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2025-02-17 - 18:20

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 50 highest latencies:
System rack1slot2s.osadl.org (updated Mon Feb 17, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291350370,0irq/25-eth10-21swapper/306:48:163
2248323624,0sleep00-21swapper/006:46:230
2269723424,0sleep10-21swapper/106:48:521
2271423324,0sleep20-21swapper/206:49:052
28415070,0irq/27-eth0-tx-0-21swapper/210:28:592
249970,0watchdog/20-21swapper/208:15:092
228539970,0cyclictest0-21swapper/110:05:081
228529970,0cyclictest21070-21diskmemload09:11:550
339960,0migration/39341-21sh10:41:263
339960,0migration/38657-21sh10:17:593
339960,0migration/315493-21sh09:58:413
339960,0migration/313557-21munin-node07:55:063
339960,0migration/312694-21sh09:05:513
28415060,0irq/27-eth0-tx-0-21swapper/211:54:592
28415060,0irq/27-eth0-tx-0-21swapper/211:51:142
28415060,0irq/27-eth0-tx-0-21swapper/211:46:462
28415060,0irq/27-eth0-tx-0-21swapper/211:42:072
28415060,0irq/27-eth0-tx-0-21swapper/211:36:532
28415060,0irq/27-eth0-tx-0-21swapper/211:32:322
28415060,0irq/27-eth0-tx-0-21swapper/211:26:012
28415060,0irq/27-eth0-tx-0-21swapper/211:19:532
28415060,0irq/27-eth0-tx-0-21swapper/211:08:082
28415060,0irq/27-eth0-tx-0-21swapper/210:56:382
28415060,0irq/27-eth0-tx-0-21swapper/210:50:152
28415060,0irq/27-eth0-tx-0-21swapper/210:09:322
28415060,0irq/27-eth0-tx-0-21swapper/209:59:052
28415060,0irq/27-eth0-tx-0-21swapper/209:51:502
28415060,0irq/27-eth0-tx-0-21swapper/209:26:302
28415060,0irq/27-eth0-tx-0-21swapper/209:04:482
28415060,0irq/27-eth0-tx-0-21swapper/007:10:050
28405060,0irq/26-eth0-rx-4975-21diskstats09:00:053
28405060,0irq/26-eth0-rx-31189-21grep11:50:043
28405060,0irq/26-eth0-rx-25670-21sh12:10:053
28405060,0irq/26-eth0-rx-15943-21irqcore09:35:083
28405060,0irq/26-eth0-rx-15700-21ssh11:38:573
259960,0migration/221351-21sh11:17:352
249960,0watchdog/221697-21awk10:00:092
249960,0watchdog/20-21swapper/212:18:372
249960,0watchdog/20-21swapper/210:40:092
228559966,0cyclictest0-21swapper/210:20:022
228539966,0cyclictest26354-21kworker/1:111:42:101
228539966,0cyclictest22110-21kworker/1:009:36:241
228539965,0cyclictest22110-21kworker/1:010:50:061
228539965,0cyclictest22110-21kworker/1:008:06:061
228529960,0cyclictest0-21swapper/010:21:260
179960,0migration/18952-21munin-node10:40:181
149960,0migration/015807-21sh09:59:380
8225050,0irq/24-0000:00:3815-21idleruntime-cro06:59:512
8225050,0irq/24-0000:00:11465-21sadc07:29:512
339950,0migration/39890-21kthreadcore11:10:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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