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2025-05-03 - 01:08
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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 rackbslot7.osadl.org (updated Fri May 02, 2025 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
49589912239,25cyclictest0-21swapper/012:32:310
49589912062,52cyclictest11176-21threads07:25:310
49589911852,12cyclictest28977-21ssh12:25:160
49589911838,18cyclictest0-21swapper/012:05:070
49589911838,18cyclictest0-21swapper/012:05:070
4958991183,47cyclictest347-21runrttasks11:06:340
49589911731,25cyclictest0-21swapper/010:35:240
4958991165,42cyclictest15928-21sendmail_mailqu09:15:270
4958991143,59cyclictest32305-21ssh09:45:200
4958991143,36cyclictest19153-21grep11:15:320
49589911410,44cyclictest9806-21sh11:55:120
49589911410,44cyclictest9806-21sh11:55:120
4958991133,39cyclictest347-21runrttasks12:12:480
4963991123,66cyclictest685-21apt-get10:45:081
4963991123,66cyclictest685-21apt-get10:45:081
49589911117,41cyclictest31618-21unixbench_multi10:40:350
49589910958,9cyclictest13844-21ssh09:11:350
49589910958,9cyclictest13844-21ssh09:11:350
49659910743,37cyclictest0-21swapper/211:00:272
49659910743,37cyclictest0-21swapper/211:00:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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