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2023-06-04 - 04:58

x86 Intel Core i9-9900K @3600 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #0, slot #6
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 rack0slot6.osadl.org (updated Sun Jun 04, 2023 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1787332372352,13sleep10-21swapper/119:07:371
1787022361354,5sleep60-21swapper/619:07:0912
1789022357318,13sleep90-21swapper/919:09:2115
1786842357342,10sleep130-21swapper/1319:07:005
1788352356317,13sleep40-21swapper/419:08:4310
1787292354333,14sleep140-21swapper/1419:07:336
1787302351330,14sleep150-21swapper/1519:07:347
1786202348327,15sleep20-21swapper/219:06:178
1788162345324,14sleep50-21swapper/519:08:2811
1787792345325,13sleep110-21swapper/1119:08:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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