You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-09-18 - 21:30
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 10 highest latencies:
System rackeslot3.osadl.org (updated Thu Sep 18, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3626469996561,2cyclictest0-21swapper/109:20:481
3626469996142,18cyclictest3650185-21kworker/1:108:30:141
3626469996141,18cyclictest3678842-21kworker/1:009:50:131
3626469996043,16cyclictest3656659-21kworker/1:009:05:191
3626469995944,14cyclictest3633936-21kworker/1:007:45:131
3626469995943,15cyclictest1423251-1kworker/1:1H08:00:141
362646999590,2cyclictest1756130-21systemd-journal11:35:001
3626469995843,14cyclictest3732417-21kworker/1:012:30:131
3626469995843,14cyclictest3701815-21kworker/1:110:55:181
3626469995842,15cyclictest3656659-21kworker/1:009:00:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional