You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-11-29 - 13:27
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 rackfslot7.osadl.org (updated Sat Nov 29, 2025 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2930102997919,59cyclictest3020891-21kworker/5:022:10:145
2930100997436,19cyclictest511ktimers/321:25:073
2930102997132,39cyclictest0-21swapper/520:00:155
2930100996911,58cyclictest2975412-21chrt20:29:403
2930100996911,58cyclictest2975412-21chrt20:29:393
293010099679,19cyclictest0-21swapper/319:59:523
293010099656,19cyclictest0-21swapper/300:03:353
293010099645,19cyclictest0-21swapper/322:01:003
2930100996223,39cyclictest777-21avahi-daemon00:25:193
2930100995819,39cyclictest3053400-21ntp_states22:45:203
2930100995719,38cyclictest0-21swapper/320:55:163
293010099570,38cyclictest0-21swapper/323:01:053
2930100995518,18cyclictest0-21swapper/323:26:013
2930100995517,19cyclictest3065495-21chrt23:08:193
293010099550,15cyclictest0-21swapper/320:52:073
2930104995414,39cyclictest0-21swapper/721:30:167
2930100995419,35cyclictest0-21swapper/321:49:593
2930100995419,35cyclictest0-21swapper/319:16:513
2930100995419,15cyclictest0-21swapper/321:01:033
2930100995411,19cyclictest0-21swapper/320:10:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional