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2022-12-04 - 23:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #5

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 
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x86 Intel Celeron G5905 @3500 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of shadow in rack #9, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 rack9slot5s.osadl.org (updated Sun Dec 04, 2022 12:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2187199150,2rtkit-daemon21870-21rtkit-daemon09:06:320
2187199140,2rtkit-daemon21870-21rtkit-daemon12:13:091
2187199140,2rtkit-daemon21870-21rtkit-daemon11:28:471
24613991312,1cyclictest68350irq/133-lan12:03:431
24613991312,1cyclictest68350irq/133-lan09:32:091
24613991211,1cyclictest68350irq/133-lan10:38:371
24613991211,1cyclictest68350irq/133-lan10:21:561
24613991211,1cyclictest68350irq/133-lan10:09:501
24613991211,1cyclictest68350irq/133-lan10:02:001
24613991211,1cyclictest68350irq/133-lan09:55:451
24613991211,1cyclictest68350irq/133-lan09:08:121
24613991211,1cyclictest68350irq/133-lan08:56:421
24613991211,1cyclictest68350irq/133-lan08:32:371
24613991211,1cyclictest68350irq/133-lan08:06:421
24613991211,1cyclictest68350irq/133-lan07:47:291
24613991211,1cyclictest68350irq/133-lan07:17:151
2187199120,5rtkit-daemon5015-21lldpd07:08:500
2187199120,1rtkit-daemon21870-21rtkit-daemon11:05:400
24613991111,0cyclictest68350irq/133-lan10:40:191
24613991111,0cyclictest68350irq/133-lan09:47:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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