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2024-04-19 - 23:39

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 Fri Apr 19, 2024 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2509023627,0sleep30-21swapper/306:59:273
2518423521,0sleep00-21swapper/007:00:320
2518123526,0sleep20-21swapper/207:00:302
2487423526,0sleep10-21swapper/106:56:571
28415070,0irq/27-eth0-tx-0-21swapper/212:01:202
28415070,0irq/27-eth0-tx-0-21swapper/211:07:502
28415070,0irq/27-eth0-tx-0-21swapper/209:22:252
339960,0migration/34229-21sh09:48:173
339960,0migration/319943-21sh12:09:363
339960,0migration/319478-21munin-node07:41:193
28415060,0irq/27-eth0-tx-28037-21ssh12:15:062
28415060,0irq/27-eth0-tx-27272-21ssh11:50:452
28415060,0irq/27-eth0-tx-23000-21telnet08:36:100
28415060,0irq/27-eth0-tx-0-21swapper/212:23:102
28415060,0irq/27-eth0-tx-0-21swapper/211:58:032
28415060,0irq/27-eth0-tx-0-21swapper/211:51:212
28415060,0irq/27-eth0-tx-0-21swapper/211:41:252
28415060,0irq/27-eth0-tx-0-21swapper/211:34:222
28415060,0irq/27-eth0-tx-0-21swapper/211:27:312
28415060,0irq/27-eth0-tx-0-21swapper/211:23:002
28415060,0irq/27-eth0-tx-0-21swapper/211:17:392
28415060,0irq/27-eth0-tx-0-21swapper/211:12:122
28415060,0irq/27-eth0-tx-0-21swapper/210:56:152
28415060,0irq/27-eth0-tx-0-21swapper/210:52:372
28415060,0irq/27-eth0-tx-0-21swapper/210:46:182
28415060,0irq/27-eth0-tx-0-21swapper/210:42:502
28415060,0irq/27-eth0-tx-0-21swapper/210:37:272
28415060,0irq/27-eth0-tx-0-21swapper/209:56:092
28415060,0irq/27-eth0-tx-0-21swapper/209:35:182
28415060,0irq/27-eth0-tx-0-21swapper/209:08:552
28405060,0irq/26-eth0-rx-25232-21kthreadcore09:21:183
28405060,0irq/26-eth0-rx-23037-21cat11:26:173
28405060,0irq/26-eth0-rx-14175-40yum-updatesd-he10:21:043
252939966,0cyclictest27647-21sensors09:41:211
252939966,0cyclictest23624-21diskmemload09:13:481
249960,0watchdog/227445-21ssh10:01:412
249960,0watchdog/20-21swapper/209:52:532
249960,0watchdog/20-21swapper/209:38:092
249960,0watchdog/20-21swapper/209:26:372
149960,0migration/026699-21sh11:26:560
149960,0migration/023920-21kthreadcore07:46:200
149960,0migration/014433-21kthreadcore11:41:190
8225050,0irq/24-0000:00:2515-21cat08:20:582
339950,0migration/34092-21kthreadcore07:56:173
339950,0migration/332354-21kthreadcore12:16:143
339950,0migration/331219-21kthreadcore07:26:173
339950,0migration/329851-21kthreadcore11:31:143
339950,0migration/327000-21kthreadcore07:01:153
339950,0migration/326900-21taskset07:47:233
339950,0migration/32587-21kthreadcore07:06:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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