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2026-05-14 - 21:32

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 Thu May 14, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1371824834,0sleep00-21swapper/006:53:120
304450350,0irq/25-eth10-21swapper/306:50:403
1384823422,0sleep10-21swapper/106:54:451
1383423425,0sleep20-21swapper/206:54:342
8215060,0irq/24-0000:00:27647-21sadc11:05:392
339960,0migration/34512-21latency_hist08:25:393
339960,0migration/32909-21sh10:07:093
339960,0migration/327039-21sh10:22:163
339960,0migration/319732-21runrttasks09:37:563
339960,0migration/319607-21sh11:00:293
339960,0migration/316928-21latency_hist08:10:403
29715060,0irq/26-eth0-rx-4889-21cut11:10:543
29715060,0irq/26-eth0-rx-20092-21perl11:40:523
29715060,0irq/26-eth0-rx-17230-21unixbench_multi11:56:023
29715060,0irq/26-eth0-rx-1377-21users11:26:023
149960,0migration/020162-21sh10:40:490
149960,0migration/01512-21sh11:47:000
4150,0ktimersoftd/00-21swapper/009:48:350
339950,0migration/38827-21cpuspeed_turbos07:15:513
339950,0migration/38198-21missed_timers07:35:573
339950,0migration/38135-21taskset07:14:063
339950,0migration/3555-21kthreadcore07:30:553
339950,0migration/35124-21munin-node09:30:513
339950,0migration/34714-21aten_r1power_en09:50:483
339950,0migration/34431-21fschecks_count10:50:513
339950,0migration/33344-21taskset09:27:073
339950,0migration/33110-21munin-node12:10:493
339950,0migration/329476-21fschecks_time09:05:523
339950,0migration/327749-21cpuspeed_turbos07:05:503
339950,0migration/327355-21taskset09:41:503
339950,0migration/327041-21taskset07:02:533
339950,0migration/324834-21kthreadcore09:00:563
339950,0migration/316629-21kthreadcore07:20:553
339950,0migration/314006-21irqcore09:15:543
339950,0migration/312903-21kthreadcore07:40:563
339950,0migration/310621-21sh10:31:573
339950,0migration/310621-21sh10:31:573
29725050,0irq/27-eth0-tx-8942-21python11:51:002
29725050,0irq/27-eth0-tx-4139-21munin-node10:31:012
29725050,0irq/27-eth0-tx-4139-21munin-node10:31:012
29725050,0irq/27-eth0-tx-28494-21munin-node07:30:570
29725050,0irq/27-eth0-tx-26054-21memory09:00:572
29725050,0irq/27-eth0-tx-22869-21munin-node07:50:510
29725050,0irq/27-eth0-tx-21902-21if_eth1.209:40:542
29725050,0irq/27-eth0-tx-12928-21munin-node09:35:532
29725050,0irq/27-eth0-tx-12678-21uname11:35:542
29725050,0irq/27-eth0-tx-12499-21kthreadcore11:55:552
29725050,0irq/27-eth0-tx-10851-21munin-node12:16:012
29725050,0irq/27-eth0-tx-0-21swapper/212:22:092
29725050,0irq/27-eth0-tx-0-21swapper/211:46:362
29725050,0irq/27-eth0-tx-0-21swapper/211:27:072
29725050,0irq/27-eth0-tx-0-21swapper/211:11:082
29725050,0irq/27-eth0-tx-0-21swapper/211:05:582
29725050,0irq/27-eth0-tx-0-21swapper/209:33:312
29725050,0irq/27-eth0-tx-0-21swapper/008:50:500
29725050,0irq/27-eth0-tx-0-21swapper/007:57:460
29725050,0irq/27-eth0-tx-0-21swapper/007:48:160
29725050,0irq/27-eth0-tx-0-21swapper/007:37:160
29715050,0irq/26-eth0-rx-20530-21if_err_eth1.211:20:533
29715050,0irq/26-eth0-rx-16493-21kthreadcore06:55:573
29715050,0irq/26-eth0-rx-14507-21cut10:15:563
29715050,0irq/26-eth0-rx-13729-21irqstats08:55:573
29715050,0irq/26-eth0-rx-13082-21df_abs09:55:513
29715050,0irq/26-eth0-rx-0-21swapper/311:39:413
29715050,0irq/26-eth0-rx-0-21swapper/311:33:093
29715050,0irq/26-eth0-rx-0-21swapper/311:15:513
29715050,0irq/26-eth0-rx-0-21swapper/311:06:413
29715050,0irq/26-eth0-rx-0-21swapper/310:41:533
29715050,0irq/26-eth0-rx-0-21swapper/310:39:283
29715050,0irq/26-eth0-rx-0-21swapper/310:27:443
29715050,0irq/26-eth0-rx-0-21swapper/310:10:563
29715050,0irq/26-eth0-rx-0-21swapper/310:00:413
29715050,0irq/26-eth0-rx-0-21swapper/309:48:363
259950,0migration/26579-21idleruntime08:50:532
259950,0migration/25487-21idleruntime09:50:512
259950,0migration/229777-21idleruntime09:45:522
259950,0migration/225814-21sh11:41:512
259950,0migration/22164-21sendmail_mailqu09:06:002
259950,0migration/220103-21latency_hist10:40:392
259950,0migration/212230-21sh10:15:382
259950,0migration/211630-21sh09:12:542
249950,0watchdog/2369-21cut10:05:572
249950,0watchdog/217366-21sed08:31:022
169950,0watchdog/117271-21grep11:15:571
140009955,0cyclictest0-21swapper/212:06:472
140009954,0cyclictest29004-21date09:25:392
149950,0migration/08530-21kthreadcore10:50:560
149950,0migration/0714-21kthreadcore08:20:560
149950,0migration/06770-21kthreadcore08:00:540
149950,0migration/06010-21kthreadcore11:30:560
149950,0migration/05627-21kthreadcore10:30:550
149950,0migration/05627-21kthreadcore10:30:550
149950,0migration/05458-21taskset08:50:050
149950,0migration/04639-21latency_hist09:10:390
149950,0migration/03511-21munin-node11:50:500
149950,0migration/029228-21kernelversion11:05:540
149950,0migration/028874-21taskset09:05:500
149950,0migration/028050-21df_abs11:25:510
149950,0migration/027305-21kthreadcore08:15:550
149950,0migration/026002-21kthreadcore07:25:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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