You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-07-12 - 21:05

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 Jul 12, 2026 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2658221080,3chrt0-21swapper/210:13:322
1398221030,3chrt0-21swapper/212:33:302
1398221030,3chrt0-21swapper/212:33:302
257682980,3sleep20-21swapper/211:38:312
257682980,3sleep20-21swapper/211:38:312
100482940,3sleep20-21swapper/212:23:292
100482940,3sleep20-21swapper/212:23:292
100482940,3sleep20-21swapper/212:23:292
34982920,2sleep20-21swapper/209:13:182
34982920,2sleep20-21swapper/209:13:182
162392870,3sleep30-21swapper/309:43:423
162392870,3sleep30-21swapper/309:43:423
162392870,3sleep30-21swapper/309:43:423
53742830,2sleep20-21swapper/207:48:402
53742830,2sleep20-21swapper/207:48:402
166182800,3chrt0-21swapper/212:38:412
166182800,3chrt0-21swapper/212:38:412
166182800,3chrt0-21swapper/212:38:412
43122680,2chrt0-21swapper/109:13:331
244982610,4sleep024499-21/usr/sbin/munin11:33:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional