You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-09 - 18:29

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 #e, 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
  
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot4s.osadl.org (updated Sat May 09, 2026 12:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
384784994034,4cyclictest252-21systemd-journal08:06:242
384778993932,5cyclictest513264-21ntpq09:10:220
384778993932,5cyclictest513264-21ntpq09:10:220
384789993634,1cyclictest539613-21fwupd09:36:203
384778993531,3cyclictest519274-21kworker/u8:3+flush-259:009:25:010
384789993431,2cyclictest721751-21apt-get12:35:123
384784993328,4cyclictest431301-21apt-get07:55:122
384778993327,4cyclictest399340-21ntpq07:20:220
384789993127,3cyclictest534759-21kworker/u8:4+flush-259:009:50:243
384784993125,4cyclictest441709-21cat08:05:012
384778993125,5cyclictest502466-21ntpq09:00:220
384778993124,5cyclictest252-21systemd-journal10:10:010
384781993023,5cyclictest684202-21ntpq11:55:221
384781993023,5cyclictest409526-21ntpq07:30:211
384778993024,4cyclictest509-21rs:main0
384789992923,4cyclictest669626-21latency_hist11:45:013
384789992923,4cyclictest669626-21latency_hist11:45:003
384784992925,3cyclictest384755-21kworker/u8:3+flush-259:007:30:282
384778992924,4cyclictest685485-21diskstats12:00:140
384778992923,5cyclictest388983-21ntpq07:10:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional