You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-12-03 - 10:36
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 20 highest latencies:
System rack9slot2.osadl.org (updated Wed Dec 03, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
293982276195,65sleep00-21swapper/00
299102267178,52sleep30-21swapper/33
299132229191,26sleep10-21swapper/11
299292228191,24sleep20-21swapper/22
3039799226221,3cyclictest8959-21strings0
3040199222218,2cyclictest0-21swapper/11
3040599214211,2cyclictest0-21swapper/22
3041099203199,2cyclictest0-21swapper/33
48612770,6sleep3351ksoftirqd/33
218192460,3sleep20-21swapper/22
261812420,3sleep30-21swapper/33
315792400,2sleep00-21swapper/00
98462380,1sleep30-21swapper/33
3040599284,21cyclictest21356-21cron2
30397992621,3cyclictest24803-21sed0
30405992511,11cyclictest4666-21sed2
3040599250,18cyclictest17386-1kworker/2:0H2
30397992515,8cyclictest11483-21processes0
30397992513,10cyclictest14183-21wc0
30397992513,10cyclictest14183-21wc0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional