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2026-08-27 - 18:36
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Thu Aug 27, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14271210432,24sleep10-21swapper/107:07:071
281752830,5sleep1251rcuc/109:15:361
14725998263,12cyclictest26-21ksoftirqd/107:40:111
14725998263,12cyclictest26-21ksoftirqd/107:40:111
1296828029,40sleep00-21swapper/007:05:050
14725997343,15cyclictest26-21ksoftirqd/107:20:131
14725997241,16cyclictest26-21ksoftirqd/107:55:141
132932720,12sleep113291-21sleep11:40:001
254212710,6sleep00-21swapper/010:40:310
14725996951,13cyclictest0-21swapper/109:10:271
14725996940,17cyclictest26-21ksoftirqd/109:45:141
14722996917,37cyclictest14-21ksoftirqd/009:45:170
14722996830,9cyclictest14-21ksoftirqd/012:20:310
14722996820,16cyclictest14-21ksoftirqd/012:05:150
103282670,9chrt10329-21sendmail10:00:001
14725996621,40cyclictest26-21ksoftirqd/110:15:301
1472299666,18cyclictest29531-21apt-get12:25:100
14722996636,24cyclictest14-21ksoftirqd/011:20:270
14725996537,16cyclictest0-21swapper/107:10:141
14722996527,12cyclictest14-21ksoftirqd/012:20:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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