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2026-08-17 - 19:39

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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 rackcslot7s.osadl.org (updated Mon Aug 17, 2026 12:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
201029423220,18sleep00-21swapper/007:05:280
210888621260,2sleep20-21swapper/211:45:222
212083421080,2sleep30-21swapper/312:20:143
204541521080,3sleep00-21swapper/008:45:230
139099850,52rtkit-daemon0-21swapper/207:09:392
201053127942,14sleep30-21swapper/307:07:293
201061726444,14sleep10-21swapper/107:08:371
20783242410,2sleep30-21swapper/310:20:133
20702042390,4sleep13056-21PK-Backend09:55:401
20784442380,3sleep20-21swapper/210:20:172
20640282290,11sleep013-21ksoftirqd/009:40:170
139099270,4rtkit-daemon1389-21rtkit-daemon07:43:250
139099260,3rtkit-daemon1389-21rtkit-daemon12:16:401
2010862992520,3cyclictest2114971-21apt12:05:131
2010862992518,5cyclictest2064385-21uname09:40:201
139099250,4rtkit-daemon1389-21rtkit-daemon08:59:151
21054952240,3sleep00-21swapper/011:35:210
2010867992413,8cyclictest2084263-21seq10:35:223
2010862992414,8cyclictest2111477-21/usr/sbin/munin11:55:131
2010867992311,10cyclictest2018214-21cron07:30:013
201086799230,21cyclictest3056-21PK-Backend11:35:253
201086799222,5cyclictest2068220-21python309:50:183
2010867992220,1cyclictest0-21swapper/312:06:213
2010867992220,1cyclictest0-21swapper/308:01:033
2010867992220,1cyclictest0-21swapper/307:10:333
2010867992219,2cyclictest3056-21PK-Backend11:46:533
2010867992219,1cyclictest3056-21PK-Backend09:39:383
2010867992215,5cyclictest2042548-21cron08:39:593
201086799220,21cyclictest3056-21PK-Backend11:22:333
201086799220,20cyclictest3056-21PK-Backend11:51:333
201086799220,20cyclictest3056-21PK-Backend08:25:443
201086799220,20cyclictest3056-21PK-Backend08:15:373
2010864992217,3cyclictest2046296-21apt08:50:112
2010864992213,8cyclictest2041650-21load08:35:172
2010862992219,2cyclictest3056-21PK-Backend09:26:411
2010862992214,6cyclictest2117281-21memory12:10:171
201086299220,20cyclictest3056-21PK-Backend10:20:151
201085899221,19cyclictest2104019-21nm-dispatcher11:31:400
201085899221,18cyclictest2114712-21idleruntime-cro12:05:010
139099220,4rtkit-daemon1389-21rtkit-daemon11:21:210
139099220,4rtkit-daemon1389-21rtkit-daemon10:36:560
2010867992119,1cyclictest3056-21PK-Backend12:17:493
2010867992119,1cyclictest3056-21PK-Backend11:44:103
2010867992119,1cyclictest3056-21PK-Backend08:58:093
2010867992119,1cyclictest0-21swapper/311:15:113
2010867992119,1cyclictest0-21swapper/309:31:273
2010867992119,1cyclictest0-21swapper/309:19:323
2010867992119,1cyclictest0-21swapper/309:01:393
2010867992118,2cyclictest3056-21PK-Backend11:26:393
201086799211,7cyclictest2076031-21latency_hist10:15:013
2010867992115,3cyclictest2081218-21cron10:29:593
201086799211,19cyclictest0-21swapper/311:11:053
201086799210,20cyclictest0-21swapper/310:52:453
201086799210,20cyclictest0-21swapper/310:04:263
201086799210,19cyclictest3056-21PK-Backend12:37:433
201086799210,19cyclictest3056-21PK-Backend11:02:533
201086499210,20cyclictest0-21swapper/212:39:002
201086499210,20cyclictest0-21swapper/211:13:492
2010862992119,1cyclictest3056-21PK-Backend10:09:351
2010862992119,1cyclictest3056-21PK-Backend09:19:381
2010862992119,1cyclictest3056-21PK-Backend09:04:441
2010862992119,1cyclictest3056-21PK-Backend07:29:001
2010862992119,1cyclictest0-21swapper/111:54:181
2010862992119,1cyclictest0-21swapper/111:02:551
2010862992119,1cyclictest0-21swapper/108:52:481
2010862992119,1cyclictest0-21swapper/108:41:401
2010862992119,1cyclictest0-21swapper/108:38:091
2010862992119,1cyclictest0-21swapper/108:22:541
2010862992119,1cyclictest0-21swapper/107:12:041
2010862992118,2cyclictest3056-21PK-Backend09:13:581
201086299210,20cyclictest3056-21PK-Backend11:05:371
201086299210,20cyclictest0-21swapper/111:42:481
201086299210,19cyclictest3056-21PK-Backend10:37:461
201086299210,19cyclictest3056-21PK-Backend10:14:131
201086299210,19cyclictest3056-21PK-Backend09:45:481
201086299210,19cyclictest3056-21PK-Backend09:21:481
201086299210,19cyclictest3056-21PK-Backend07:55:571
201086299210,19cyclictest3056-21PK-Backend07:53:471
201086299210,19cyclictest3056-21PK-Backend07:39:081
201086299210,19cyclictest2123785-21sed12:30:001
2010858992119,1cyclictest0-21swapper/012:22:240
2010858992119,1cyclictest0-21swapper/012:16:220
2010858992119,1cyclictest0-21swapper/011:51:550
2010858992119,1cyclictest0-21swapper/011:47:150
2010858992119,1cyclictest0-21swapper/011:07:080
2010858992119,1cyclictest0-21swapper/010:46:450
2010858992119,1cyclictest0-21swapper/009:32:500
139099210,3rtkit-daemon1389-21rtkit-daemon10:32:150
139099210,3rtkit-daemon1389-21rtkit-daemon08:00:170
139099210,3rtkit-daemon1389-21rtkit-daemon07:55:120
2010867992018,1cyclictest3056-21PK-Backend12:04:583
2010867992018,1cyclictest3056-21PK-Backend08:50:323
2010867992018,1cyclictest3056-21PK-Backend08:23:013
2010867992018,1cyclictest0-21swapper/311:06:583
2010867992018,1cyclictest0-21swapper/309:59:463
2010867992018,1cyclictest0-21swapper/309:48:383
2010867992018,1cyclictest0-21swapper/308:09:353
2010867992018,1cyclictest0-21swapper/307:51:313
2010867992018,1cyclictest0-21swapper/307:23:463
2010867992017,2cyclictest3056-21PK-Backend11:34:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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