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2025-07-19 - 06:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack2slot7s.osadl.org (updated Sat Jul 19, 2025 00:40:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63693399632,28cyclictest691179-21ssh21:33:052
636933995430,5cyclictest652471-21fschecks_time20:02:562
636932995331,19cyclictest700524-21cron21:45:001
636932995243,6cyclictest775381-21munin-run23:20:011
636932995243,6cyclictest775381-21munin-run23:20:011
636931995240,9cyclictest806928-21grep00:00:010
63693199523,42cyclictest726487-21ssh22:18:010
636932995132,16cyclictest750356-21/usr/sbin/munin22:48:111
636931995137,11cyclictest955-21mta-sts-daemon20:45:020
63693199513,35cyclictest679231-21sh21:18:010
636932995026,21cyclictest0-21swapper/121:17:521
636932994926,20cyclictest0-21swapper/121:35:011
636931994939,6cyclictest0-21swapper/022:35:010
636931994938,8cyclictest703209-21mailstats21:48:140
63693299482,16cyclictest640900-21ntpq19:23:101
636932994820,25cyclictest0-21swapper/122:08:071
636932994734,8cyclictest640076-21latency_hist19:20:031
636931994731,13cyclictest421-21avahi-daemon21:20:420
636933994637,4cyclictest956-21mta-sts-daemon20:43:082
636932994621,22cyclictest0-21swapper/123:30:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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