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2026-03-15 - 07:21
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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 Sun Mar 15, 2026 00:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2152221997315,39cyclictest2196030-21/usr/sbin/munin20:25:224
215221899610,2cyclictest0-21swapper/123:40:161
2152221996018,41cyclictest2243375-21/usr/sbin/munin21:55:194
2152221995739,18cyclictest0-21swapper/419:20:194
2152221995717,19cyclictest875-21mta-sts-daemon22:26:484
2152221995717,19cyclictest236199-21snmpd21:21:454
2152221995637,19cyclictest2308378-21sshd23:50:194
2152221995618,19cyclictest2218576-21munin-run21:10:004
2152221995618,19cyclictest2189607-21ls20:15:184
2152221995616,19cyclictest871-21mta-sts-daemon21:12:574
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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