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2022-12-04 - 23:04

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #1

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 Xeon E3-1230 V2 @3300 MHz, Linux 3.18.36-rt37 (Profile)

Latency plot of shadow in rack #0, slot #1
Data to construct the above plot have been generated using the RT test utility cyclictest.
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 rack0slot1s.osadl.org (updated Sun Dec 04, 2022 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22873995857,1cyclictest0-21swapper/311:51:363
2250825636,17sleep40-21swapper/407:07:584
2249125434,17sleep50-21swapper/507:07:445
2234424736,8sleep00-21swapper/007:05:380
2236024323,17sleep70-21swapper/707:05:537
2251024020,17sleep60-21swapper/607:08:006
2239223716,18sleep10-21swapper/107:06:201
2246023615,18sleep30-21swapper/307:07:173
2039723615,18sleep20-21swapper/207:05:072
22891992017,2cyclictest0-21swapper/612:25:176
22850991916,2cyclictest0-21swapper/007:55:170
22850991915,3cyclictest0-21swapper/012:40:000
22850991915,3cyclictest0-21swapper/008:45:150
22891991814,3cyclictest0-21swapper/607:41:516
2288499170,2cyclictest0-21swapper/512:31:075
2288499170,16cyclictest0-21swapper/508:15:195
2288499160,14cyclictest0-21swapper/512:11:525
2288499160,13cyclictest0-21swapper/509:38:075
2288499160,13cyclictest0-21swapper/508:08:225
22873991614,1cyclictest23143-21munin-run12:00:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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