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2026-03-18 - 11:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Wed Mar 18, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2485991020,5rtkit-daemon0-21swapper/319:49:382
82862930,4sleep08289-21kernelversion20:21:120
1897299907,67cyclictest19315-21ps23:01:143
1897299907,67cyclictest19315-21ps23:01:143
1897299904,79cyclictest0-21swapper/321:13:333
1897299904,79cyclictest0-21swapper/321:06:513
1897299904,69cyclictest0-21swapper/322:35:563
1897299894,72cyclictest9964-21ssh20:24:393
1897299893,54cyclictest0-21swapper/319:39:273
1897299884,76cyclictest0-21swapper/317:50:553
1897299884,66cyclictest0-21swapper/323:05:573
1897299874,76cyclictest0-21swapper/321:19:573
1897299874,75cyclictest0-21swapper/322:21:133
1897299874,75cyclictest0-21swapper/320:06:163
1897299874,66cyclictest0-21swapper/320:57:123
1897299873,67cyclictest22444-21df_abs21:31:023
1897299873,65cyclictest18344-21irqstats20:36:133
1897299873,52cyclictest30876-21crond18:05:543
1897299864,64cyclictest15371-21seq22:07:313
1897299864,62cyclictest0-21swapper/319:56:193
1897299863,75cyclictest207971ssh22:16:053
1897299863,75cyclictest207971ssh22:16:053
1897299854,74cyclictest0-21swapper/320:55:153
1897299854,73cyclictest20211-21ntp_kernel_pll_19:51:163
1897299854,73cyclictest0-21swapper/320:42:523
1897299854,73cyclictest0-21swapper/319:16:013
1897299854,71cyclictest0-21swapper/318:36:203
1897299854,62cyclictest0-21swapper/320:31:333
1897299854,61cyclictest0-21swapper/321:58:353
1897299853,74cyclictest23563-21gltestperf18:56:133
1897299853,57cyclictest679-21latency21:46:103
170592850,3sleep03-21ksoftirqd/022:58:390
170592850,3sleep03-21ksoftirqd/022:58:390
1897299844,73cyclictest0-21swapper/320:16:093
1897299844,72cyclictest17189-21ssh19:46:223
1897299844,72cyclictest0-21swapper/321:37:113
1897299844,72cyclictest0-21swapper/321:37:113
1897299844,69cyclictest19663-21cut21:26:093
1897299844,63cyclictest0-21swapper/320:47:553
1897299844,59cyclictest0-21swapper/319:44:493
1897299843,75cyclictest10603-21aten_r1power_en20:25:593
1897299843,73cyclictest9680-21yum22:46:193
1897299843,62cyclictest31678-21taskset19:11:253
1897299843,62cyclictest30117-21aten_r1power_po22:30:563
1897299843,50cyclictest25934-21aten_r1power_en20:01:013
1897299843,50cyclictest15456-21cpuspeed21:20:583
1897299834,73cyclictest0-21swapper/320:11:073
1897299834,73cyclictest0-21swapper/320:11:073
248599820,4rtkit-daemon2484-21rtkit-daemon22:16:240
248599820,4rtkit-daemon2484-21rtkit-daemon22:16:240
1897299824,70cyclictest0-21swapper/318:41:083
1897299824,61cyclictest11757-21diskstats22:51:013
1897299823,65cyclictest1419-21runrttasks21:01:063
1897299823,60cyclictest0-21swapper/322:03:323
1897299823,55cyclictest5009-21ssh21:51:253
1897299814,70cyclictest0-21swapper/319:31:163
1897299814,70cyclictest0-21swapper/317:55:553
1897299814,68cyclictest0-21swapper/318:11:123
1897299814,68cyclictest0-21swapper/318:11:123
1897299814,59cyclictest0-21swapper/322:12:443
1897299813,70cyclictest31773-21ls21:45:463
1897299813,59cyclictest4501-21ssh22:40:533
1897299813,58cyclictest0-21swapper/322:29:293
1897299813,58cyclictest0-21swapper/318:20:543
1897299804,68cyclictest0-21swapper/317:41:063
1897299803,67cyclictest1419-21runrttasks19:23:583
1897299803,56cyclictest0-21swapper/323:00:003
1897299803,56cyclictest0-21swapper/323:00:003
248599790,5rtkit-daemon2484-21rtkit-daemon18:05:490
248599790,4rtkit-daemon2484-21rtkit-daemon23:10:300
1897299784,62cyclictest0-21swapper/319:30:343
1897299783,67cyclictest29277-21users19:06:273
1897299783,45cyclictest0-21swapper/318:21:043
18972997818,43cyclictest1247-21lldpd19:01:043
1897299765,47cyclictest10757-21munin-node18:31:163
1897299764,65cyclictest0-21swapper/318:26:273
1897299753,49cyclictest0-21swapper/318:06:123
1897299743,56cyclictest27359-21iostat17:56:163
1897299734,61cyclictest20487-21tail18:51:043
1897299734,61cyclictest20487-21tail18:51:043
1897299734,53cyclictest0-21swapper/318:46:053
1897199694,15cyclictest0-21swapper/219:56:102
1896899694,28cyclictest0-21swapper/020:31:150
1897299685,56cyclictest0-21swapper/317:40:563
1897199634,14cyclictest0-21swapper/219:36:112
251492627,48sleep10-21swapper/122:21:231
1897199625,13cyclictest0-21swapper/221:51:112
1897199625,12cyclictest0-21swapper/220:11:072
1897199625,12cyclictest0-21swapper/220:11:072
1897199624,39cyclictest0-21swapper/220:21:052
18971996221,26cyclictest0-21swapper/221:46:162
125292624,49sleep20-21swapper/219:41:072
248599610,8rtkit-daemon0-21swapper/123:04:000
248599610,8rtkit-daemon0-21swapper/123:04:000
248599610,8rtkit-daemon0-21swapper/118:08:272
248599610,7rtkit-daemon0-21swapper/122:31:390
1897199604,13cyclictest0-21swapper/223:01:212
1897199604,13cyclictest0-21swapper/223:01:212
1897199604,13cyclictest0-21swapper/221:41:142
189162603,12sleep00-21swapper/022:13:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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