You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-10-11 - 14:55

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 #3, 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
  TQ-Systems
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 50 highest latencies:
System rack3slot3s.osadl.org (updated Tue Sep 29, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304154021500,4sleep23041534-21cc12
34749012760,2sleep10-21swapper/11
29782272631,53sleep30-21swapper/33
33070032470,5sleep2431ktimers/22
29874802284,15sleep22987489-21cc12
30239682262,9sleep23023979-21cc12
298950399260,18cyclictest0-21swapper/33
30893482253,17sleep13089376-21cc11
30737532251,8sleep13073785-21cc11
30196372251,8sleep13019640-21cc11
298950399250,16cyclictest0-21swapper/33
29833192252,8sleep12983122-21cc11
32282502241,3sleep00-21swapper/00
2989503992420,2cyclictest0-21swapper/33
2989503992418,3cyclictest3024103-21taskset3
2989503992414,6cyclictest0-21swapper/33
298950399240,5cyclictest0-21swapper/33
29853962241,16sleep02985422-21nm0
29965332231,16sleep22996542-21cc12
298950399233,16cyclictest0-21swapper/33
2989503992315,4cyclictest0-21swapper/33
298950399230,5cyclictest0-21swapper/33
298950399230,5cyclictest0-21swapper/33
32668002221,3sleep00-21swapper/00
32633872222,16sleep23265035-21latency2
30877332221,8sleep03087751-21cc10
30563602221,9sleep13056381-21cc11
30095112221,15sleep13009520-21cc11
29966662222,14sleep12996656-21cc11
298950399224,15cyclictest0-21swapper/33
298950399221,17cyclictest0-21swapper/33
298950399221,14cyclictest0-21swapper/33
298950399220,5cyclictest0-21swapper/33
298950399220,15cyclictest0-21swapper/33
30733282211,8sleep03073336-21cc10
30439742211,15sleep13043990-21nm1
30336612213,11sleep03033637-21cc10
30205772211,8sleep03020592-21cc10
298950399213,15cyclictest0-21swapper/33
298950399211,9cyclictest0-21swapper/33
2989503992115,4cyclictest0-21swapper/33
2989503992114,4cyclictest3359567-21taskset3
2989503992112,5cyclictest0-21swapper/33
298950399211,18cyclictest0-21swapper/33
298950399211,17cyclictest0-21swapper/33
298950399211,15cyclictest0-21swapper/33
30951122201,14sleep03095120-21cc10
30319312201,6sleep13031904-21cc11
298950399205,12cyclictest32016812sleep33
298950399203,13cyclictest0-21swapper/33
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional