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2022-12-02 - 20:15

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

Latency plot of system in rack #0, slot #4
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 rack0slot4.osadl.org (updated Fri Dec 02, 2022 00:45:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2239132381363,10sleep00-21swapper/019:05:550
2239832377358,11sleep70-21swapper/719:06:5113
2241462357339,9sleep130-21swapper/1319:09:055
2238962347340,4sleep40-21swapper/419:05:4210
2241412346327,10sleep90-21swapper/919:09:0115
2239662346328,10sleep100-21swapper/1019:06:372
2241382345321,16sleep60-21swapper/619:08:5712
2239152340322,10sleep20-21swapper/219:05:578
2206112340320,11sleep140-21swapper/1419:05:056
2241302339320,9sleep150-21swapper/1519:08:507
2238772339320,9sleep120-21swapper/1219:05:354
2239142335317,10sleep10-21swapper/119:05:561
2239582334315,11sleep80-21swapper/819:06:3614
2239422333315,10sleep110-21swapper/1119:06:223
2239512331313,10sleep30-21swapper/319:06:309
2239362328309,10sleep50-21swapper/519:06:1611
4436512610,0sleep100-21swapper/1022:39:382
224665995110,0cyclictest0-21swapper/1422:15:086
3043092340,0sleep40-21swapper/420:40:1210
22463599327,14cyclictest0-21swapper/621:09:2612
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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