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2026-04-20 - 21:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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 100 highest latencies:
System rackeslot5s.osadl.org (updated Mon Apr 20, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19339992720,6cyclictest8847-21apt-config12:15:013
1933999270,25cyclictest313-21systemd-journal11:35:013
1933999270,1cyclictest29051-21dump-pmu-power12:35:003
19339992622,3cyclictest14295-21diskmemload09:37:513
19325992624,2cyclictest0-21swapper/012:29:520
19325992623,2cyclictest0-21swapper/011:27:450
19325992620,5cyclictest11090-21rm11:13:360
1932599260,25cyclictest0-21swapper/011:49:450
1932599260,21cyclictest14295-21diskmemload12:15:010
1932599260,1cyclictest0-21swapper/011:35:010
1933999250,1cyclictest0-21swapper/310:27:113
19328992523,1cyclictest29389-21ssh12:02:591
1932899250,2cyclictest26262-21rm11:27:441
1932899250,24cyclictest19253-21ssh09:14:421
19325992523,2cyclictest0-21swapper/010:23:020
19325992521,3cyclictest5937-21sh10:35:180
19325992521,3cyclictest0-21swapper/011:01:010
1932599250,24cyclictest0-21swapper/012:08:520
1932599250,21cyclictest28415-21sh10:25:380
1932599250,21cyclictest18658-21ssh11:20:120
1932599250,1cyclictest8436-21ssh10:06:030
1932599250,1cyclictest0-21swapper/012:35:530
1932599250,0cyclictest2123-21ssh09:29:070
1932599250,0cyclictest0-21swapper/011:38:220
1932599250,0cyclictest0-21swapper/011:16:290
1932599250,0cyclictest0-21swapper/009:24:150
19339992420,3cyclictest0-21swapper/312:25:383
19339992420,3cyclictest0-21swapper/312:06:033
19339992420,3cyclictest0-21swapper/311:44:273
19339992420,3cyclictest0-21swapper/311:05:543
19339992419,4cyclictest0-21swapper/311:55:073
1933999240,24cyclictest14295-21diskmemload11:35:033
1933999240,23cyclictest31294-21sh09:57:053
1933999240,23cyclictest11703-21apt-get08:00:063
1933999240,23cyclictest10897-21perf10:10:003
1933999240,23cyclictest0-21swapper/311:50:243
1933999240,23cyclictest0-21swapper/311:01:043
1933999240,23cyclictest0-21swapper/310:56:463
1933999240,23cyclictest0-21swapper/310:21:303
1933999240,20cyclictest0-21swapper/311:16:293
1933999240,20cyclictest0-21swapper/309:15:143
19333992423,1cyclictest9129-21ssh10:40:012
1933399240,24cyclictest14295-21diskmemload12:00:332
1933399240,23cyclictest15150-21ssh09:40:342
1933399240,1cyclictest31223-21sh11:32:422
1933399240,1cyclictest26998-21cron08:30:012
1933399240,0cyclictest0-21swapper/211:58:452
19328992424,0cyclictest0-21swapper/111:52:261
19328992423,1cyclictest14295-21diskmemload11:39:041
19328992421,2cyclictest974-21ssh09:27:161
19328992421,2cyclictest21793-21cron08:20:011
1932899240,23cyclictest6166-21sh12:11:231
19325992422,2cyclictest0-21swapper/009:54:420
1932599242,21cyclictest62550irq/127-eno112:12:140
19325992422,1cyclictest3802-21cron10:35:010
19325992422,1cyclictest14295-21diskmemload11:44:010
19325992421,2cyclictest13578-21sh10:44:250
19325992420,3cyclictest0-21swapper/012:03:100
19325992420,3cyclictest0-21swapper/009:47:180
19325992419,4cyclictest17546-21ssh10:47:400
1932599241,23cyclictest62550irq/127-eno110:59:020
1932599240,24cyclictest0-21swapper/010:54:300
1932599240,23cyclictest4730-21sh10:03:110
1932599240,23cyclictest22454-21ssh09:16:410
1932599240,23cyclictest14295-21diskmemload12:21:010
1932599240,23cyclictest0-21swapper/010:15:350
1932599240,23cyclictest0-21swapper/009:38:250
1932599240,1cyclictest0-21swapper/009:55:130
1932599240,0cyclictest14295-21diskmemload11:05:540
19339992321,1cyclictest14864-21cstates09:10:073
19339992320,3cyclictest0-21swapper/310:30:253
19339992320,3cyclictest0-21swapper/309:20:033
19339992320,2cyclictest14295-21diskmemload09:41:003
19339992320,2cyclictest10317-21rm10:40:113
19339992318,5cyclictest0-21swapper/311:20:053
1933999230,2cyclictest28049-21dump-pmu-power09:55:013
1933999230,2cyclictest16599-21ssh12:21:183
1933999230,23cyclictest0-21swapper/312:00:083
1933999230,23cyclictest0-21swapper/310:10:273
1933999230,22cyclictest16325-21sh10:45:403
1933999230,22cyclictest0-21swapper/312:11:463
1933999230,22cyclictest0-21swapper/310:15:523
1933999230,22cyclictest0-21swapper/309:25:513
1933999230,0cyclictest0-21swapper/310:38:043
19333992323,0cyclictest0-21swapper/212:38:102
19333992323,0cyclictest0-21swapper/212:17:362
19333992323,0cyclictest0-21swapper/209:11:592
19333992322,1cyclictest19222-1kworker/u9:110:56:342
19333992321,1cyclictest23480-21ssh09:18:242
19333992320,2cyclictest18295-21ssh10:15:382
1933399230,23cyclictest8068-21ssh12:14:332
1933399230,23cyclictest14295-21diskmemload10:30:252
1933399230,23cyclictest0-21swapper/212:33:122
1933399230,23cyclictest0-21swapper/211:47:152
1933399230,23cyclictest0-21swapper/211:08:312
1933399230,23cyclictest0-21swapper/211:00:452
1933399230,23cyclictest0-21swapper/210:45:212
1933399230,22cyclictest8015-21ssh09:35:022
1933399230,22cyclictest2122-21ssh12:07:592
1933399230,22cyclictest14295-21diskmemload09:47:372
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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