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2023-02-06 - 13:22

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 20 highest latencies:
System rack0slot6.osadl.org (updated Mon Feb 06, 2023 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30081562365344,14sleep120-21swapper/1219:05:534
30083972347325,15sleep70-21swapper/719:07:5713
30083422345326,13sleep140-21swapper/1419:07:326
30084512344324,13sleep50-21swapper/519:08:2711
30084912342301,14sleep90-21swapper/919:08:4715
30084752342323,13sleep10-21swapper/119:08:401
30085922340319,14sleep130-21swapper/1319:09:395
30085872340321,13sleep100-21swapper/1019:09:362
30085252340321,13sleep80-21swapper/819:09:0214
30084782339319,13sleep20-21swapper/219:08:408
30084092339318,14sleep110-21swapper/1119:08:013
30086312337316,14sleep150-21swapper/1519:09:577
30084502335315,13sleep40-21swapper/419:08:2610
30086082333313,13sleep60-21swapper/619:09:4812
30081692328308,14sleep00-21swapper/019:05:570
30085452327306,14sleep30-21swapper/319:09:149
3008963993080,305cyclictest0-21swapper/1100:11:003
300893399308304,4cyclictest3326960-21Xorg21:30:599
300893399307304,3cyclictest3326960-21Xorg22:09:009
300893399307304,3cyclictest3326960-21Xorg21:37:599
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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