You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2025-12-27 - 00:12

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 #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
  
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 20 highest latencies:
System rack5slot3s.osadl.org (updated Fri Dec 26, 2025 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41812236162,23sleep10-21swapper/107:06:231
44412232164,56sleep00-21swapper/007:09:450
41672204167,25sleep20-21swapper/207:06:122
25042202166,24sleep30-21swapper/307:05:083
1071221340,4sleep2455999cyclictest08:35:142
277192530,3sleep1455499cyclictest08:00:141
151532530,1sleep20-21swapper/207:30:162
140162490,1sleep30-21swapper/307:30:023
251892450,1sleep10-21swapper/109:05:261
4547993910,14cyclictest27200-21awk08:00:010
4547993511,11cyclictest12104-21perf12:20:020
454799344,22cyclictest19605-21kworker/u8:010:21:280
454799333,22cyclictest858-21kworker/u8:011:58:240
454799331,24cyclictest0-21swapper/012:07:460
454799306,12cyclictest11809-21munin-run07:25:010
310272300,8sleep339-21rcuc/308:05:253
456499292,4cyclictest88750irq/134-enp2s0-08:55:263
456499291,11cyclictest0-21swapper/307:51:253
455499281,17cyclictest6977-21latency_hist07:15:021
456499273,9cyclictest3873-21kworker/u8:209:57:443
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional