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2025-10-03 - 08:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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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  Congatec
Click here to display the system's profile data.
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 50 highest latencies:
System rackeslot8s.osadl.org (updated Fri Oct 03, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81842099749744,4cyclictest870429-21kworker/2:2+events20:59:472
81842099749743,5cyclictest870429-21kworker/2:2+events20:54:322
81842099748741,6cyclictest870429-21kworker/2:2+events20:40:222
81842099745741,3cyclictest870429-21kworker/2:2+events21:17:262
81842299744739,4cyclictest1020182-21turbostat21:54:553
81842299744736,6cyclictest773773-21kworker/3:2+events19:40:233
81842099742737,4cyclictest870429-21kworker/2:2+events21:07:062
81842099742735,6cyclictest870429-21kworker/2:2+events21:36:352
81842299740735,4cyclictest895513-21turbostat20:14:553
81842299740735,4cyclictest851780-21turbostat19:39:553
81842099740734,5cyclictest870429-21kworker/2:2+events21:01:022
81842099740734,5cyclictest870429-21kworker/2:2+events00:23:272
81842299739735,3cyclictest1070560-21turbostat22:34:563
81842099739734,4cyclictest870429-21kworker/2:2+events20:46:272
81842099738734,3cyclictest870429-21kworker/2:2+events21:44:192
81842299736731,4cyclictest945243-21kworker/3:2+events22:57:533
81842099736732,3cyclictest870429-21kworker/2:2+events23:27:432
81842099736732,3cyclictest870429-21kworker/2:2+events23:27:422
81842299735731,3cyclictest945243-21kworker/3:2+events22:04:403
81842299734729,4cyclictest773773-21kworker/3:2+events19:15:213
81841699728724,3cyclictest805745-21kworker/1:2+events23:36:051
81841699728724,3cyclictest805745-21kworker/1:2+events22:28:121
81841699723719,3cyclictest805745-21kworker/1:2+events23:51:061
81842299721716,4cyclictest832883-21turbostat19:24:553
81841699721717,3cyclictest805745-21kworker/1:2+events23:55:441
81842299720717,2cyclictest945243-21kworker/3:2+events22:05:213
81842299720713,5cyclictest945243-21kworker/3:2+events22:45:193
81841699719715,3cyclictest805745-21kworker/1:2+events23:42:091
81841699719714,4cyclictest805745-21kworker/1:2+events23:30:431
81841699718714,3cyclictest805745-21kworker/1:2+events23:48:561
81841699718713,4cyclictest805745-21kworker/1:2+events19:38:471
81842299714709,4cyclictest945243-21kworker/3:2+events22:37:213
81842299713711,1cyclictest945243-21kworker/3:2+events21:57:323
81842299713709,3cyclictest858074-21kworker/3:1+events19:55:213
81842099713707,5cyclictest870429-21kworker/2:2+events00:30:212
81841699713708,4cyclictest1226995-21turbostat00:39:561
81842299712707,4cyclictest858074-21kworker/3:1+events20:15:223
81842299710705,4cyclictest976371-21turbostat21:19:553
81842299709706,2cyclictest945243-21kworker/3:2+events00:35:223
81841699709704,4cyclictest1057806-21turbostat22:24:551
81842299708704,3cyclictest945243-21kworker/3:2+events22:20:553
81842299707702,4cyclictest920380-21turbostat20:34:563
81842099707703,3cyclictest995313-21turbostat21:34:552
81842099707703,3cyclictest995313-21turbostat21:34:552
81842099706700,5cyclictest926574-21turbostat20:39:562
81842299704699,4cyclictest945243-21kworker/3:2+events23:20:213
81842299703699,3cyclictest1120331-21turbostat23:14:543
81842299703697,5cyclictest945243-21kworker/3:2+events23:01:573
81842299701698,2cyclictest945243-21kworker/3:2+events23:06:243
81842299701697,3cyclictest858074-21kworker/3:1+events20:25:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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