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2026-04-09 - 23:30

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 Apr 09, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
301622116105,6sleep30-21swapper/307:06:063
304072115104,6sleep10-21swapper/107:09:171
302442113102,6sleep20-21swapper/207:07:092
29760210383,15sleep00-21swapper/007:05:590
236202740,0sleep10-21swapper/111:33:291
290662730,0sleep10-21swapper/108:25:151
260792720,0sleep20-21swapper/209:55:132
49062690,0sleep30-21swapper/307:25:123
30493994427,15cyclictest0-21swapper/212:15:122
285112260,1sleep10-21swapper/111:38:381
3049199256,18cyclictest0-21swapper/011:45:090
3049499220,17cyclictest0-21swapper/311:24:053
30493992116,3cyclictest14164-21diskmemload11:45:102
3049399211,18cyclictest28402-21sh11:05:122
3049299210,4cyclictest0-21swapper/112:24:031
3049299210,4cyclictest0-21swapper/109:59:051
3049299210,4cyclictest0-21swapper/108:46:051
3049499200,15cyclictest0-21swapper/307:16:053
3049299201,2cyclictest207150irq/24-eth110:02:051
3049299200,4cyclictest0-21swapper/112:34:021
3049299200,4cyclictest0-21swapper/111:07:051
134062200,0sleep00-21swapper/011:56:000
30494991916,2cyclictest26552-21kworker/u8:210:40:043
3049499190,18cyclictest0-21swapper/312:16:063
3049499190,18cyclictest0-21swapper/312:05:053
3049499190,18cyclictest0-21swapper/310:35:123
3049499190,14cyclictest0-21swapper/311:12:023
3049499190,14cyclictest0-21swapper/310:25:053
3049299193,3cyclictest0-21swapper/108:04:011
3049299193,2cyclictest0-21swapper/108:31:051
3049299192,2cyclictest0-21swapper/111:26:051
3049299192,2cyclictest0-21swapper/107:51:051
30492991916,2cyclictest3767-21kworker/u8:109:40:011
3049299190,5cyclictest0-21swapper/111:12:061
3049299190,5cyclictest0-21swapper/109:11:051
3049299190,4cyclictest0-21swapper/109:51:051
3049299190,3cyclictest0-21swapper/110:34:041
3049299190,3cyclictest0-21swapper/110:05:041
3049299190,3cyclictest0-21swapper/107:37:041
3049299190,17cyclictest0-21swapper/109:30:051
30491991916,2cyclictest3767-21kworker/u8:109:32:040
3049199190,2cyclictest0-21swapper/012:22:020
295182190,1sleep114164-21diskmemload09:25:141
30494991815,2cyclictest9548-21kworker/u8:112:10:053
3049499180,2cyclictest0-21swapper/312:22:013
3049499180,2cyclictest0-21swapper/311:06:053
3049499180,2cyclictest0-21swapper/308:40:113
3049499180,17cyclictest0-21swapper/311:34:043
3049499180,13cyclictest0-21swapper/312:25:053
3049499180,13cyclictest0-21swapper/311:38:053
3049299183,7cyclictest0-21swapper/110:46:051
3049299183,2cyclictest0-21swapper/109:04:051
3049299182,5cyclictest0-21swapper/108:07:051
3049299181,2cyclictest0-21swapper/107:11:041
3049299181,14cyclictest18201-21munin-node1
3049299180,2cyclictest0-21swapper/111:58:051
3049299180,16cyclictest0-21swapper/111:40:051
3049199180,2cyclictest0-21swapper/011:06:060
30494991714,2cyclictest22667-21kworker/u8:209:20:063
3049499170,2cyclictest0-21swapper/311:48:053
3049499170,12cyclictest0-21swapper/308:52:053
30493991712,3cyclictest24921-21ssh11:35:112
3049299174,11cyclictest0-21swapper/112:29:591
3049299170,2cyclictest0-21swapper/111:23:041
30491991714,2cyclictest22667-21kworker/u8:209:37:050
30494991613,2cyclictest7770-21kworker/u8:010:12:053
30494991613,2cyclictest14874-21kworker/u8:009:45:053
30494991611,4cyclictest0-21swapper/310:04:563
3049499160,2cyclictest0-21swapper/308:59:053
3049299164,10cyclictest221ktimersoftd/112:11:011
3049299161,1cyclictest0-21swapper/107:29:051
30492991611,3cyclictest20070-21ssh10:55:391
3049299160,3cyclictest0-21swapper/110:40:311
3049299160,2cyclictest0-21swapper/110:29:051
3049199160,2cyclictest0-21swapper/011:10:040
3049199160,2cyclictest0-21swapper/008:59:050
30494991512,2cyclictest3767-21kworker/u8:109:56:053
30494991512,2cyclictest31790-21kworker/u8:110:47:053
30494991512,2cyclictest29070-21kworker/u8:009:29:043
30494991512,2cyclictest22667-21kworker/u8:209:19:053
30494991512,2cyclictest20765-21kworker/u8:210:22:063
3049399151,12cyclictest16029-21ssh10:51:142
3049299151,2cyclictest0-21swapper/111:02:051
3049299151,2cyclictest0-21swapper/110:37:051
30492991510,3cyclictest0-21swapper/111:50:121
3049299150,4cyclictest0-21swapper/107:58:061
3049299150,3cyclictest8358-21munin-node1
3049299150,2cyclictest0-21swapper/111:17:051
3049299150,13cyclictest0-21swapper/108:40:161
3049199158,4cyclictest28062-21apt11:05:000
3049199151,3cyclictest0-21swapper/010:02:140
30491991512,2cyclictest26552-21kworker/u8:210:38:050
30491991512,2cyclictest21984-21kworker/u8:208:14:050
30491991512,2cyclictest20765-21kworker/u8:210:16:060
30491991512,2cyclictest20765-21kworker/u8:209:54:050
3049199150,3cyclictest29593-21ssh10:32:020
3049199150,13cyclictest0-21swapper/009:57:020
30494991411,2cyclictest3767-21kworker/u8:109:39:053
30494991411,2cyclictest30700-21kworker/u8:007:14:053
30494991411,2cyclictest26552-21kworker/u8:210:33:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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