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2024-09-11 - 14:43

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 20 highest latencies:
System rackeslot6s.osadl.org (updated Wed Sep 11, 2024 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23269099652,35cyclictest260293-21/usr/sbin/munin22:10:240
232695996320,34cyclictest260568-21unixbench_singl22:10:292
232695995851,4cyclictest30-21rcuc/222:20:012
232690995849,6cyclictest0-21swapper/020:05:000
23269099575,49cyclictest0-21swapper/023:00:180
23269099575,49cyclictest0-21swapper/023:00:180
232690995647,5cyclictest0-21swapper/023:40:290
232690995647,5cyclictest0-21swapper/023:40:280
23269599545,20cyclictest30-21rcuc/200:25:012
232690995347,4cyclictest284729-21munin-plugin-st00:35:010
232692995237,10cyclictest0-21swapper/122:40:011
232692995231,15cyclictest268324-21sendmail22:59:591
232690995236,10cyclictest15-21rcuc/021:30:140
232690995221,17cyclictest131ktimers/020:20:140
232690995221,17cyclictest131ktimers/020:20:140
232690995135,11cyclictest0-21swapper/000:00:010
232695995036,9cyclictest0-21swapper/223:30:002
232690995046,2cyclictest0-21swapper/022:00:120
23269099502,12cyclictest246471-21fschecks_time20:50:200
232690994940,6cyclictest283048-21apt00:25:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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