You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-24 - 15:03

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 #4, slot #1

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack4slot1s.osadl.org (updated Sun May 24, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
92052990,3sleep20-21swapper/212:27:482
92052990,3sleep20-21swapper/212:27:482
161992920,2sleep20-21swapper/209:52:472
161992920,2sleep20-21swapper/209:52:472
161992920,2sleep20-21swapper/209:52:472
122532710,2chrt12255-21ntpq11:07:540
122532710,2chrt12255-21ntpq11:07:540
145062690,3sleep20-21swapper/209:47:492
145062690,3sleep20-21swapper/209:47:492
251442600,1chrt0-21swapper/008:47:570
251442600,1chrt0-21swapper/008:47:570
270422590,4sleep20-21swapper/207:27:512
270422590,4sleep20-21swapper/207:27:512
41622580,3sleep30-21swapper/310:47:473
41622580,3sleep30-21swapper/310:47:473
86542520,3sleep00-21swapper/009:32:470
86542520,3sleep00-21swapper/009:32:470
86542520,3sleep00-21swapper/009:32:470
234062490,3chrt0-21swapper/308:43:503
234062490,3chrt0-21swapper/308:43:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional