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2025-11-26 - 09:36
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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 10 highest latencies:
System rackfslot7.osadl.org (updated Wed Nov 26, 2025 00:46:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3206257999617,39cyclictest3382656-21/usr/sbin/munin00:20:240
3206257998910,59cyclictest1-21systemd22:35:420
3206257998628,39cyclictest788-21systemd-logind21:15:010
3206260997637,39cyclictest0-21swapper/300:25:173
3206257997658,18cyclictest32314452sleep019:51:500
3206257997658,18cyclictest32314452sleep019:51:490
3206257997313,59cyclictest3214360-21taskset19:22:020
3206257997112,39cyclictest3209801-21expr19:15:110
3206257997032,38cyclictest0-21swapper/023:51:360
3206257997032,38cyclictest0-21swapper/023:51:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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