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2026-06-07 - 23:47

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 Jun 07, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304450350,0irq/25-eth10-21swapper/306:48:533
1974523222,0sleep20-21swapper/206:53:222
1952423228,0sleep10-21swapper/106:50:531
1956222925,0sleep00-21swapper/006:51:160
339970,0migration/310332-21sh09:08:243
8215060,0irq/24-0000:00:18255-21perf09:13:222
339960,0migration/31821-21turbostat09:03:223
339960,0migration/317230-21sh11:10:553
339960,0migration/316532-21sh10:30:333
339960,0migration/31256-21timerandwakeup12:18:443
339960,0migration/310840-21sh12:07:253
29725060,0irq/27-eth0-tx-20980-21munin-node07:18:370
29715060,0irq/26-eth0-rx-9687-21irqcore07:33:383
29715060,0irq/26-eth0-rx-7725-21ntp_states11:03:423
29715060,0irq/26-eth0-rx-28447-21if_eth1.311:58:373
198149960,0cyclictest0-21swapper/112:01:591
198149960,0cyclictest0-21swapper/111:41:481
198139960,0cyclictest0-21swapper/009:46:010
8215050,0irq/24-0000:00:2583-21perf07:53:232
339950,0migration/38921-21taskset10:26:393
339950,0migration/38889-21diskmemload09:45:243
339950,0migration/38244-21taskset07:31:503
339950,0migration/37404-21kthreadcore11:43:403
339950,0migration/37137-21taskset07:04:453
339950,0migration/3367-21taskset10:40:543
339950,0migration/33380-21taskset08:15:573
339950,0migration/327673-21munin-node11:18:373
339950,0migration/327579-21fschecks_time11:38:353
339950,0migration/326748-21cpuspeed_turbos09:38:343
339950,0migration/326259-21taskset12:15:033
339950,0migration/326082-21latency_hist09:58:223
339950,0migration/325156-21taskset11:15:083
339950,0migration/324400-21taskset10:14:213
339950,0migration/322979-21aten_r1power_fr08:08:333
339950,0migration/322246-21munin-node07:18:393
339950,0migration/318375-21cpu08:53:343
339950,0migration/316209-21munin-node07:38:383
339950,0migration/315781-21diskmemload10:08:443
339950,0migration/313518-21kthreadcore12:08:383
339950,0migration/313187-21kthreadcore08:48:393
339950,0migration/312701-21kthreadcore09:28:393
339950,0migration/310456-21kthreadcore07:08:393
29725050,0irq/27-eth0-tx-3023-21kthreadcore10:23:382
29725050,0irq/27-eth0-tx-24892-21ssh10:55:342
29725050,0irq/27-eth0-tx-18208-21munin-node08:53:430
29725050,0irq/27-eth0-tx-18049-21taskset11:32:002
29725050,0irq/27-eth0-tx-1527-21chrt09:42:432
29725050,0irq/27-eth0-tx-0-21swapper/212:18:422
29725050,0irq/27-eth0-tx-0-21swapper/210:37:292
29725050,0irq/27-eth0-tx-0-21swapper/209:32:502
29725050,0irq/27-eth0-tx-0-21swapper/209:02:162
29725050,0irq/27-eth0-tx-0-21swapper/008:28:430
29715050,0irq/26-eth0-rx-8316-21unixbench_singl09:03:443
29715050,0irq/26-eth0-rx-32322-21unixbench_multi09:58:453
29715050,0irq/26-eth0-rx-3137-21if_err_eth009:23:363
29715050,0irq/26-eth0-rx-26355-21ssh11:56:073
29715050,0irq/26-eth0-rx-23579-21grep06:53:403
29715050,0irq/26-eth0-rx-22533-21kthreadcore09:13:393
29715050,0irq/26-eth0-rx-14749-21kthreadcore11:48:403
29715050,0irq/26-eth0-rx-0-21swapper/311:33:263
29715050,0irq/26-eth0-rx-0-21swapper/311:23:333
29715050,0irq/26-eth0-rx-0-21swapper/310:58:403
29715050,0irq/26-eth0-rx-0-21swapper/310:56:243
29715050,0irq/26-eth0-rx-0-21swapper/310:43:373
29715050,0irq/26-eth0-rx-0-21swapper/310:35:183
29715050,0irq/26-eth0-rx-0-21swapper/310:03:333
29715050,0irq/26-eth0-rx-0-21swapper/309:49:123
29715050,0irq/26-eth0-rx-0-21swapper/309:36:123
29715050,0irq/26-eth0-rx-0-21swapper/308:38:393
29715050,0irq/26-eth0-rx-0-21swapper/307:58:413
27150,0ktimersoftd/20-21swapper/211:40:002
27150,0ktimersoftd/20-21swapper/211:19:502
259950,0migration/24452-21kthreadcore09:43:382
259950,0migration/24025-21kthreadcore09:03:372
259950,0migration/230254-21kthreadcore06:58:412
259950,0migration/226276-21sh11:37:102
259950,0migration/226043-21sh12:14:302
259950,0migration/225060-21sh09:35:102
259950,0migration/224339-21munin-node09:53:442
259950,0migration/223590-21sh10:13:402
259950,0migration/217128-21unixbench-2d11:48:462
259950,0migration/216196-21unixbench-2d09:48:452
259950,0migration/214381-21aten_r1power_en07:13:332
259950,0migration/212153-21fschecks_time08:48:362
198149955,0cyclictest0-21swapper/112:10:491
198149955,0cyclictest0-21swapper/110:26:551
198149955,0cyclictest0-21swapper/110:05:091
198149950,0cyclictest0-21swapper/112:18:321
198149950,0cyclictest0-21swapper/112:04:111
198149950,0cyclictest0-21swapper/111:09:101
198149950,0cyclictest0-21swapper/110:23:171
198149950,0cyclictest0-21swapper/109:25:351
198149950,0cyclictest0-21swapper/109:10:361
198149950,0cyclictest0-21swapper/109:04:461
198139955,0cyclictest0-21swapper/010:26:320
198139955,0cyclictest0-21swapper/009:22:410
198139955,0cyclictest0-21swapper/009:15:450
198139954,0cyclictest1772-21ssh11:41:250
198139950,0cyclictest0-21swapper/011:21:150
198139950,0cyclictest0-21swapper/010:19:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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