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2024-04-24 - 22:27

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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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 Apr 24, 2024 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12335299811,42cyclictest0-21swapper/009:45:000
123354998039,35cyclictest161208-21munin-plugin-st11:05:011
123354997837,36cyclictest0-21swapper/112:20:001
123354997731,38cyclictest0-21swapper/108:00:181
123356997630,40cyclictest0-21swapper/207:20:002
12335699752,19cyclictest124889-21/usr/sbin/munin07:20:152
12335699752,19cyclictest124889-21/usr/sbin/munin07:20:142
123354997134,6cyclictest170527-21grep11:55:281
123354997026,11cyclictest0-21swapper/107:20:001
123354996927,5cyclictest0-21swapper/112:00:211
12335299691,3cyclictest0-21swapper/011:50:150
123356996827,36cyclictest0-21swapper/210:35:252
123356996819,8cyclictest0-21swapper/211:55:272
123354996833,7cyclictest0-21swapper/107:50:291
123354996827,8cyclictest0-21swapper/107:55:211
123354996825,10cyclictest0-21swapper/110:55:241
12335299683,53cyclictest0-21swapper/011:30:000
123356996625,5cyclictest0-21swapper/212:00:292
123356996533,27cyclictest165150irq/135-8000000.ethernet-tx211:45:182
123356996529,32cyclictest0-21swapper/207:10:312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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