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2022-08-13 - 17:48

x86 Intel Core i3-8145UE @2200 MHz, Linux 5.10.27-rt36 (Profile)

Latency plot of system in rack #e, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 rackeslot5.osadl.org (updated Sat Aug 13, 2022 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3005699320,31cyclictest296-21systemd-journal10:30:003
3005699300,29cyclictest11696-21munin-run09:50:013
3005699300,29cyclictest0-21swapper/307:33:123
3005199300,29cyclictest24041-21munin-run10:15:002
3005199300,29cyclictest0-21swapper/207:48:122
30047993028,1cyclictest2664-21cron07:20:011
30047993028,1cyclictest0-21swapper/111:20:001
3004799300,29cyclictest13952-21apt-get11:03:181
3004799300,1cyclictest23217-21apt-get08:03:171
3004299300,29cyclictest10604-21apt-get12:03:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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