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2025-07-13 - 07:39

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 100 highest latencies:
System rack1slot2s.osadl.org (updated Sun Jul 13, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2246227170,0sleep00-21swapper/018:41:050
291350540,0irq/25-eth10-21swapper/318:43:563
2244924936,0sleep20-21swapper/218:40:552
2251823526,0sleep10-21swapper/118:41:421
249970,0watchdog/225066-21kthreadcore23:49:502
339960,0migration/39113-21sh22:38:253
339960,0migration/36312-21sh23:36:093
339960,0migration/325850-21sh22:07:083
339960,0migration/32248-21munin-node20:49:503
339960,0migration/317095-21sh22:43:323
28415060,0irq/27-eth0-tx-0-21swapper/223:56:012
28415060,0irq/27-eth0-tx-0-21swapper/223:46:582
28415060,0irq/27-eth0-tx-0-21swapper/223:15:112
28415060,0irq/27-eth0-tx-0-21swapper/223:09:112
28415060,0irq/27-eth0-tx-0-21swapper/222:52:252
28415060,0irq/27-eth0-tx-0-21swapper/222:43:422
28415060,0irq/27-eth0-tx-0-21swapper/222:24:032
28415060,0irq/27-eth0-tx-0-21swapper/222:13:592
28415060,0irq/27-eth0-tx-0-21swapper/221:55:312
28415060,0irq/27-eth0-tx-0-21swapper/221:42:342
28415060,0irq/27-eth0-tx-0-21swapper/221:31:322
28415060,0irq/27-eth0-tx-0-21swapper/221:24:402
28415060,0irq/27-eth0-tx-0-21swapper/221:09:552
28415060,0irq/27-eth0-tx-0-21swapper/221:01:272
28415060,0irq/27-eth0-tx-0-21swapper/220:48:012
28415060,0irq/27-eth0-tx-0-21swapper/020:24:440
28415060,0irq/27-eth0-tx-0-21swapper/019:54:300
28415060,0irq/27-eth0-tx-0-21swapper/019:44:540
28415060,0irq/27-eth0-tx-0-21swapper/018:51:340
28405060,0irq/26-eth0-rx-7650-21kthreadcore20:54:513
28405060,0irq/26-eth0-rx-7650-21kthreadcore20:54:513
28405060,0irq/26-eth0-rx-24111-21rm22:24:563
28405060,0irq/26-eth0-rx-0-21swapper/323:44:423
28405060,0irq/26-eth0-rx-0-21swapper/321:56:273
249960,0watchdog/220651-21chrt20:41:382
249960,0watchdog/217879-21kthreadcore21:19:502
249960,0watchdog/20-21swapper/222:17:302
149960,0migration/03447-21kthreadcore20:29:510
149960,0migration/02716-21sh21:31:390
149960,0migration/02201-21latency_hist22:14:310
339950,0migration/39447-21kthreadcore19:44:523
339950,0migration/38484-21gltestperf23:39:513
339950,0migration/37575-21kthreadcore21:14:523
339950,0migration/36548-21needreboot20:29:533
339950,0migration/36308-21kthreadcore22:54:503
339950,0migration/35038-21timerandwakeup19:39:573
339950,0migration/34062-21timerwakeupswit19:14:583
339950,0migration/34037-21aten_r1power_en18:54:463
339950,0migration/332076-21taskset20:01:513
339950,0migration/329593-21df_abs21:09:473
339950,0migration/326716-21kthreadcore23:49:513
339950,0migration/32452-21aten_r1power_cu22:14:423
339950,0migration/323332-21kthreadcore19:29:523
339950,0migration/323049-21taskset18:44:453
339950,0migration/322938-21munin-node19:04:543
339950,0migration/321758-21latency23:24:513
339950,0migration/321203-21kthreadcore19:54:503
339950,0migration/320182-21taskset20:19:353
339950,0migration/317750-21switchtime21:39:583
339950,0migration/317444-21cpuspeed_turbos23:04:473
339950,0migration/317273-21taskset22:00:093
339950,0migration/311984-21kthreadcore20:34:523
28415050,0irq/27-eth0-tx-23912-21ssh22:24:542
28415050,0irq/27-eth0-tx-18261-21munin-node19:29:480
28415050,0irq/27-eth0-tx-1480-21ssh21:50:202
28415050,0irq/27-eth0-tx-10596-21rt-features21:14:572
28415050,0irq/27-eth0-tx-0-21swapper/223:34:562
28415050,0irq/27-eth0-tx-0-21swapper/223:22:352
28415050,0irq/27-eth0-tx-0-21swapper/222:58:142
28415050,0irq/27-eth0-tx-0-21swapper/222:35:452
28415050,0irq/27-eth0-tx-0-21swapper/222:32:032
28415050,0irq/27-eth0-tx-0-21swapper/222:00:022
28415050,0irq/27-eth0-tx-0-21swapper/221:47:232
28415050,0irq/27-eth0-tx-0-21swapper/220:50:182
28415050,0irq/27-eth0-tx-0-21swapper/200:09:572
28415050,0irq/27-eth0-tx-0-21swapper/200:06:592
28415050,0irq/27-eth0-tx-0-21swapper/019:14:470
28405050,0irq/26-eth0-rx-6122-21ssh23:14:533
28405050,0irq/26-eth0-rx-13661-21kthreadcore22:59:523
28405050,0irq/26-eth0-rx-0-21swapper/323:54:473
28405050,0irq/26-eth0-rx-0-21swapper/323:20:503
28405050,0irq/26-eth0-rx-0-21swapper/323:10:443
28405050,0irq/26-eth0-rx-0-21swapper/322:48:193
28405050,0irq/26-eth0-rx-0-21swapper/322:20:053
28405050,0irq/26-eth0-rx-0-21swapper/322:10:183
28405050,0irq/26-eth0-rx-0-21swapper/321:34:503
28405050,0irq/26-eth0-rx-0-21swapper/321:25:213
28405050,0irq/26-eth0-rx-0-21swapper/321:23:563
28405050,0irq/26-eth0-rx-0-21swapper/321:04:433
28405050,0irq/26-eth0-rx-0-21swapper/320:59:503
28405050,0irq/26-eth0-rx-0-21swapper/300:05:183
28405050,0irq/26-eth0-rx-0-21swapper/300:00:473
259950,0migration/228122-21kthreadcore23:09:522
259950,0migration/219589-21fschecks_time22:04:492
259950,0migration/212695-21kthreadcore23:39:552
249950,0watchdog/20-21swapper/223:33:302
249950,0watchdog/20-21swapper/223:24:422
249950,0watchdog/20-21swapper/222:46:022
249950,0watchdog/20-21swapper/221:34:342
249950,0watchdog/20-21swapper/221:04:382
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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