You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-07-26 - 18:03

Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz, Linux 5.10.8-rt24 (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 -h200 -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 Jul 26, 2021 00:46:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40200562358352,4sleep30-21swapper/319:05:159
40218452357338,12sleep150-21swapper/1519:09:457
40218372351333,12sleep70-21swapper/719:09:3713
40216142350331,12sleep60-21swapper/619:06:2312
40217312349329,13sleep110-21swapper/1119:08:053
40187782349329,13sleep130-21swapper/1319:05:105
40218552347327,13sleep80-21swapper/819:09:5414
40218162347327,13sleep50-21swapper/519:09:1911
40216892347327,13sleep40-21swapper/419:07:2510
40216542347327,13sleep90-21swapper/919:06:5815
40217322346327,12sleep120-21swapper/1219:08:064
40217202346326,13sleep10-21swapper/119:07:541
40217582345325,13sleep20-21swapper/219:08:278
40218402343323,13sleep100-21swapper/1019:09:392
40217912343324,12sleep00-21swapper/019:08:580
40215702342322,13sleep140-21swapper/1419:05:436
402216199289289,0cyclictest0-21swapper/320:27:009
402215699286282,4cyclictest2102-21gnome-shell20:03:598
402219899285281,4cyclictest2050-21Xorg23:24:594
4022190992850,285cyclictest0-21swapper/1020:03:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional