You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-14 - 14:56

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #9, slot #3

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  Kontron
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 rack9slot3s.osadl.org (updated Thu May 14, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
119591610,40ptp4l0-21swapper/107:05:571
119591600,39ptp4l0-21swapper/007:07:270
1737925346,2sleep20-21swapper/207:09:532
1727125245,5sleep30-21swapper/307:08:303
169222450,0sleep10-21swapper/109:05:201
119591310,0ptp4l0-21swapper/007:40:150
119591220,1ptp4l21694-21snmp_o5powerctl11:15:201
119591220,0ptp4l0-21swapper/010:10:010
119591210,0ptp4l0-21swapper/010:55:200
119591180,0ptp4l0-21swapper/011:55:180
119591180,0ptp4l0-21swapper/008:40:190
119591170,2ptp4l0-21swapper/207:25:122
119591170,0ptp4l0-21swapper/110:15:221
119591160,1ptp4l22531-21apt-get12:20:120
119591160,0ptp4l0-21swapper/110:40:161
119591160,0ptp4l0-21swapper/109:15:171
119591160,0ptp4l0-21swapper/109:04:341
119591160,0ptp4l0-21swapper/108:55:171
119591160,0ptp4l0-21swapper/009:40:530
119591150,1ptp4l9113-21apt-get09:55:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional