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2024-07-16 - 15:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #2

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 rack1slot2s.osadl.org (updated Tue Jul 16, 2024 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1220023929,0sleep10-21swapper/106:55:051
1231423727,0sleep30-21swapper/306:56:273
1210623627,0sleep20-21swapper/206:53:582
1241623423,0sleep00-21swapper/006:57:320
12503991313,0cyclictest6445-21snmpd11:51:001
125039988,0cyclictest6445-21snmpd08:50:291
339960,0migration/3761-21missed_timers10:43:103
339960,0migration/37127-21sh12:11:583
339960,0migration/34098-21sh10:05:013
339960,0migration/329768-21munin-node12:03:123
339960,0migration/312677-21sh10:12:153
28415060,0irq/27-eth0-tx-0-21swapper/212:18:162
28415060,0irq/27-eth0-tx-0-21swapper/212:12:162
28415060,0irq/27-eth0-tx-0-21swapper/212:05:422
28415060,0irq/27-eth0-tx-0-21swapper/212:01:562
28415060,0irq/27-eth0-tx-0-21swapper/211:51:022
28415060,0irq/27-eth0-tx-0-21swapper/211:43:482
28415060,0irq/27-eth0-tx-0-21swapper/211:35:482
28415060,0irq/27-eth0-tx-0-21swapper/211:22:102
28415060,0irq/27-eth0-tx-0-21swapper/211:00:322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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