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2026-08-02 - 09:41

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Sun Aug 02, 2026 00:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9371862480,1sleep1937188-21cat21:23:011
804420994839,6cyclictest846348-21latency_hist19:50:001
804420994536,6cyclictest999809-21latency_hist22:25:011
804415994538,5cyclictest1029789-21cp22:55:010
804415994538,4cyclictest804288-21kworker/u8:0+flush-8:020:27:550
10497292450,2sleep239-21ksoftirqd/223:13:112
804420994439,3cyclictest1065015-21latency_hist23:30:011
10395782430,2sleep3481ktimers/323:03:093
804415994234,6cyclictest1134245-21latency_hist00:40:000
804420994121,17cyclictest275-21systemd-journal00:00:001
804420994024,14cyclictest846791-21/usr/sbin/munin19:53:081
804420994023,15cyclictest871523-21/usr/sbin/munin20:18:061
804415994031,6cyclictest275-21systemd-journal21:05:000
804420993930,6cyclictest275-21systemd-journal19:20:001
79964823921,12sleep10-21swapper/119:05:561
80442099388,19cyclictest0-21swapper/122:19:041
804420993825,10cyclictest275-21systemd-journal20:21:421
80442099379,20cyclictest0-21swapper/122:00:391
80441599371,30cyclictest1-21systemd21:21:410
80442099363,5cyclictest0-21swapper/122:37:521
80442099363,4cyclictest0-21swapper/120:52:541
804420993624,9cyclictest275-21systemd-journal23:13:411
804420993610,13cyclictest0-21swapper/119:21:061
804415993630,4cyclictest804288-21kworker/u8:0+flush-8:020:12:560
804415993630,4cyclictest1074893-21sh23:40:000
80442099354,6cyclictest0-21swapper/121:37:501
80442099353,5cyclictest0-21swapper/100:32:511
804420993526,7cyclictest950127-21latency_hist21:35:011
804415993530,4cyclictest804288-21kworker/u8:0+flush-8:019:20:010
80442099344,5cyclictest0-21swapper/121:52:531
80442099343,7cyclictest0-21swapper/121:02:511
80442099343,6cyclictest0-21swapper/119:27:511
804420993419,13cyclictest0-21swapper/122:27:531
804420993410,22cyclictest275-21systemd-journal23:20:001
804420993410,11cyclictest0-21swapper/120:06:081
804415993430,3cyclictest1040067-21apt-key23:05:010
804415993427,5cyclictest969972-21kworker/u8:2+events_unbound22:38:110
804415993420,12cyclictest831221-21kworker/u8:1+flush-8:020:53:110
80442099339,21cyclictest881470-21cut20:27:531
80442099333,5cyclictest0-21swapper/123:22:531
80442099333,5cyclictest0-21swapper/123:02:521
80442099333,5cyclictest0-21swapper/122:42:531
80442099333,5cyclictest0-21swapper/100:22:521
80442099333,5cyclictest0-21swapper/100:17:501
804420993325,6cyclictest970578-21/usr/sbin/munin21:58:081
804420993320,11cyclictest0-21swapper/121:00:011
7995972334,10sleep20-21swapper/219:05:182
80442099323,4cyclictest0-21swapper/120:32:501
80442099323,4cyclictest0-21swapper/119:37:491
804420993228,2cyclictest831443-21idleruntime-cro19:35:001
804420993217,13cyclictest1099246-21switchtime00:03:111
804415993221,8cyclictest275-21systemd-journal19:35:010
804422993124,5cyclictest1124816-21apt-get00:32:502
80442099316,12cyclictest0-21swapper/100:11:341
80442099313,5cyclictest0-21swapper/121:27:521
80442099313,5cyclictest0-21swapper/120:12:521
80442099312,11cyclictest1100127-21apt-get00:07:521
804420993118,11cyclictest0-21swapper/120:43:091
804420993115,14cyclictest1029458-21unixbench_multi22:53:111
804420993112,17cyclictest905464-21unixbench_singl20:48:131
804420993112,17cyclictest905464-21unixbench_singl20:48:131
804420993112,17cyclictest275-21systemd-journal21:13:421
804415993126,4cyclictest1060063-21kworker/u8:1+events_unbound00:24:430
804415993126,3cyclictest969972-21kworker/u8:2+flush-8:022:27:120
804415993122,7cyclictest836403-21latency_hist19:40:010
804415993120,8cyclictest1034883-21apt-get23:00:000
804422993025,3cyclictest1099647-21cron00:05:002
804422993020,8cyclictest275-21systemd-journal00:18:412
804422993019,8cyclictest275-21systemd-journal23:15:412
80442099305,7cyclictest964576-21ntpq21:48:071
80442099305,7cyclictest964576-21ntpq21:48:061
80442099304,14cyclictest0-21swapper/123:35:231
804420993026,2cyclictest1069174-21needreboot23:33:011
804420993025,3cyclictest805110-21fschecks_time19:12:551
804420993025,3cyclictest414-21systemd-logind23:45:001
804420993021,6cyclictest275-21systemd-journal21:43:411
804420993018,10cyclictest857029-21fschecks_time20:02:551
804420993017,11cyclictest275-21systemd-journal22:34:421
804420993017,11cyclictest0-21swapper/122:48:081
804420993012,16cyclictest1030621-21cpuspeed_turbos22:57:541
804422992925,2cyclictest921003-21aten2_r5power_e21:07:522
804422992924,4cyclictest3580779-21kworker/u8:3+flush-8:019:33:072
804422992923,4cyclictest969972-21kworker/u8:2+flush-8:000:37:472
804422992919,8cyclictest999799-21cron22:25:002
80442099299,18cyclictest1119858-21/usr/sbin/munin00:28:021
80442099293,4cyclictest0-21swapper/122:12:511
804420992924,3cyclictest931528-21irqrtprio21:17:591
804420992912,15cyclictest850-21mta-sts-daemon22:08:081
804420992912,14cyclictest0-21swapper/119:41:411
804420992911,16cyclictest0-21swapper/123:47:521
80442099290,17cyclictest1085206-21sshd23:52:411
804415992924,3cyclictest1019562-21latency_hist22:45:000
804415992918,9cyclictest954666-21ntpq21:38:030
8901102280,2sleep2371rcuc/220:33:032
804422992818,7cyclictest275-21systemd-journal22:52:412
80442099284,5cyclictest0-21swapper/120:37:551
80442099281,5cyclictest925096-21timerwakeupswit21:08:091
804415992824,3cyclictest886115-21kworker/u8:3+flush-8:020:47:580
804415992824,3cyclictest886115-21kworker/u8:3+flush-8:020:47:580
804415992823,3cyclictest989925-21idleruntime-cro22:15:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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