You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-16 - 12:38

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 #5, slot #4

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
  Intel
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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack5slot4s.osadl.org (updated Sat May 16, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2636323470,2sleep375-21kworker/3:1+events21:30:553
416045121870,5sleep30-21swapper/320:30:523
413954421840,2sleep3481ktimers/320:06:073
41232762800,2chrt75-21kworker/3:1-events19:50:593
4078617997148,8cyclictest194593-21base6400:20:010
4078622996965,3cyclictest44756-21kworker/u8:2+flush-8:022:21:091
4078622996960,7cyclictest4073570-21kworker/u8:3+flush-8:020:21:061
4078622996556,7cyclictest44756-21kworker/u8:2+flush-8:022:01:051
448152640,6chrt0-21swapper/221:46:072
4078628996455,6cyclictest280-21systemd-journal22:00:012
4078622996457,5cyclictest90084-21kworker/u8:0+events_unbound00:06:021
4078628996358,3cyclictest3250028-21kworker/u8:1+flush-8:020:11:102
4078617996255,4cyclictest174086-21kworker/u8:3+flush-8:000:16:080
4078622996054,4cyclictest4035891-21kworker/u8:0+flush-8:019:16:081
4078622996053,5cyclictest3250028-21kworker/u8:1+flush-8:020:01:061
4078622995748,7cyclictest44699-21ntpq21:46:021
4078622995650,4cyclictest90084-21kworker/u8:0+flush-8:000:11:081
4078622995650,4cyclictest44756-21kworker/u8:2+flush-8:021:51:061
4078622995649,5cyclictest4090800-21kworker/u8:2+flush-8:019:40:011
4078622995643,9cyclictest194130-21apt-get00:19:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional