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2022-10-03 - 09:59

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

Latency plot of system in rack #0, slot #7
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 rack0slot7.osadl.org (updated Mon Oct 03, 2022 00:45:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41586642215152,52sleep150-21swapper/1519:07:497
41585102187167,10sleep30-21swapper/319:05:599
41586782184178,3sleep100-21swapper/1019:08:002
41584942181156,14sleep60-21swapper/619:05:4712
41586262180164,8sleep80-21swapper/819:07:2514
41588602177164,6sleep50-21swapper/519:09:1511
41588652168157,6sleep90-21swapper/919:09:1915
41585362168149,9sleep120-21swapper/1219:06:254
41588482163144,10sleep110-21swapper/1119:09:053
41585112148130,9sleep40-21swapper/419:06:0110
41587802137117,10sleep130-21swapper/1319:08:355
4158613210546,51sleep140-21swapper/1419:07:156
41586392102101,0sleep10-21swapper/119:07:351
415851429392,0sleep70-21swapper/719:06:0413
415866628582,1sleep00-21swapper/019:07:500
415866828178,1sleep20-21swapper/219:07:518
7943302530,0sleep150-21swapper/1522:59:007
7943302530,0sleep150-21swapper/1522:59:007
415950599530,24cyclictest0-21swapper/1519:44:297
415950599530,24cyclictest0-21swapper/1519:44:287
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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