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2026-04-30 - 16:01

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 Thu Apr 30, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33094862980,4sleep00-21swapper/009:00:120
33856852960,2sleep00-21swapper/012:00:220
33814982820,3sleep20-21swapper/211:50:122
139099800,70rtkit-daemon0-21swapper/107:07:031
326977727844,9sleep30-21swapper/307:09:093
326980927051,14sleep00-21swapper/007:09:340
326981626543,14sleep20-21swapper/207:09:412
33193842460,4sleep13056-21PK-Backend09:30:001
33750612420,2sleep30-21swapper/311:30:213
3269990994036,3cyclictest34-21ksoftirqd/210:05:282
33070282390,3sleep13056-21PK-Backend08:55:001
33874772380,2sleep00-21swapper/012:05:180
3269990993430,3cyclictest34-21ksoftirqd/210:04:592
3269986992913,14cyclictest922-21systemd-logind10:05:520
3269989992824,3cyclictest26-21ksoftirqd/110:05:351
3269990992719,6cyclictest3364082-21hddtemp_smartct11:00:162
3269989992718,7cyclictest883-21dbus-daemon10:03:481
139099270,4rtkit-daemon1389-21rtkit-daemon07:38:221
3269992992615,8cyclictest436-20systemd-journal10:55:333
139099260,4rtkit-daemon1389-21rtkit-daemon08:22:480
326999299257,6cyclictest922-21systemd-logind10:04:223
3269992992519,4cyclictest1015-21gdbus10:05:313
326999299241,20cyclictest3316513-21hddtemp_smartct09:20:203
3269990992419,4cyclictest34-21ksoftirqd/210:43:572
3269990992419,4cyclictest34-21ksoftirqd/210:43:562
3269990992418,4cyclictest922-21systemd-logind08:44:592
326998999240,9cyclictest33520432ntpq10:25:181
3269990992317,4cyclictest34-21ksoftirqd/210:57:102
3269990992311,10cyclictest34-21ksoftirqd/209:55:012
3269986992314,7cyclictest883-21dbus-daemon10:03:520
3269992992211,5cyclictest3277997-21cat07:30:153
3269990992220,1cyclictest0-21swapper/212:13:382
3269990992220,1cyclictest0-21swapper/211:25:302
3269990992220,1cyclictest0-21swapper/211:19:572
3269990992220,1cyclictest0-21swapper/210:47:462
3269990992218,3cyclictest34-21ksoftirqd/210:30:012
3269990992215,5cyclictest1-21systemd11:50:012
326999099220,21cyclictest0-21swapper/208:22:132
326999099220,19cyclictest0-21swapper/207:45:082
3269989992220,1cyclictest3056-21PK-Backend07:59:511
3269986992220,1cyclictest0-21swapper/011:26:070
3269986992220,1cyclictest0-21swapper/011:22:490
3269986992220,1cyclictest0-21swapper/010:57:480
139099220,4rtkit-daemon1389-21rtkit-daemon10:14:200
33054652210,11sleep13056-21PK-Backend08:45:181
3269992992114,4cyclictest3315242-21python309:15:213
3269992992114,4cyclictest3271654-21idleruntime-cro07:14:593
3269992992113,6cyclictest3318016-21expr09:25:133
326999299211,16cyclictest3366276-21python311:05:213
326999299210,20cyclictest3056-21PK-Backend09:43:173
326999299210,19cyclictest3279809-21/usr/sbin/munin07:35:143
3269990992119,1cyclictest0-21swapper/212:21:002
3269990992119,1cyclictest0-21swapper/211:44:512
3269990992119,1cyclictest0-21swapper/210:13:042
3269990992119,1cyclictest0-21swapper/209:45:262
3269990992119,1cyclictest0-21swapper/209:26:482
3269990992119,1cyclictest0-21swapper/209:05:192
3269990992119,1cyclictest0-21swapper/208:45:312
3269990992119,1cyclictest0-21swapper/208:28:142
3269990992119,1cyclictest0-21swapper/207:43:332
3269990992119,1cyclictest0-21swapper/207:11:152
3269990992117,3cyclictest34-21ksoftirqd/208:36:182
3269990992116,3cyclictest3279081-21ls07:35:012
3269990992115,4cyclictest2156-21gnome-shell11:06:082
3269990992114,5cyclictest3291669-21sshd08:08:462
326999099210,20cyclictest0-21swapper/210:22:322
326999099210,20cyclictest0-21swapper/208:30:512
326999099210,20cyclictest0-21swapper/208:19:352
3269989992119,1cyclictest3056-21PK-Backend11:23:251
3269989992119,1cyclictest3056-21PK-Backend08:28:581
326998999210,20cyclictest3056-21PK-Backend11:17:161
326998999210,19cyclictest3056-21PK-Backend07:54:311
3269986992119,1cyclictest0-21swapper/012:11:560
3269986992119,1cyclictest0-21swapper/011:59:130
3269986992119,1cyclictest0-21swapper/011:53:520
3269986992119,1cyclictest0-21swapper/011:47:290
3269986992119,1cyclictest0-21swapper/011:10:050
3269986992119,1cyclictest0-21swapper/011:06:000
3269986992119,1cyclictest0-21swapper/010:54:430
3269986992119,1cyclictest0-21swapper/010:49:360
3269986992119,1cyclictest0-21swapper/008:50:340
3269986992119,1cyclictest0-21swapper/008:47:570
3269986992119,1cyclictest0-21swapper/008:33:290
3269986992119,1cyclictest0-21swapper/008:12:280
3269986992119,1cyclictest0-21swapper/007:55:450
3269986992119,1cyclictest0-21swapper/007:42:270
3269986992119,1cyclictest0-21swapper/007:32:120
3269986992119,1cyclictest0-21swapper/007:16:580
3269986992117,3cyclictest0-21swapper/010:35:180
326998699210,7cyclictest3290037-21cron08:04:590
326998699210,1cyclictest3056-21PK-Backend08:40:200
326998699210,1cyclictest0-21swapper/007:49:230
326998699210,19cyclictest3056-21PK-Backend07:51:460
326998699210,19cyclictest0-21swapper/011:40:060
326998699210,19cyclictest0-21swapper/009:10:210
139099210,18rtkit-daemon2637-21gmain09:36:040
139099210,18rtkit-daemon1997-21gvfs-afc-volume09:42:050
139099210,14rtkit-daemon0-21swapper/310:51:143
33939032200,4sleep1251rcuc/112:25:121
326999299206,12cyclictest0-21swapper/308:55:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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