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2024-11-23 - 17:08

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 Sat Nov 23, 2024 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291350440,0irq/25-eth10-21swapper/306:52:373
2790123422,0sleep00-21swapper/006:52:030
2772123425,0sleep20-21swapper/206:49:572
2768923324,0sleep10-21swapper/106:49:361
280479999,0cyclictest2375-21sensors12:03:181
339960,0migration/329930-21sh09:56:483
339960,0migration/329601-21diskmemload12:03:093
339960,0migration/328328-21sh10:15:443
339960,0migration/327744-21sh12:20:263
339960,0migration/326863-21sh10:35:073
339960,0migration/322859-21latency09:08:133
339960,0migration/314274-21sh09:45:533
28415060,0irq/27-eth0-tx-8727-21port_sshpriv11:03:152
28415060,0irq/27-eth0-tx-20145-21munin-node10:33:142
28415060,0irq/27-eth0-tx-0-21swapper/212:19:432
28415060,0irq/27-eth0-tx-0-21swapper/212:03:112
28415060,0irq/27-eth0-tx-0-21swapper/212:02:002
28415060,0irq/27-eth0-tx-0-21swapper/211:33:382
28415060,0irq/27-eth0-tx-0-21swapper/211:25:362
28415060,0irq/27-eth0-tx-0-21swapper/211:20:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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