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2024-04-24 - 15:42

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 Wed Apr 24, 2024 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2054223624,0sleep00-21swapper/006:59:440
291350350,0irq/25-eth10-21swapper/306:56:523
2038223228,0sleep20-21swapper/206:57:542
2036123223,0sleep10-21swapper/106:57:361
20706991313,0cyclictest7072-21sensors09:01:110
20707991212,0cyclictest19181-21sensors08:46:171
8225070,0irq/24-0000:00:929-21latency_hist09:00:472
28415070,0irq/27-eth0-tx-0-21swapper/210:53:212
8225060,0irq/24-0000:00:0-21swapper/211:01:072
339960,0migration/36154-21munin-node07:51:033
339960,0migration/35597-21taskset09:44:133
339960,0migration/317254-21sh12:17:063
339960,0migration/313057-21sh09:47:513
28415060,0irq/27-eth0-tx-3463-21ssh11:31:012
28415060,0irq/27-eth0-tx-30568-21munin-node07:46:130
28415060,0irq/27-eth0-tx-24470-21munin-node09:16:112
28415060,0irq/27-eth0-tx-0-21swapper/212:24:562
28415060,0irq/27-eth0-tx-0-21swapper/212:18:292
28415060,0irq/27-eth0-tx-0-21swapper/212:08:152
28415060,0irq/27-eth0-tx-0-21swapper/210:57:322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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