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2026-06-22 - 00:56

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 Sun Jun 21, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
336106922990,29sleep013-21ksoftirqd/007:05:140
336141522720,8sleep20-21swapper/207:05:192
346657121270,4sleep13056-21PK-Backend12:05:011
343221921030,3sleep00-21swapper/010:25:150
34438582980,2sleep13056-21PK-Backend11:00:021
336085428241,32sleep10-21swapper/107:05:111
336206826343,14sleep30-21swapper/307:06:413
34779982560,4sleep20-21swapper/212:35:182
139099490,4rtkit-daemon1389-21rtkit-daemon11:11:512
34410842480,3chrt3056-21PK-Backend10:50:191
34249202470,2sleep10-21swapper/110:05:151
139099440,4rtkit-daemon1389-21rtkit-daemon08:17:092
34618902400,4sleep03461891-21kernelversion11:50:160
34233292300,13sleep126-21ksoftirqd/110:00:141
336246199270,25cyclictest1389-21rtkit-daemon07:10:130
139099260,4rtkit-daemon1389-21rtkit-daemon11:07:303
139099260,4rtkit-daemon1389-21rtkit-daemon10:35:303
139099260,4rtkit-daemon1389-21rtkit-daemon10:20:482
336247199258,15cyclictest886-21NetworkManager07:59:383
3362471992517,6cyclictest3454192-21cron11:30:003
336246999250,24cyclictest1389-21rtkit-daemon11:49:092
3362464992518,5cyclictest3399872-21cron08:55:001
3362471992420,3cyclictest42-21ksoftirqd/310:20:223
3362471992420,2cyclictest3377078-21ls07:50:003
3362471992416,6cyclictest883-21dbus-daemon10:15:023
3362461992416,6cyclictest3401866-21cron09:00:000
34298702230,4chrt3056-21PK-Backend10:20:100
33851212230,3sleep20-21swapper/208:10:172
336247199239,8cyclictest42-21ksoftirqd/311:15:183
336247199237,3cyclictest3429619-21latency_hist10:20:003
336247199231,9cyclictest3397549-21python308:45:193
3362471992312,7cyclictest42-21ksoftirqd/311:55:013
3362469992315,6cyclictest3371547-21cron07:35:002
336246999230,21cyclictest3403881-21apt09:05:122
336247199225,14cyclictest3412297-21idleruntime-cro09:30:003
336247199225,14cyclictest3412297-21idleruntime-cro09:30:003
3362471992219,2cyclictest3056-21PK-Backend12:16:143
3362471992219,2cyclictest3056-21PK-Backend12:14:523
3362471992219,2cyclictest3056-21PK-Backend09:14:173
3362471992219,2cyclictest3056-21PK-Backend09:03:093
3362471992213,7cyclictest436-20systemd-journal10:30:003
3362471992212,3cyclictest42-21ksoftirqd/311:00:013
336247199220,20cyclictest3056-21PK-Backend11:20:103
336247199220,20cyclictest3056-21PK-Backend09:55:273
336247199220,20cyclictest3056-21PK-Backend09:08:093
336246999220,3cyclictest3415239-21grep09:35:202
336246499220,3cyclictest3056-21PK-Backend12:00:001
3362461992213,7cyclictest3395323-21df_inode08:40:130
34624012210,4sleep13056-21PK-Backend11:50:211
3362471992119,1cyclictest3056-21PK-Backend10:09:203
3362471992119,1cyclictest3056-21PK-Backend09:33:173
3362471992119,1cyclictest3056-21PK-Backend09:17:223
3362471992119,1cyclictest3056-21PK-Backend08:58:093
3362471992119,1cyclictest3056-21PK-Backend07:21:433
3362471992119,1cyclictest0-21swapper/311:48:433
3362471992119,1cyclictest0-21swapper/310:53:483
3362471992119,1cyclictest0-21swapper/310:31:033
3362471992119,1cyclictest0-21swapper/308:05:503
3362471992119,1cyclictest0-21swapper/307:51:103
3362471992112,6cyclictest42-21ksoftirqd/308:15:213
3362471992112,3cyclictest42-21ksoftirqd/312:05:013
336247199211,17cyclictest3415148-21python309:35:193
3362471992111,3cyclictest42-21ksoftirqd/309:50:003
336247199210,20cyclictest3056-21PK-Backend08:26:463
336247199210,20cyclictest0-21swapper/309:53:313
336246999210,20cyclictest0-21swapper/209:48:522
3362464992118,2cyclictest0-21swapper/107:30:211
3362464992115,4cyclictest3366361-21latency_hist07:19:591
3362464992114,6cyclictest3375826-21expr07:45:111
336246499210,20cyclictest3056-21PK-Backend10:46:371
336246499210,19cyclictest3056-21PK-Backend11:05:301
336246499210,19cyclictest3056-21PK-Backend09:50:541
3362461992114,6cyclictest3404746-21swap09:05:220
3362461992113,6cyclictest3434061-21awk10:30:180
336246199210,3cyclictest3470960-21cat12:15:160
336246199210,20cyclictest0-21swapper/009:30:160
336246199210,20cyclictest0-21swapper/007:21:330
34483712200,4sleep13056-21PK-Backend11:10:201
3362471992018,1cyclictest0-21swapper/311:43:503
3362471992018,1cyclictest0-21swapper/311:34:043
3362471992018,1cyclictest0-21swapper/308:22:063
3362471992017,2cyclictest3056-21PK-Backend09:20:273
3362471992015,3cyclictest3448387-21python311:10:203
336247199201,16cyclictest3443549-21awk11:00:003
3362471992011,3cyclictest42-21ksoftirqd/311:35:193
3362471992010,7cyclictest42-21ksoftirqd/312:05:133
336247199200,1cyclictest3056-21PK-Backend07:15:343
336247199200,19cyclictest3056-21PK-Backend12:38:593
336247199200,19cyclictest3056-21PK-Backend12:26:563
336247199200,19cyclictest3056-21PK-Backend12:20:543
336247199200,19cyclictest3056-21PK-Backend08:53:093
336247199200,19cyclictest0-21swapper/309:43:173
336247199200,19cyclictest0-21swapper/308:43:563
336247199200,19cyclictest0-21swapper/308:14:083
336247199200,19cyclictest0-21swapper/307:39:013
336246999205,13cyclictest3391211-21cron08:29:592
3362469992018,1cyclictest0-21swapper/211:09:092
3362469992018,1cyclictest0-21swapper/208:31:262
3362469992018,1cyclictest0-21swapper/208:31:252
3362469992018,1cyclictest0-21swapper/207:46:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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