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2025-09-04 - 07:02
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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 rackfslot7.osadl.org (updated Thu Sep 04, 2025 00:46:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
280854999824,59cyclictest16-21ksoftirqd/023:00:160
280855599656,19cyclictest0-21swapper/621:55:166
280855499612,19cyclictest0-21swapper/500:02:175
280855499602,19cyclictest0-21swapper/523:45:055
280855499601,19cyclictest0-21swapper/520:15:345
280855499600,59cyclictest0-21swapper/522:26:595
280855499600,59cyclictest0-21swapper/520:53:585
280855499600,59cyclictest0-21swapper/500:14:135
280855499590,58cyclictest0-21swapper/519:33:425
280855499590,57cyclictest0-21swapper/519:19:185
280855499590,19cyclictest0-21swapper/522:58:265
280855499590,19cyclictest0-21swapper/521:49:185
280855499580,58cyclictest0-21swapper/522:22:345
280855499580,58cyclictest0-21swapper/500:22:495
280855499580,57cyclictest0-21swapper/522:48:435
280855499580,57cyclictest0-21swapper/522:31:585
280855499580,57cyclictest0-21swapper/520:04:225
280855499580,56cyclictest0-21swapper/520:10:465
280855499580,19cyclictest0-21swapper/522:09:345
280855499570,56cyclictest0-21swapper/519:13:025
280855499560,55cyclictest0-21swapper/520:06:105
280855499560,55cyclictest0-21swapper/500:05:495
280855499560,55cyclictest0-21swapper/500:05:495
2808549995333,20cyclictest0-21swapper/023:15:170
2808549995314,39cyclictest171ktimers/022:00:130
2808555995214,19cyclictest0-21swapper/622:50:156
2808554995233,1cyclictest691ktimers/523:35:185
2808553995214,19cyclictest0-21swapper/420:25:204
2808556995132,19cyclictest0-21swapper/723:10:167
2808556995031,19cyclictest101750irq/39-eno2-TxRx-020:55:177
2808552995010,39cyclictest0-21swapper/323:30:153
280855599499,39cyclictest0-21swapper/621:35:186
280855599499,21cyclictest0-21swapper/623:15:166
280855599477,39cyclictest0-21swapper/622:05:156
280854999479,19cyclictest0-21swapper/023:45:160
280854999478,39cyclictest0-21swapper/021:50:170
280855599468,19cyclictest0-21swapper/620:10:166
280855499461,20cyclictest2935357-21apt-get22:55:025
280855399468,38cyclictest0-21swapper/423:40:124
280855599444,39cyclictest0-21swapper/621:15:206
280855599435,38cyclictest0-21swapper/620:55:176
280855499432,40cyclictest0-21swapper/523:22:575
280855499432,40cyclictest0-21swapper/523:03:025
280855499432,40cyclictest0-21swapper/521:41:185
280855499432,40cyclictest0-21swapper/521:30:465
280855499432,40cyclictest0-21swapper/521:25:305
280855499432,19cyclictest0-21swapper/523:25:255
280855499432,19cyclictest0-21swapper/519:45:185
280855499431,41cyclictest0-21swapper/519:40:065
280855499430,40cyclictest2870953-21/usr/sbin/munin21:00:165
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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