You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-11-28 - 19:18
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 rack0slot7.osadl.org (updated Fri Nov 28, 2025 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26899489947517,457cyclictest47-21ksoftirqd/219:21:418
26899489944212,27cyclictest0-21swapper/219:19:358
26899489944212,27cyclictest0-21swapper/219:19:358
2689993994180,417cyclictest0-21swapper/1519:20:247
26899759941710,407cyclictest0-21swapper/1020:17:222
268994899397395,2cyclictest2834214-21kworker/2:0+events20:17:238
268994899397395,2cyclictest0-21swapper/219:13:248
268997899393389,3cyclictest390842-21Renderer19:14:313
268995399390388,2cyclictest2536768-21kworker/3:1+events19:15:229
268995399390388,2cyclictest2536768-21kworker/3:1+events19:15:229
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional