You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-11-03 - 11:50

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 #9, slot #8

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: 50 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 rack9slot8s.osadl.org (updated Mon Nov 03, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501890,0irq/47-4a10000015190-21runrttasks19:08:170
154349911721,0cyclictest7901-21ssh22:31:230
154349911345,0cyclictest81850irq/46-4a10000021:50:180
154349911143,0cyclictest81850irq/46-4a10000000:39:290
154349911138,0cyclictest81850irq/46-4a10000022:52:570
154349911129,0cyclictest13932-21sh21:35:450
15434991109,0cyclictest12749-21ssh21:33:220
154349910939,0cyclictest81850irq/46-4a10000023:27:030
154349910924,0cyclictest15201-21runrttasks22:02:010
154349910749,0cyclictest101ktimersoftd/023:19:590
154349910739,0cyclictest81850irq/46-4a10000000:13:320
154349910631,0cyclictest3213-21ssh22:21:300
154349910511,0cyclictest31606-21kworker/u2:523:32:230
154349910444,0cyclictest81850irq/46-4a10000022:59:450
154349910444,0cyclictest81850irq/46-4a10000021:27:080
154349910434,0cyclictest19069-21runrttasks00:03:580
154349910431,0cyclictest7642-21seq21:22:310
154349910428,0cyclictest374-21seq21:01:230
154349910329,0cyclictest0-21swapper21:40:090
154349910242,0cyclictest81850irq/46-4a10000022:12:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional