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2024-09-13 - 00:30
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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 Sep 12, 2024 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2923821120,4sleep126-21ksoftirqd/108:45:161
272199911019,83cyclictest0-21swapper/009:00:130
272199910143,48cyclictest1510-21apt-get10:30:120
27219999816,75cyclictest0-21swapper/008:20:130
27219999614,68cyclictest0-21swapper/007:10:140
27219999414,63cyclictest0-21swapper/010:05:150
27219999319,64cyclictest0-21swapper/010:15:130
27219999314,62cyclictest0-21swapper/010:55:130
27219999214,66cyclictest0-21swapper/007:20:130
27219999214,62cyclictest0-21swapper/012:35:140
27219999214,21cyclictest473-21avahi-daemon10:20:120
27219999113,62cyclictest0-21swapper/012:20:120
2722299908,55cyclictest0-21swapper/107:25:241
27219999026,19cyclictest4831-21grep07:35:290
27219999017,66cyclictest250-21systemd-journal11:06:210
27219999014,62cyclictest0-21swapper/007:50:120
27219999014,61cyclictest0-21swapper/008:30:130
27219999012,62cyclictest0-21swapper/008:40:130
266652909,69sleep00-21swapper/007:06:010
27219998915,63cyclictest0-21swapper/008:45:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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