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2026-07-27 - 05:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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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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 rack3slot6s.osadl.org (updated Mon Jul 27, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27560211594,15sleep20-21swapper/219:08:342
27459211394,14sleep10-21swapper/119:07:161
27425210889,14sleep30-21swapper/319:06:503
27380210886,17sleep00-21swapper/019:06:150
165812700,1sleep00-21swapper/023:27:460
10262700,0sleep00-21swapper/022:05:130
300182690,0sleep10-21swapper/120:35:131
67122500,1sleep36711-21pzem_current20:55:193
163122230,3sleep011-21rcuc/020:00:150
102702230,4sleep22770099cyclictest19:45:142
104442220,1sleep121-21rcuc/122:15:131
27701992118,2cyclictest7387-21kworker/u8:223:19:043
2770199210,16cyclictest0-21swapper/323:22:043
2770199210,16cyclictest0-21swapper/322:47:043
2770199210,16cyclictest0-21swapper/322:37:043
2769999212,2cyclictest23-21ksoftirqd/123:14:041
27699992118,2cyclictest8784-21kworker/u8:321:14:041
27699992118,2cyclictest7847-21kworker/u8:119:54:041
27699992118,2cyclictest32080-21kworker/u8:219:22:041
27699992118,2cyclictest30942-21kworker/u8:023:32:041
27699992118,2cyclictest21833-21kworker/u8:019:47:041
27699992118,2cyclictest17237-21kworker/u8:222:57:041
27699992118,2cyclictest15795-21kworker/u8:021:59:041
27699992118,2cyclictest11384-21kworker/u8:220:22:011
2770199200,19cyclictest0-21swapper/321:10:123
2770199200,18cyclictest0-21swapper/322:00:123
2770199200,18cyclictest0-21swapper/320:40:123
2770099200,2cyclictest0-21swapper/222:40:122
2770099200,19cyclictest0-21swapper/221:10:122
27699992017,2cyclictest5816-21kworker/u8:123:17:041
27699992017,2cyclictest5816-21kworker/u8:122:44:011
27699992017,2cyclictest32080-21kworker/u8:219:27:041
27699992017,2cyclictest26054-21kworker/u8:120:29:041
27699992017,2cyclictest25955-21kworker/u8:119:11:041
27699992017,2cyclictest21833-21kworker/u8:019:33:041
27699992017,2cyclictest21833-21kworker/u8:019:33:041
27699992017,2cyclictest15795-21kworker/u8:021:48:011
27699992017,2cyclictest11384-21kworker/u8:220:19:031
2769999200,18cyclictest0-21swapper/123:04:041
27701991916,2cyclictest11905-21kworker/u8:023:57:043
2770199190,18cyclictest0-21swapper/321:48:053
2770199190,17cyclictest0-21swapper/322:19:043
2770099190,18cyclictest0-21swapper/220:05:132
27699991916,2cyclictest7847-21kworker/u8:120:03:041
27699991916,2cyclictest3623-21kworker/u8:020:55:041
27699991916,2cyclictest30049-21kworker/u8:222:36:011
27699991916,2cyclictest28093-21kworker/u8:222:04:041
27699991916,2cyclictest26560-21kworker/u8:200:19:041
27699991916,2cyclictest26054-21kworker/u8:120:30:041
27699991916,2cyclictest11491-21kworker/u8:221:17:041
27699991916,2cyclictest11384-21kworker/u8:219:58:051
2769999191,2cyclictest0-21swapper/123:44:041
2769999191,2cyclictest0-21swapper/100:12:051
2770199180,8cyclictest0-21swapper/321:18:043
2770199180,5cyclictest0-21swapper/300:34:013
27699991815,2cyclictest5176-21kworker/u8:123:52:041
27699991815,2cyclictest32074-21kworker/u8:220:48:041
27699991815,2cyclictest21833-21kworker/u8:019:39:041
27699991815,2cyclictest21828-21kworker/u8:021:30:041
2769999180,2cyclictest0-21swapper/122:34:041
2769999180,2cyclictest0-21swapper/122:34:041
2769999180,16cyclictest0-21swapper/100:02:041
27701991714,2cyclictest26560-21kworker/u8:200:08:043
2770199170,5cyclictest0-21swapper/322:10:043
2770099170,2cyclictest0-21swapper/223:00:122
2769999172,2cyclictest0-21swapper/121:36:041
27699991714,2cyclictest7387-21kworker/u8:223:21:041
27699991714,2cyclictest11384-21kworker/u8:220:09:041
2769999170,2cyclictest0-21swapper/123:45:041
2769999170,2cyclictest0-21swapper/122:49:041
2769999170,2cyclictest0-21swapper/120:42:011
2769999170,2cyclictest0-21swapper/119:40:041
2769899171,14cyclictest2874-21processes00:20:190
27701991613,2cyclictest5816-21kworker/u8:123:00:043
2770199161,12cyclictest30830-21munin-node3
2770199160,9cyclictest0-21swapper/323:50:043
2770199160,2cyclictest0-21swapper/323:12:053
2770199160,15cyclictest0-21swapper/319:46:053
27699991613,2cyclictest3623-21kworker/u8:020:51:041
27699991613,2cyclictest25955-21kworker/u8:119:16:051
2769999160,2cyclictest0-21swapper/123:59:041
2769999160,2cyclictest0-21swapper/123:38:011
2769899160,2cyclictest0-21swapper/023:12:050
2770199158,5cyclictest22789-21sh22:27:043
2770199150,8cyclictest0-21swapper/321:21:043
2770199150,3cyclictest12067-21cpuspeed_turbos19:50:133
2770199150,13cyclictest0-21swapper/320:30:163
2770199150,13cyclictest0-21swapper/320:06:053
2770099150,13cyclictest0-21swapper/220:15:172
27699991512,2cyclictest11491-21kworker/u8:221:52:041
27699991511,3cyclictest5222-21kworker/u8:121:44:041
2769999150,2cyclictest0-21swapper/123:08:041
2769999150,2cyclictest0-21swapper/122:52:031
2769999150,2cyclictest0-21swapper/122:25:041
2769999150,2cyclictest0-21swapper/121:25:041
2769999150,2cyclictest0-21swapper/121:07:041
2769999150,2cyclictest0-21swapper/100:20:041
2769899157,6cyclictest11245-21munin-node0
2769899151,3cyclictest0-21swapper/000:02:420
27698991510,3cyclictest13809-21sendmail_mailqu22:50:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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