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2019-07-22 - 08:03

Intel(R) Core(TM) i5-6440EQ CPU @ 2.70GHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #5, slot #2
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 20 highest latencies:
System rack5slot2.osadl.org (updated Mon Jul 22, 2019 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
90142205189,11sleep10-21swapper/119:08:511
90482189172,12sleep00-21swapper/019:09:180
88852181164,12sleep30-21swapper/319:07:133
91042165149,11sleep20-21swapper/219:10:002
292062450,0sleep10-21swapper/121:59:481
93559980,7cyclictest0-21swapper/223:30:022
93479982,3cyclictest6306-21perf00:30:000
93479980,4cyclictest24431-21munin-run20:45:000
93479970,4cyclictest6939-21munin-run21:15:010
93569950,5cyclictest6500-21/usr/sbin/munin00:30:133
93559950,5cyclictest0-21swapper/219:40:032
93559950,4cyclictest0-21swapper/221:00:032
93529950,5cyclictest0-21swapper/121:05:041
93529950,5cyclictest0-21swapper/120:05:081
93479955,0cyclictest0-21swapper/019:10:030
93479954,1cyclictest0-21swapper/020:30:130
93479951,3cyclictest0-21swapper/000:05:040
93479950,4cyclictest20138-21apt-get19:30:020
93479950,4cyclictest0-21swapper/021:45:030
93479950,3cyclictest0-21swapper/019:15:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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