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2022-12-04 - 22:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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 
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ARM Freescale i.MX6UL @528 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #5, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50500000 -m -n -a0 -t1 -p99 -i396 -h400 -q
Total number of samples: 50.5 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 rack5slot7s.osadl.org (updated Sun Dec 04, 2022 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6918224362204,88sleep00-21swapper07:09:070
70639916415,22cyclictest25316-21apt-get12:15:230
70639916215,120cyclictest2595-21apt-get10:00:530
70639916116,29cyclictest27219-21diskstats09:10:450
70639916116,120cyclictest24540-21users08:51:150
70639916014,119cyclictest17861-21apt-get11:30:200
70639915919,25cyclictest15573-21irqstats11:16:290
70639915834,105cyclictest30159-21unixbench_singl09:26:210
70639915816,100cyclictest23513-21apt-get12:05:270
70639915812,122cyclictest12237-21munin-run07:40:030
7063991579,123cyclictest16938-21grep08:06:090
70639915717,115cyclictest18693-21munin-run08:20:030
70639915715,118cyclictest7872-21munin-node07:15:040
70639915641,94cyclictest26498-21kernelversion09:05:470
70639915617,22cyclictest17759-21apt11:30:010
70639915616,24cyclictest20745-21df_inode08:31:020
70639915615,27cyclictest26148-21/usr/sbin/munin12:20:330
70639915528,21cyclictest0-21swapper11:40:520
70639915519,111cyclictest16268-21apt-get11:20:340
70639915517,110cyclictest8773-21apt-get10:35:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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