21ksoftirqd/322:20:003
10498992219,1cyclictest0-21swapper/019:45:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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