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2026-07-30 - 05:57

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 Jul 30, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22028211294,12sleep20-21swapper/219:08:292
21829211188,16sleep10-21swapper/119:06:041
21937210897,6sleep30-21swapper/319:07:193
20357210594,6sleep00-21swapper/019:05:070
150142700,0sleep10-21swapper/121:51:001
22175993918,19cyclictest29375-21sh00:20:121
2217499360,18cyclictest0-21swapper/023:20:120
2217599243,12cyclictest10176-21latency_hist20:00:001
22175992312,3cyclictest0-21swapper/120:10:111
2217599221,7cyclictest0-21swapper/122:20:001
2217499220,17cyclictest0-21swapper/022:39:040
2217799212,2cyclictest0-21swapper/323:50:053
2217799211,18cyclictest0-21swapper/320:50:123
22176992118,2cyclictest0-21swapper/223:45:112
22176992117,2cyclictest0-21swapper/221:45:122
2217599210,12cyclictest0-21swapper/121:36:001
2217499210,16cyclictest0-21swapper/020:25:040
2217799200,18cyclictest0-21swapper/322:55:153
2217799200,18cyclictest0-21swapper/322:55:143
2217699200,3cyclictest0-21swapper/222:45:042
2217499200,16cyclictest0-21swapper/021:43:050
2217499200,15cyclictest0-21swapper/022:44:050
2217499200,15cyclictest0-21swapper/022:27:050
2217499200,15cyclictest0-21swapper/019:22:030
2217799190,4cyclictest0-21swapper/322:30:053
22175991910,2cyclictest0-21swapper/121:21:311
2217499192,2cyclictest0-21swapper/022:30:050
22174991916,2cyclictest20470-21kworker/u8:121:57:040
2217499190,14cyclictest0-21swapper/023:45:040
2217499190,14cyclictest0-21swapper/023:27:040
2217499190,14cyclictest0-21swapper/020:38:010
2217499190,14cyclictest0-21swapper/000:26:050
2217499190,14cyclictest0-21swapper/000:02:050
2217799182,2cyclictest8475-21ssh22:18:063
2217799182,2cyclictest19510-21ssh00:10:023
22177991815,2cyclictest12136-21kworker/u8:200:18:053
2217599189,2cyclictest24167-21apt-get20:35:071
2217499180,2cyclictest0-21swapper/023:50:040
2217499180,13cyclictest0-21swapper/022:16:010
2217499180,13cyclictest0-21swapper/022:03:050
2217499180,13cyclictest0-21swapper/021:33:050
2217499180,13cyclictest0-21swapper/020:41:050
2217799172,2cyclictest0-21swapper/321:23:043
2217799171,2cyclictest0-21swapper/320:21:043
2217599171,7cyclictest4562-21gdm-simple-gree00:14:591
2217599170,3cyclictest0-21swapper/121:27:521
2217499171,2cyclictest0-21swapper/022:09:050
2217499170,12cyclictest0-21swapper/023:40:040
22177991613,2cyclictest27148-21kworker/u8:123:56:023
2217799161,2cyclictest0-21swapper/322:22:043
2217799160,3cyclictest22018-21sh21:25:183
2217799160,2cyclictest0-21swapper/323:19:053
2217799160,2cyclictest0-21swapper/320:26:043
2217599161,13cyclictest20634-21apt-get23:05:061
2217599161,13cyclictest20634-21apt-get23:05:051
2217599161,13cyclictest0-21swapper/120:00:121
2217599160,14cyclictest0-21swapper/122:44:201
22174991613,2cyclictest9262-21kworker/u8:023:17:040
2217499160,2cyclictest0-21swapper/022:22:050
2217499160,2cyclictest0-21swapper/020:21:030
2217499160,2cyclictest0-21swapper/020:00:040
2217499160,2cyclictest0-21swapper/000:10:020
2217499160,15cyclictest0-21swapper/023:32:020
2217499160,15cyclictest0-21swapper/022:57:050
2217499160,15cyclictest0-21swapper/022:57:040
2217499160,15cyclictest0-21swapper/020:47:040
2217799151,2cyclictest0-21swapper/322:00:153
2217799150,3cyclictest19596-21munin-node3
22176991510,3cyclictest0-21swapper/221:05:152
2217599158,5cyclictest11651-21ssh21:48:121
2217599152,7cyclictest0-21swapper/123:40:011
2217599151,3cyclictest0-21swapper/100:05:551
22175991511,2cyclictest0-21swapper/123:00:141
22175991510,3cyclictest11660-21diskstats21:15:121
22175991510,3cyclictest10654-21iostat00:00:181
2217599150,3cyclictest0-21swapper/121:56:101
2217599150,13cyclictest0-21swapper/122:20:501
2217499151,2cyclictest0-21swapper/021:23:040
2217499151,12cyclictest24401-21apt-get19:15:130
2217499150,2cyclictest0-21swapper/000:17:040
2217499150,14cyclictest0-21swapper/021:39:040
2217499150,14cyclictest0-21swapper/020:05:040
2217499150,13cyclictest22017-21munin-node0
22177991411,2cyclictest15318-21kworker/u8:222:07:053
22177991411,2cyclictest0-21swapper/323:20:383
22177991410,2cyclictest26438-21kworker/u8:020:55:043
22177991410,2cyclictest0-21swapper/320:45:053
2217799140,2cyclictest0-21swapper/323:01:083
2217799140,2cyclictest0-21swapper/321:42:583
2217799140,12cyclictest3899-21ssh22:46:253
2217699140,13cyclictest0-21swapper/220:35:262
2217699140,12cyclictest6069-21diskmemload23:39:462
2217699140,12cyclictest11390-21ssh00:00:532
2217699140,12cyclictest0-21swapper/221:33:462
2217599142,7cyclictest0-21swapper/121:05:001
2217599142,6cyclictest0-21swapper/122:30:001
2217599142,6cyclictest0-21swapper/119:55:011
22175991411,2cyclictest29278-21ssh21:33:111
22175991411,2cyclictest0-21swapper/123:57:001
22175991411,2cyclictest0-21swapper/123:44:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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