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2025-02-11 - 00:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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 rackbslot5s.osadl.org (updated Mon Feb 10, 2025 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
436602996349,11cyclictest513448-21kworker/u8:1+events_unbound12:00:123
436598995137,10cyclictest311ktimers/207:30:172
436598994840,5cyclictest464700-21cron08:30:002
436589994732,9cyclictest13650irq/42-30be0000.ethernet09:20:150
436598994637,5cyclictest466420-21grep08:35:002
436602994437,4cyclictest436581-21cyclictest12:25:003
436589994437,4cyclictest536344-21cron12:25:000
436593994320,6cyclictest131rcu_preempt11:35:141
436602994232,7cyclictest540425-21sendmail12:40:003
436602994231,7cyclictest524185-21grep11:40:243
436593994230,7cyclictest539993-21unixbench_singl12:35:241
436593994125,13cyclictest231ktimers/107:55:131
436593994125,13cyclictest231ktimers/107:55:121
436602993931,4cyclictest0-21swapper/311:30:123
436602993927,8cyclictest470046-21sh08:45:013
436598993929,6cyclictest478373-21grep09:05:252
43659899389,10cyclictest528127-21sed11:55:262
436593993830,4cyclictest0-21swapper/112:35:011
436593993828,6cyclictest0-21swapper/107:35:261
436589993826,9cyclictest0-21swapper/010:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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