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2019-07-22 - 08:16

Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz, Linux 4.19.1-rt3 (Profile)

Latency plot of system in rack #6, slot #3
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
Characteristics of the 20 highest latencies:
System rack6slot3.osadl.org (updated Mon Jul 22, 2019 00:46:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
957326935,0sleep30-21swapper/319:09:163
957626535,0sleep60-21swapper/619:09:206
952826330,0sleep50-21swapper/519:08:385
950326230,0sleep00-21swapper/019:08:170
945725943,0sleep10-21swapper/119:07:381
943725841,0sleep20-21swapper/219:07:242
954725236,0sleep40-21swapper/419:08:534
952125235,0sleep70-21swapper/719:08:327
711350,0ktimersoftd/70-21swapper/722:48:127
9883993433,0cyclictest9498-21ssh23:26:387
9883993431,0cyclictest70-21rcuc/722:20:007
9883993333,0cyclictest29331-21chrt22:40:447
9883993332,0cyclictest8315-21df21:15:027
9883993332,0cyclictest72-21ksoftirqd/719:30:077
9883993332,0cyclictest4510-21awk20:05:027
9883993332,0cyclictest2562-21perl23:20:067
9883993329,0cyclictest0-21swapper/700:05:447
711330,0ktimersoftd/70-21swapper/723:30:417
711330,0ktimersoftd/70-21swapper/722:58:547
711330,0ktimersoftd/70-21swapper/722:51:197
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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