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2024-10-09 - 02:26

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 Tue Oct 08, 2024 12:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
711321140,1sleep125-21ksoftirqd/112:28:351
23572210678,9sleep30-21swapper/307:06:533
22575210278,18sleep10-21swapper/107:05:191
2370628868,8sleep00-21swapper/007:08:390
2378428467,13sleep20-21swapper/207:09:382
2389499260,26cyclictest0-21swapper/210:57:082
2389499251,24cyclictest0-21swapper/209:19:472
2389099250,24cyclictest0-21swapper/109:40:131
2388999250,25cyclictest0-21swapper/010:57:070
2389499240,24cyclictest0-21swapper/210:46:202
2388999240,23cyclictest0-21swapper/009:19:470
23900992319,3cyclictest39-21ksoftirqd/311:10:223
23889992322,1cyclictest0-21swapper/011:41:010
2388999230,3cyclictest0-21swapper/010:24:020
2388999230,23cyclictest0-21swapper/010:46:200
23889992219,2cyclictest22056-21ssh11:30:140
2390099217,6cyclictest39-21ksoftirqd/310:50:313
2390099215,11cyclictest141rcu_preempt11:47:523
2390099211,1cyclictest141rcu_preempt07:15:163
2389499210,3cyclictest0-21swapper/211:42:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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