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2025-09-18 - 17:06

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 Sep 18, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23401211895,18sleep30-21swapper/307:08:183
23258211393,15sleep00-21swapper/007:06:280
23220211192,13sleep20-21swapper/207:05:572
23497210486,13sleep10-21swapper/107:09:331
133812740,0sleep30-21swapper/312:00:493
39292710,0sleep20-21swapper/210:45:152
48212280,1sleep00-21swapper/012:25:270
2356599260,24cyclictest0-21swapper/211:00:112
2356499241,21cyclictest7619-21diskmemload11:55:131
60072230,0sleep10-21swapper/109:40:261
2356499222,18cyclictest332250irq/24-eth112:15:121
2356599211,18cyclictest0-21swapper/209:05:122
2356499211,2cyclictest0-21swapper/111:40:131
2356399210,2cyclictest0-21swapper/007:55:150
23566992017,2cyclictest24422-21kworker/u8:110:08:043
23566992017,2cyclictest18356-21kworker/u8:210:00:053
23566992016,2cyclictest4864-21kworker/u8:209:45:053
2356599200,2cyclictest0-21swapper/209:35:142
2356499200,2cyclictest0-21swapper/110:40:121
2356499200,2cyclictest0-21swapper/110:00:121
2356499200,2cyclictest0-21swapper/107:45:111
2356699190,2cyclictest0-21swapper/307:45:123
2356599190,17cyclictest0-21swapper/208:15:122
23563991915,2cyclictest5129-21runrttasks07:15:110
201242190,1sleep20-21swapper/209:21:512
108082190,1sleep121-21rcuc/109:12:281
23566991815,2cyclictest15585-21kworker/u8:008:53:053
23566991815,2cyclictest13151-21kworker/u8:211:48:053
80372170,0sleep20-21swapper/211:55:262
23566991714,2cyclictest24513-21kworker/u8:211:07:053
23566991714,2cyclictest12833-21kworker/u8:109:52:053
23566991714,2cyclictest12621-21kworker/u8:111:16:043
2356499171,14cyclictest1538-21apt-get10:10:101
2356499170,15cyclictest0-21swapper/109:32:411
23566991613,2cyclictest9047-21kworker/u8:109:14:063
23566991613,2cyclictest8383-21kworker/u8:212:34:043
23566991613,2cyclictest6040-21kworker/u8:010:52:053
23566991613,2cyclictest29905-21kworker/u8:011:37:053
23566991613,2cyclictest24422-21kworker/u8:110:20:023
23566991613,2cyclictest24422-21kworker/u8:110:17:053
23566991613,2cyclictest20694-21kworker/u8:009:59:043
23566991613,2cyclictest20694-21kworker/u8:009:41:043
23566991611,3cyclictest26103-21ssh12:15:123
2356699160,2cyclictest0-21swapper/308:55:123
2356499160,14cyclictest0-21swapper/109:25:201
58192151,3sleep05982-21aten2.4-expect09:05:140
23566991512,2cyclictest8250-21kworker/u8:111:23:053
23566991512,2cyclictest782-21kworker/u8:011:53:053
23566991512,2cyclictest5773-21kworker/u8:208:08:043
23566991512,2cyclictest27347-21kworker/u8:007:32:033
23566991512,2cyclictest25464-21kworker/u8:010:38:063
23566991512,2cyclictest20694-21kworker/u8:009:38:053
23566991512,2cyclictest19539-21kworker/u8:310:58:053
23566991512,2cyclictest19539-21kworker/u8:310:58:043
23566991512,2cyclictest15585-21kworker/u8:008:42:043
23566991512,2cyclictest11711-21kworker/u8:012:11:053
23566991510,3cyclictest0-21swapper/310:25:093
23566991510,3cyclictest0-21swapper/308:25:233
23566991510,3cyclictest0-21swapper/308:25:233
2356699150,13cyclictest0-21swapper/307:10:183
2356599151,12cyclictest19830-21ssh12:08:182
2356599151,12cyclictest13063-21cpuspeed_turbos09:15:172
23565991510,3cyclictest2369-21sed11:50:172
23565991510,3cyclictest0-21swapper/212:26:412
2356599150,2cyclictest0-21swapper/210:11:432
2356599150,13cyclictest0-21swapper/208:25:122
2356599150,13cyclictest0-21swapper/208:25:122
23564991510,3cyclictest4994-21sh12:25:291
2356499150,14cyclictest0-21swapper/112:06:591
2356499150,13cyclictest7619-21diskmemload10:45:191
2356499150,13cyclictest0-21swapper/111:11:301
2356399152,8cyclictest20924-21ssh12:10:000
2356399152,8cyclictest0-21swapper/011:15:010
2356399152,7cyclictest0-21swapper/008:40:010
2356399150,7cyclictest0-21swapper/011:22:040
2356399150,3cyclictest19405-21ssh09:55:120
157912150,3sleep315897-21awk11:30:203
2356699149,3cyclictest0-21swapper/310:45:183
23566991411,2cyclictest8250-21kworker/u8:111:27:053
23566991411,2cyclictest5926-21kworker/u8:009:16:053
23566991411,2cyclictest5926-21kworker/u8:009:09:043
23566991411,2cyclictest30821-21kworker/u8:210:10:023
23566991411,2cyclictest27347-21kworker/u8:007:22:043
23566991411,2cyclictest24513-21kworker/u8:211:10:053
23566991411,2cyclictest24422-21kworker/u8:110:31:043
23566991411,2cyclictest20694-21kworker/u8:009:25:043
23566991411,2cyclictest15585-21kworker/u8:008:48:053
23566991411,2cyclictest14916-21kworker/u8:209:20:053
23566991411,2cyclictest11711-21kworker/u8:012:09:043
23566991411,2cyclictest0-21swapper/312:29:273
2356699140,2cyclictest26519-21ssh11:41:063
23565991411,2cyclictest11450-21kworker/u8:108:00:062
23565991411,2cyclictest0-21swapper/211:24:332
23565991411,2cyclictest0-21swapper/210:57:122
23565991411,2cyclictest0-21swapper/210:57:112
23565991411,2cyclictest0-21swapper/210:15:232
23565991411,2cyclictest0-21swapper/210:04:232
2356599140,2cyclictest0-21swapper/212:16:232
2356599140,2cyclictest0-21swapper/207:55:152
2356599140,13cyclictest0-21swapper/209:33:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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