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2026-03-24 - 06:26
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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 Tue Mar 24, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1863321136,64sleep018448-21/usr/sbin/munin19:00:050
199389910528,50cyclictest15448-21ssh21:38:490
199389910528,50cyclictest15448-21ssh21:38:490
19956991042,71cyclictest28353-21apt-get22:54:522
19956991042,71cyclictest28353-21apt-get22:54:522
199389910321,55cyclictest9620-21rm22:22:440
199389910321,55cyclictest9620-21rm22:22:440
199389910234,20cyclictest6101-21apt-get19:59:480
199389910227,40cyclictest352-21runrttasks22:09:520
199389910226,31cyclictest0-21swapper/023:19:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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