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Default latency plot of shadow in rack #3, slot #3

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 50 highest latencies:
System rack3slot3s.osadl.org (updated Fri Jan 23, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
925977212467,53sleep30-21swapper/319:10:003
104562821150,2sleep20-21swapper/221:00:152
92578728856,10sleep10-21swapper/119:07:331
92587128368,9sleep20-21swapper/219:08:382
92579127854,6sleep00-21swapper/019:07:360
926258993026,2cyclictest0-21swapper/323:30:003
92625899302,12cyclictest1383294-21taskset00:15:383
12806662261,10sleep11055493-21diskmemload23:18:281
926258992522,1cyclictest0-21swapper/323:10:143
926258992319,2cyclictest0-21swapper/322:05:283
92625899231,19cyclictest0-21swapper/323:17:253
926258992219,1cyclictest0-21swapper/323:00:013
926258992218,2cyclictest1168943-21turbostat22:15:003
926258992211,8cyclictest944099-21chrt19:22:443
92625899221,17cyclictest1420966-21taskset00:39:433
92625899221,17cyclictest1377625-21taskset00:14:333
92625899214,13cyclictest0-21swapper/300:24:593
92625899212,12cyclictest1125553-21taskset21:50:033
926258992119,1cyclictest0-21swapper/300:00:123
926258992118,1cyclictest0-21swapper/322:42:543
92625899208,8cyclictest966283-21taskset19:45:123
926258992018,1cyclictest0-21swapper/323:32:403
926258992017,1cyclictest0-21swapper/322:15:263
926258992016,2cyclictest0-21swapper/322:27:013
926258992013,3cyclictest0-21swapper/322:45:553
92625899201,15cyclictest1098767-21taskset21:34:353
13860972200,8sleep01055493-21diskmemload00:19:160
92625899195,2cyclictest0-21swapper/323:55:353
92625899192,12cyclictest1342183-21taskset23:53:443
926258991917,1cyclictest0-21swapper/319:14:593
926258991916,2cyclictest0-21swapper/300:10:013
926258991916,1cyclictest0-21swapper/322:50:253
926258991916,1cyclictest0-21swapper/321:44:103
926258991916,1cyclictest0-21swapper/319:15:433
926258991915,2cyclictest0-21swapper/321:35:223
926258991915,2cyclictest0-21swapper/320:50:173
92625899191,14cyclictest1256047-21chrt23:05:033
92625899191,14cyclictest0-21swapper/323:35:353
92625899191,14cyclictest0-21swapper/323:35:353
92625899191,14cyclictest0-21swapper/322:36:523
92625899191,14cyclictest0-21swapper/321:55:093
92625899191,14cyclictest0-21swapper/300:30:473
92625899191,14cyclictest0-21swapper/300:27:233
12912182191,13sleep11291251-21forks23:25:131
12091792191,11sleep01055493-21diskmemload22:36:030
926258991814,2cyclictest0-21swapper/321:00:143
926258991811,4cyclictest0-21swapper/322:22:033
92625899181,14cyclictest0-21swapper/321:27:123
92625899181,14cyclictest0-21swapper/321:22:573
92625899181,14cyclictest0-21swapper/321:11:443
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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