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2026-05-21 - 12:28

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 Thu May 21, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
236492117106,6sleep30-21swapper/319:09:293
21898211796,16sleep00-21swapper/019:05:060
23554211091,14sleep10-21swapper/119:08:161
23387211099,6sleep20-21swapper/219:06:072
241892770,0sleep20-21swapper/223:09:042
253372730,1sleep20-21swapper/223:43:552
164672710,0sleep30-21swapper/321:53:363
113972700,0sleep10-21swapper/121:14:071
23716993314,17cyclictest0-21swapper/122:45:101
313172260,0sleep20-21swapper/223:50:122
2371699245,18cyclictest0-21swapper/122:10:111
2371699220,2cyclictest0-21swapper/100:30:101
2371899200,19cyclictest0-21swapper/300:15:103
2371699200,18cyclictest0-21swapper/120:40:101
221712200,0sleep10-21swapper/123:06:021
23717991916,2cyclictest7028-21kworker/u8:022:24:042
2371899181,3cyclictest31435-21munin-run20:50:013
23717991815,2cyclictest3770-21kworker/u8:123:04:052
23717991815,2cyclictest14260-21kworker/u8:122:27:052
190842180,1sleep20-21swapper/200:10:212
23718991714,2cyclictest3770-21kworker/u8:122:59:043
23717991714,2cyclictest7784-21kworker/u8:119:54:052
23717991714,2cyclictest27629-21kworker/u8:100:33:042
23717991714,2cyclictest14151-21kworker/u8:021:19:042
23716991712,3cyclictest0-21swapper/119:50:591
148292170,1sleep30-21swapper/322:25:163
273472161,3sleep227373-21which21:30:202
269462161,3sleep026956-21ssh22:37:560
23717991613,2cyclictest472-21kworker/u8:221:53:052
23717991613,2cyclictest23677-21kworker/u8:223:49:052
23717991613,2cyclictest23677-21kworker/u8:223:49:042
23717991613,2cyclictest23662-21kworker/u8:222:35:052
23717991613,2cyclictest10710-21kworker/u8:023:11:042
2371799160,2cyclictest0-21swapper/200:39:052
2371699161,3cyclictest0-21swapper/123:30:001
2371699161,13cyclictest0-21swapper/122:05:101
2371699160,13cyclictest0-21swapper/119:14:591
23718991512,2cyclictest6714-21kworker/u8:200:05:043
23718991512,2cyclictest28934-21kworker/u8:123:23:043
23718991512,2cyclictest27629-21kworker/u8:100:23:053
2371899151,12cyclictest18963-21munin-node3
23718991510,3cyclictest28648-21kworker/u8:022:41:043
23718991510,3cyclictest0-21swapper/322:03:023
2371899150,13cyclictest5978-21munin-node3
23717991512,2cyclictest27653-21kworker/u8:220:02:052
23717991512,2cyclictest27653-21kworker/u8:219:34:012
23717991512,2cyclictest23521-21kworker/u8:119:17:052
23717991512,2cyclictest22879-21kworker/u8:223:17:052
23717991512,2cyclictest14151-21kworker/u8:021:26:052
2371799150,13cyclictest0-21swapper/222:16:562
2371799150,13cyclictest0-21swapper/221:49:052
2371699152,7cyclictest0-21swapper/120:20:011
2371699151,3cyclictest0-21swapper/121:01:051
23716991511,2cyclictest12890-21apt-get21:50:111
2371599150,13cyclictest0-21swapper/023:26:050
2371599150,13cyclictest0-21swapper/021:55:100
2371599150,11cyclictest0-21swapper/021:28:050
2371899141,3cyclictest3681-21ssh00:28:483
2371899141,2cyclictest0-21swapper/319:55:043
23718991411,2cyclictest3770-21kworker/u8:123:01:053
23718991411,2cyclictest0-21swapper/323:47:063
23718991411,2cyclictest0-21swapper/323:47:053
2371899140,12cyclictest16195-21ssh23:34:373
2371799149,3cyclictest0-21swapper/223:35:162
23717991411,2cyclictest7784-21kworker/u8:119:57:042
23717991411,2cyclictest3770-21kworker/u8:122:48:052
23717991411,2cyclictest31778-21kworker/u8:220:56:022
23717991411,2cyclictest28246-21kworker/u8:121:43:042
23717991411,2cyclictest27989-21kworker/u8:020:44:042
23717991411,2cyclictest27653-21kworker/u8:220:13:042
23717991411,2cyclictest25688-21kworker/u8:022:09:042
23717991411,2cyclictest23662-21kworker/u8:222:53:052
23717991411,2cyclictest23521-21kworker/u8:119:20:042
23717991411,2cyclictest14151-21kworker/u8:021:36:052
23717991411,2cyclictest11365-21kworker/u8:020:22:012
23717991411,2cyclictest0-21swapper/221:24:062
2371799141,10cyclictest8432-21ssh00:00:122
2371799140,2cyclictest0-21swapper/221:00:162
2371799140,13cyclictest0-21swapper/220:25:162
2371699149,3cyclictest16434-21hwlatdetect20:10:141
2371699142,6cyclictest0-21swapper/122:05:001
2371699141,3cyclictest0-21swapper/100:16:231
23716991410,2cyclictest0-21swapper/119:55:511
2371699140,13cyclictest0-21swapper/121:27:161
2371699140,12cyclictest7199-21diskmemload21:23:111
2371699140,12cyclictest28098-21sh21:30:471
2371699140,12cyclictest15872-21ssh00:07:091
2371699140,12cyclictest0-21swapper/121:39:551
2371599140,12cyclictest12885-21munin-node0
202752140,2sleep07199-21diskmemload23:38:320
36592130,2sleep00-21swapper/022:14:150
2371899138,4cyclictest27920-21ssh21:30:323
23718991310,2cyclictest472-21kworker/u8:222:15:043
23718991310,2cyclictest3794-21kworker/u8:019:46:053
23718991310,2cyclictest31039-21kworker/u8:023:50:013
23718991310,2cyclictest27653-21kworker/u8:220:15:053
23718991310,2cyclictest27653-21kworker/u8:219:26:053
23718991310,2cyclictest18145-21kworker/u8:123:56:023
23718991310,2cyclictest11365-21kworker/u8:020:26:053
23718991310,2cyclictest0-21swapper/323:10:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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