You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2022-10-04 - 08:27

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 Tue Oct 04, 2022 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20515562375369,4sleep10-21swapper/119:05:251
20527052373354,13sleep140-21swapper/1419:09:236
20525442371349,15sleep20-21swapper/219:07:038
20527322368326,14sleep70-21swapper/719:09:4813
20526652367327,14sleep130-21swapper/1319:08:505
20524982366328,31sleep100-21swapper/1019:06:222
20525472364324,13sleep50-21swapper/519:07:0511
20525342361323,14sleep90-21swapper/919:06:5415
20526982360321,14sleep110-21swapper/1119:09:203
20526562360320,13sleep40-21swapper/419:08:4110
20525792353315,31sleep00-21swapper/019:07:330
20524632350329,13sleep120-21swapper/1219:05:524
20524572349329,13sleep60-21swapper/619:05:4612
20525582348326,14sleep150-21swapper/1519:07:167
20526362347326,14sleep30-21swapper/319:08:249
20524942343323,13sleep80-21swapper/819:06:2114
205303999309304,5cyclictest940990-21gnome-shell22:07:599
205304999308304,4cyclictest940990-21gnome-shell20:22:5812
205307399307303,4cyclictest940990-21gnome-shell00:35:584
2053054993070,307cyclictest0-21swapper/700:20:5813
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional