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2023-06-01 - 13:49

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 Thu Jun 01, 2023 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2800022366360,4sleep120-21swapper/1219:08:024
2798662343323,14sleep90-21swapper/919:07:2715
2798742342323,13sleep110-21swapper/1119:07:293
2799812340333,5sleep80-21swapper/819:07:5714
2799712336327,6sleep50-21swapper/519:07:5511
2803932333314,11sleep140-21swapper/1419:09:406
2799652333321,8sleep40-21swapper/419:07:5410
2799772332323,6sleep70-21swapper/719:07:5613
2795862331314,11sleep10-21swapper/119:06:151
2801122328307,14sleep60-21swapper/619:08:2912
28076699326326,0cyclictest0-21swapper/500:39:0011
2796752324304,14sleep100-21swapper/1019:06:402
2798832321301,13sleep130-21swapper/1319:07:305
2794392321300,14sleep150-21swapper/1519:05:417
2794422313294,13sleep00-21swapper/019:05:420
28078099308305,3cyclictest290030-21Xorg19:57:0015
28078499306304,2cyclictest290030-21Xorg20:56:002
280752993060,0cyclictest0-21swapper/122:06:591
28078099305302,3cyclictest290030-21Xorg23:10:0015
28078099305302,3cyclictest290030-21Xorg20:57:0015
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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