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2022-10-03 - 10:47

x86 Intel Core i5-8365UE @1600 MHz, Linux 5.19.0-rc7-rt7 (Profile)

Latency plot of system in rack #e, slot #1
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 -Sp90 -i200 -h400 -q done
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rackeslot1.osadl.org (updated Mon Oct 03, 2022 00:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18814590180,17cyclictest578914-21kthreadcore23:35:200
188150901713,1cyclictest0-21swapper/100:11:391
188145901715,1cyclictest363869-21kthreadcore21:30:180
188145901715,1cyclictest1-21systemd00:05:010
18814590170,1cyclictest263768-21apt-config20:15:020
18814590170,16cyclictest423082-21kthreadcore22:05:190
18814590170,16cyclictest0-21swapper/019:35:030
18814590170,16cyclictest0-21swapper/000:30:020
18814590170,16cyclictest0-21swapper/000:30:020
188150901613,1cyclictest0-21swapper/122:23:201
18814590160,2cyclictest532585-21runrttasks23:09:270
18814590160,1cyclictest324317-21grep21:05:190
18814590160,15cyclictest353317-21ssh21:25:060
18814590160,15cyclictest198504-21/usr/sbin/munin19:15:260
18814590160,0cyclictest0-21swapper/021:56:070
18815190150,14cyclictest5839002sleep223:38:442
18815190150,14cyclictest0-21swapper/223:56:402
18815190150,14cyclictest0-21swapper/223:41:302
18815190150,14cyclictest0-21swapper/221:52:352
18815190150,14cyclictest0-21swapper/200:24:412
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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