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2026-07-22 - 10:52

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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 rack7slot7s.osadl.org (updated Wed Jul 22, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1152929566,9sleep20-21swapper/219:08:072
1135328775,8sleep00-21swapper/019:05:490
1149828064,12sleep10-21swapper/119:07:421
1139327866,8sleep30-21swapper/319:06:193
1177099330,32cyclictest5673-21kworker/3:121:56:133
1177099290,28cyclictest5673-21kworker/3:121:46:323
1177099281,25cyclictest4571-21diskmemload21:31:313
11770992724,2cyclictest31267-21kworker/3:223:57:023
11770992624,2cyclictest31267-21kworker/3:222:53:433
1177099250,25cyclictest15380-21kworker/3:000:32:533
1177099250,24cyclictest15380-21kworker/3:000:11:123
1177099240,23cyclictest31267-21kworker/3:223:18:133
1176299240,23cyclictest0-21swapper/023:26:530
11770992321,2cyclictest31267-21kworker/3:200:01:533
11770992320,2cyclictest31267-21kworker/3:223:13:323
1177099230,22cyclictest15380-21kworker/3:000:15:033
1176499230,21cyclictest0-21swapper/122:09:031
1177099221,20cyclictest5673-21kworker/3:122:02:423
1177099220,22cyclictest15380-21kworker/3:000:09:323
1177099220,21cyclictest31267-21kworker/3:223:21:423
11767992220,1cyclictest477-21rs:main2
1176499223,19cyclictest0-21swapper/122:27:321
1176499222,2cyclictest23059-21kworker/1:100:36:021
11770992120,1cyclictest0-21swapper/322:36:223
11770992120,1cyclictest0-21swapper/322:27:323
1177099210,21cyclictest31267-21kworker/3:223:28:333
1176499210,2cyclictest0-21swapper/100:17:401
298142200,0sleep20-21swapper/223:20:112
1177099200,20cyclictest31267-21kworker/3:223:07:233
1177099200,20cyclictest31267-21kworker/3:223:01:233
11764992020,0cyclictest0-21swapper/122:44:351
11764992019,1cyclictest0-21swapper/123:25:131
1177099190,16cyclictest0-21swapper/300:35:133
11767991917,1cyclictest477-21rs:main2
1176799190,0cyclictest0-21swapper/222:23:112
11764991916,1cyclictest0-21swapper/122:04:151
1176799180,18cyclictest0-21swapper/200:05:442
1176499181,17cyclictest4571-21diskmemload00:00:541
145652170,0sleep30-21swapper/323:49:253
11767991717,0cyclictest0-21swapper/222:42:442
11764991716,1cyclictest0-21swapper/121:13:271
1176499170,1cyclictest0-21swapper/122:21:031
1176499170,17cyclictest9966-21ssh00:25:011
1176299176,6cyclictest5781-21munin-run20:05:000
11770991615,1cyclictest0-21swapper/322:49:523
11767991614,1cyclictest55750irq/128-enp2s0-00:04:412
1176799160,2cyclictest0-21swapper/223:17:262
1176499162,2cyclictest0-21swapper/123:50:501
11764991615,1cyclictest0-21swapper/123:37:521
11764991615,1cyclictest0-21swapper/100:24:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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