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2023-12-01 - 05:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #3

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.
Unexpectedly long latencies may be caused by SMIs
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 rackcslot3s (updated Thu Nov 30, 2023 12:50:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
91722511487,16sleep40-21swapper/407:06:444
92162500480,14sleep10-21swapper/107:07:211
91952498477,15sleep00-21swapper/007:07:040
91472467447,14sleep60-21swapper/607:06:226
91912452431,15sleep50-21swapper/507:07:025
91332351330,15sleep30-21swapper/307:06:113
92912339318,15sleep20-21swapper/207:08:262
91752331311,14sleep70-21swapper/707:06:477
9844997371,1cyclictest1284-21sh10:45:006
9844996159,1cyclictest2237-21cpuspeed_turbos09:35:196
9838995856,1cyclictest20426-21missed_timers10:15:320
9841995755,1cyclictest19873-21cpuspeed_turbos10:15:213
9842995639,16cyclictest2115-21cut10:45:264
32002560,0sleep30-21swapper/309:35:403
984599547,0cyclictest280-21systemd-journal11:55:007
9843995453,0cyclictest14435-21sh10:05:005
9843995428,9cyclictest0-21swapper/509:14:225
9842995452,1cyclictest19896-21tr10:15:214
9844995250,1cyclictest24496-21tr11:35:236
9839995250,1cyclictest3373-21cron12:00:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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