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2025-01-22 - 11:44
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 Wed Jan 22, 2025 00:46:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25332312371364,4sleep20-21swapper/219:06:518
25332782370362,5sleep40-21swapper/419:07:2510
25332742369361,5sleep10-21swapper/119:07:221
25334042361313,14sleep100-21swapper/1019:09:082
25334722353345,5sleep90-21swapper/919:09:5515
25333512350342,5sleep150-21swapper/1519:08:247
25334332344333,7sleep00-21swapper/019:09:310
25334532342317,16sleep130-21swapper/1319:09:435
25332432342319,14sleep140-21swapper/1419:07:036
25334422341318,15sleep60-21swapper/619:09:3612
25332992341319,14sleep80-21swapper/819:07:4514
25313582340327,8sleep50-21swapper/519:05:1811
25333812337314,15sleep110-21swapper/1119:08:533
25332072337314,15sleep120-21swapper/1219:06:294
25332942336312,16sleep30-21swapper/319:07:409
25332002333310,14sleep70-21swapper/719:06:2413
253381199410,38cyclictest2746614-21kworker/u32:3+flush-259:023:53:2014
2533789994141,0cyclictest0-21swapper/021:05:160
2533811993126,3cyclictest776-21systemd-journal21:21:3514
2533811993126,3cyclictest776-21systemd-journal21:21:3514
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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