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2026-01-09 - 11:40
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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 20 highest latencies:
System rackeslot5.osadl.org (updated Fri Jan 09, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1320999310,3cyclictest23321-21apt-get20:40:111
1321199300,29cyclictest307-21systemd-journal23:30:013
1321099300,29cyclictest25887-21awk21:55:002
1321099300,1cyclictest23009-21cron20:40:002
13211992927,1cyclictest0-21swapper/322:40:013
1321199290,28cyclictest30030-21munin-run20:55:003
13210992927,1cyclictest32091-21cron00:25:012
1321099290,28cyclictest0-21swapper/219:30:102
13209992927,1cyclictest396-21cron22:10:011
1320999290,28cyclictest30005-21cron20:55:001
1320999290,28cyclictest28514-21apt-get22:00:111
1320999290,28cyclictest25096-21apt-get19:35:121
13208992927,1cyclictest307-21systemd-journal21:40:010
1320899290,28cyclictest6585-21apt-get23:30:120
1320899290,28cyclictest20391-21cron20:35:000
1320899290,28cyclictest0-21swapper/021:10:100
1321199280,27cyclictest28514-21apt-get22:00:113
1321199280,0cyclictest23849-21apt-get21:50:133
1321199280,0cyclictest20023-21apt-get22:50:123
1321199280,0cyclictest0-21swapper/321:05:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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