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2024-07-27 - 14:17

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 Sat Jul 27, 2024 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1694023623,0sleep00-21swapper/006:56:040
291350350,0irq/25-eth10-21swapper/306:52:273
1682723424,0sleep10-21swapper/106:54:451
1669623127,0sleep20-21swapper/206:53:102
339960,0migration/32941-21sh10:29:073
339960,0migration/327078-21sh12:26:083
339960,0migration/321625-21sh09:41:473
339960,0migration/321180-21munin-node08:57:413
339960,0migration/319024-21sh11:21:553
339960,0migration/318631-21sh11:00:473
339960,0migration/318472-21sh11:40:123
28415060,0irq/27-eth0-tx-26248-21chrt11:44:162
28415060,0irq/27-eth0-tx-0-21swapper/212:16:512
28415060,0irq/27-eth0-tx-0-21swapper/212:02:422
28415060,0irq/27-eth0-tx-0-21swapper/211:32:372
28415060,0irq/27-eth0-tx-0-21swapper/211:23:412
28415060,0irq/27-eth0-tx-0-21swapper/211:19:002
28415060,0irq/27-eth0-tx-0-21swapper/211:16:502
28415060,0irq/27-eth0-tx-0-21swapper/210:56:372
28415060,0irq/27-eth0-tx-0-21swapper/210:15:592
28415060,0irq/27-eth0-tx-0-21swapper/210:09:012
28415060,0irq/27-eth0-tx-0-21swapper/210:00:502
28415060,0irq/27-eth0-tx-0-21swapper/209:40:222
28415060,0irq/27-eth0-tx-0-21swapper/008:35:500
28405060,0irq/26-eth0-rx-8801-21ntp_kernel_pll_11:12:403
28405060,0irq/26-eth0-rx-29091-21sh10:07:073
28405060,0irq/26-eth0-rx-21151-21iostat_ios10:42:403
249960,0watchdog/226410-21cut07:27:382
249960,0watchdog/212167-21sed09:32:452
249960,0watchdog/20-21swapper/210:07:012
249960,0watchdog/20-21swapper/209:02:412
171249960,0cyclictest0-21swapper/211:11:162
171239960,0cyclictest0-21swapper/111:29:441
171219965,0cyclictest1193-21munin-node08:22:350
8225050,0irq/24-0000:00:18029-21latency_hist07:22:192
35150,0ktimersoftd/30-21swapper/310:40:543
339950,0migration/38722-21kthreadcore08:02:403
339950,0migration/3852-40yum-updatesd08:21:223
339950,0migration/37999-21aten_r1power_fr08:27:323
339950,0migration/36440-21sshd07:59:503
339950,0migration/34875-21kthreadcore12:12:373
339950,0migration/34714-21kthreadcore11:32:363
339950,0migration/331753-21munin-node07:52:453
339950,0migration/330028-21kthreadcore11:07:383
339950,0migration/328178-21missed_timers09:22:373
339950,0migration/322962-21munin-node09:42:353
339950,0migration/320528-21idleruntime12:02:343
339950,0migration/317265-21munin-node07:17:483
339950,0migration/316435-21kthreadcore11:57:393
339950,0migration/314200-21fschecks_time09:57:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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