You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-12-03 - 17:41
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 rack3slot6.osadl.org (updated Wed Dec 03, 2025 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1700991007,62cyclictest18866-21apt-get11:00:130
124329914,39sleep00-21swapper/007:07:040
1700999464,16cyclictest0-21swapper/009:45:140
1700998844,35cyclictest14-21ksoftirqd/008:40:140
1700998719,58cyclictest0-21swapper/007:40:110
170099868,67cyclictest6324-21apt-get11:55:140
1700998616,56cyclictest0-21swapper/008:05:120
1700998615,58cyclictest0-21swapper/009:40:130
1700998615,57cyclictest0-21swapper/010:30:130
1700998614,57cyclictest0-21swapper/009:00:130
1700998612,61cyclictest0-21swapper/009:10:140
61342850,8chrt0-21swapper/108:50:291
1700998514,56cyclictest0-21swapper/008:50:140
1706998414,58cyclictest1692-21cyclictest08:25:141
170099847,66cyclictest27633-21apt-get11:25:120
170099847,63cyclictest3097-21apt-get10:15:130
170099847,63cyclictest29070-21apt-get08:25:120
1700998454,18cyclictest14-21ksoftirqd/012:35:140
1700998415,58cyclictest0-21swapper/010:50:140
1700998414,56cyclictest0-21swapper/010:00:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional