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2025-12-04 - 18:26
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackeslot4.osadl.org (updated Thu Dec 04, 2025 12:43:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3547402994943,4cyclictest3834864-21fwupd11:18:151
3547398994442,1cyclictest3695594-21kworker/0:0+pm11:18:160
3547398992927,1cyclictest3808597-21kworker/u8:1+events_unbound11:05:000
3547405992721,4cyclictest3873434-21date11:50:012
354740299270,7cyclictest3934779-21ntpq12:35:231
354740299262,22cyclictest3630022-21apt-get08:30:131
354740299262,21cyclictest3822943-21apt-get11:10:121
3547402992620,4cyclictest3798088-21cut10:50:171
3547402992620,3cyclictest3655366-21apt-get08:55:141
354740299261,23cyclictest3771523-21/usr/sbin/munin10:30:001
354740299260,23cyclictest3674530-21cat09:10:201
354740299260,23cyclictest3619426-21sshd08:20:131
354739899260,24cyclictest3771812-21seq10:30:120
354740899254,1cyclictest3754352-21sh10:15:183
3547408992523,1cyclictest3687537-21timerandwakeup09:20:233
354740899251,21cyclictest3670658-21apt-get09:10:143
354740899251,21cyclictest3599129-21apt-get08:00:123
354740899251,21cyclictest0-21swapper/307:40:143
354740899250,23cyclictest3899169-21if_enp0s29f112:10:173
354740899250,22cyclictest3810317-21ssh11:00:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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