You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-09-18 - 16:25

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 Thu Sep 18, 2025 12:44:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
103721450,2sleep30-21swapper/308:53:003
103721450,2sleep30-21swapper/308:53:003
2096121360,2sleep1281ktimers/112:38:021
2096121360,2sleep1281ktimers/112:38:021
1148121350,2chrt0-21swapper/212:12:552
1148121350,2chrt0-21swapper/212:12:552
1977921300,2sleep10-21swapper/109:42:591
1977921300,2sleep10-21swapper/109:42:591
2885121250,2sleep028849-21irqstats08:42:520
2885121250,2sleep028849-21irqstats08:42:520
159621120,4sleep10-21swapper/108:57:411
159621120,4sleep10-21swapper/108:57:411
224221090,2chrt0-21swapper/207:32:482
224221090,2chrt0-21swapper/207:32:482
1869021020,1sleep30-21swapper/308:17:353
1869021020,1sleep30-21swapper/308:17:353
2522821000,2chrt25226-21bingrep08:32:521
2522821000,2chrt25226-21bingrep08:32:521
267682980,3chrt0-21swapper/211:27:562
267682980,3chrt0-21swapper/211:27:562
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional