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2026-07-20 - 16:35
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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 rackbslot7.osadl.org (updated Mon Jul 20, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26014991043,92cyclictest23437-21apt-get08:26:521
260239910185,11cyclictest26000-21cyclictest07:36:402
260239910185,11cyclictest26000-21cyclictest07:36:402
260149910146,48cyclictest10277-21munin-plugin-st07:46:401
2601499986,81cyclictest25946-21apt-get10:31:541
26014999728,11cyclictest0-21swapper/108:46:501
26014999635,53cyclictest0-21swapper/107:27:071
26014999635,53cyclictest0-21swapper/107:27:071
26014999627,11cyclictest0-21swapper/111:47:101
26009999574,15cyclictest20010-21gpgv08:16:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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