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2024-04-23 - 17:02

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 Tue Apr 23, 2024 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1749823827,0sleep00-21swapper/006:59:240
1126823626,0sleep30-21swapper/306:55:543
1728423425,0sleep20-21swapper/206:56:572
1756923228,0sleep10-21swapper/107:00:131
28415080,0irq/27-eth0-tx-6569-21cut09:41:112
339960,0migration/39904-21sh09:24:453
339960,0migration/39551-21sh12:29:523
339960,0migration/35713-21sh10:21:323
339960,0migration/330692-21sh10:18:083
339960,0migration/324964-21sh09:55:593
339960,0migration/322179-21munin-node08:46:153
339960,0migration/318087-21sh12:14:383
28415060,0irq/27-eth0-tx-3881-21diskmemload09:58:322
28415060,0irq/27-eth0-tx-0-21swapper/212:23:322
28415060,0irq/27-eth0-tx-0-21swapper/212:10:582
28415060,0irq/27-eth0-tx-0-21swapper/212:08:572
28415060,0irq/27-eth0-tx-0-21swapper/212:04:132
28415060,0irq/27-eth0-tx-0-21swapper/211:35:302
28415060,0irq/27-eth0-tx-0-21swapper/211:27:042
28415060,0irq/27-eth0-tx-0-21swapper/211:17:202
28415060,0irq/27-eth0-tx-0-21swapper/211:03:502
28415060,0irq/27-eth0-tx-0-21swapper/210:51:172
28415060,0irq/27-eth0-tx-0-21swapper/210:47:012
28415060,0irq/27-eth0-tx-0-21swapper/210:40:502
28415060,0irq/27-eth0-tx-0-21swapper/210:37:362
28415060,0irq/27-eth0-tx-0-21swapper/210:14:272
28415060,0irq/27-eth0-tx-0-21swapper/210:02:122
28415060,0irq/27-eth0-tx-0-21swapper/209:45:572
28415060,0irq/27-eth0-tx-0-21swapper/209:07:102
28415060,0irq/27-eth0-tx-0-21swapper/007:53:110
28405060,0irq/26-eth0-rx-21380-21grep10:11:123
249960,0watchdog/20-21swapper/211:22:122
249960,0watchdog/20-21swapper/207:41:162
176929960,0cyclictest0-21swapper/211:54:092
176929960,0cyclictest0-21swapper/209:15:422
149960,0migration/031695-21latency_hist10:20:500
149960,0migration/031238-21sh09:56:330
339950,0migration/39411-21taskset08:38:543
339950,0migration/38313-21taskset08:12:533
339950,0migration/37790-21munin-node07:26:063
339950,0migration/36521-21taskset07:24:243
339950,0migration/35569-21taskset07:16:363
339950,0migration/331787-21kthreadcore08:06:103
339950,0migration/329776-21kthreadcore09:36:083
339950,0migration/328089-21latency_hist11:40:493
339950,0migration/328027-21munin-node12:01:053
339950,0migration/327066-21kthreadcore10:36:133
339950,0migration/325193-21fschecks_time07:06:033
339950,0migration/324735-21kthreadcore11:16:143
339950,0migration/323775-21kthreadcore10:56:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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