You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-12-04 - 09:47
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 rack1slot8.osadl.org (updated Thu Dec 04, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
777699554407,48cyclictest0-21swapper/119:10:021
75372519498,14sleep10-21swapper/119:07:571
777499513429,78cyclictest0-21swapper/019:23:140
777499413307,75cyclictest0-21swapper/019:10:020
777699396329,31cyclictest0-21swapper/119:23:151
2168991170,4rtkit-daemon2167-21rtkit-daemon23:13:281
2168991150,4rtkit-daemon2167-21rtkit-daemon22:51:341
2168991150,4rtkit-daemon2167-21rtkit-daemon22:51:331
2168991140,4rtkit-daemon2167-21rtkit-daemon21:16:411
2168991130,4rtkit-daemon2167-21rtkit-daemon21:12:061
2168991130,4rtkit-daemon2167-21rtkit-daemon00:28:551
2168991130,4rtkit-daemon2167-21rtkit-daemon00:09:051
2168991130,3rtkit-daemon2167-21rtkit-daemon19:50:441
2168991120,4rtkit-daemon2167-21rtkit-daemon21:09:501
2168991120,4rtkit-daemon2167-21rtkit-daemon20:41:211
2168991120,4rtkit-daemon2167-21rtkit-daemon20:38:451
7774991119,96cyclictest0-21swapper/022:11:590
2168991110,4rtkit-daemon2167-21rtkit-daemon20:54:161
2168991110,3rtkit-daemon2167-21rtkit-daemon19:49:541
2168991110,3rtkit-daemon2167-21rtkit-daemon19:36:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional