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2021-06-20 - 09:11

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, slot #6

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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  TI

ARMv7 Processor rev 10 (v7l), Linux 4.19.94-rt39-ga242ccf3f1 (Profile)

Latency plot of shadow in rack #a, slot #6
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -n -a0 -t1 -p99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rackaslot6s.osadl.org (updated Thu Feb 04, 2021 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
395527420,3sleep0820-1kworker/0:1H19:05:480
552721380,3chrt21750-1kworker/0:2H21:03:110
221321350,2chrt31767-1kworker/0:3H00:33:570
1509021350,2chrt487-1kworker/0:0H22:44:030
1235621350,5chrt11282-1kworker/0:2H19:34:160
418321340,1chrt2991-1kworker/0:1H21:00:090
768821330,4chrt4283-1kworker/0:2H22:34:580
765621330,2chrt5318-1kworker/0:1H23:57:410
698921330,2chrt6779-1kworker/0:1H21:07:140
550621330,2chrt32702-1kworker/0:1H23:12:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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