You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-05-05 - 01:40

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 Sun May 04, 2025 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
295842236166,57sleep20-21swapper/207:09:252
294622234162,58sleep10-21swapper/107:07:511
293572233160,60sleep00-21swapper/007:06:290
295502218145,25sleep30-21swapper/307:08:583
235362640,3sleep19-21rcu_preempt08:05:231
189362570,4sleep121-21rcuc/107:55:201
62972530,2sleep00-21swapper/009:55:170
2971999399,14cyclictest2110-21munin-run11:00:000
2971999380,15cyclictest0-21swapper/010:37:410
2971999377,14cyclictest31679-21munin-run09:40:010
29719993722,3cyclictest13108-21munin-run11:25:010
29736993510,15cyclictest14189-21cat09:00:013
2972599353,23cyclictest7396-1kworker/1:2H11:20:561
2971999357,13cyclictest24404-21awk08:10:020
2973699343,22cyclictest16557-21kworker/u8:010:22:393
2971999341,26cyclictest0-21swapper/010:26:530
2971999340,14cyclictest0-21swapper/007:16:060
2973699332,22cyclictest17462-21kworker/u8:011:35:433
2972599331,21cyclictest0-21swapper/110:35:011
2971999336,12cyclictest445-21awk12:10:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional