You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-05-09 - 05:51
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 rackfslot7.osadl.org (updated Fri May 09, 2025 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1646384995815,41cyclictest1825006-21munin-run00:25:022
1646384995718,2cyclictest878-21mta-sts-daemon20:06:412
1646384995618,0cyclictest1801084-21ntpq23:40:222
1646384995535,19cyclictest876-21mta-sts-daemon22:45:172
1646384995517,19cyclictest1672134-21munin-run19:55:022
1646385995351,1cyclictest511ktimers/323:25:203
1646384995314,3cyclictest0-21swapper/223:04:382
1646384995314,39cyclictest0-21swapper/200:00:322
1646384995314,2cyclictest0-21swapper/200:36:302
1646384995313,39cyclictest0-21swapper/223:05:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional