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2026-07-07 - 21:03
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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 Tue Jul 07, 2026 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3578741999313,79cyclictest0-21swapper/211:30:172
3578745998345,38cyclictest0-21swapper/611:30:176
3578743997536,39cyclictest3674989-21/usr/sbin/munin10:05:014
3578743997417,38cyclictest3621828-21ntp_offset08:25:214
3578743997315,58cyclictest3681136-21awk10:15:134
3578743997315,39cyclictest236199-21snmpd11:01:114
3578743997029,19cyclictest876-21mta-sts-daemon09:50:424
3578743996628,38cyclictest0-21swapper/412:35:094
3578743996628,38cyclictest0-21swapper/407:25:374
3578743996628,38cyclictest0-21swapper/407:25:374
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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