You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-09-22 - 07:17

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 #0, 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 
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 rack0slot3s.osadl.org (updated Fri Sep 22, 2023 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2841361994500,447cyclictest0-21swapper/321:04:553
284135899448446,1cyclictest0-21swapper/219:44:562
284136199446443,3cyclictest2852997-21turbostat20:20:003
284136199446441,4cyclictest2937807-21turbostat23:25:003
284137599445440,4cyclictest2846683-21munin-run19:40:007
284137599443441,2cyclictest2883671-21turbostat21:54:557
284136199441439,2cyclictest0-21swapper/320:49:553
284136199440440,0cyclictest2851426-21turbostat20:10:003
284137599439437,1cyclictest2926423-21munin-run23:05:007
284136199437435,2cyclictest2889368-21turbostat22:00:003
284136199437435,2cyclictest2852212-21turbostat20:15:003
284136199437435,1cyclictest2980553-21turbostat00:40:013
284137599436433,2cyclictest2852212-21turbostat20:19:557
284137599435432,2cyclictest2850641-21turbostat20:09:557
284136199435434,1cyclictest2856112-21turbostat20:40:003
284137599434433,1cyclictest0-21swapper/722:05:007
284137599433431,2cyclictest2954909-21turbostat23:59:557
284136199433429,3cyclictest2946371-21turbostat23:40:003
284137599432432,0cyclictest2845119-21turbostat19:34:557
284137599431430,0cyclictest0-21swapper/722:15:007
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional