You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-12-03 - 18:38

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 #e, 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
  Congatec
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 50 highest latencies:
System rackeslot8s.osadl.org (updated Wed Dec 03, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38542539913070,1303cyclictest401772sleep33
38542539912854,1277cyclictest39505352sleep33
38542539912440,1241cyclictest40968172sleep33
3854253993650,362cyclictest4160973-21turbostat3
692482550,1sleep10-21swapper/11
3854253992111,8cyclictest0-21swapper/33
3854253992012,0cyclictest0-21swapper/33
3854253992010,1cyclictest0-21swapper/33
3854253991912,0cyclictest0-21swapper/33
385425399191,15cyclictest4177196-21turbostat3
385425399189,1cyclictest0-21swapper/33
3854253991815,1cyclictest0-21swapper/33
3854253991810,0cyclictest0-21swapper/33
41838322171,8sleep14183840-21ssh1
39182572174,10sleep13918304-21proc_pri1
3854253991714,1cyclictest0-21swapper/33
190898170,12rtkit-daemon3958519-21cut1
3854253991613,1cyclictest0-21swapper/33
385425399161,11cyclictest3891012-21taskset3
38483592161,5sleep03848475-21perl0
385425399155,7cyclictest3874824-21taskset3
3854253991513,1cyclictest0-21swapper/33
3854253991513,1cyclictest0-21swapper/33
3854253991513,1cyclictest0-21swapper/33
3854253991513,1cyclictest0-21swapper/33
3854253991513,1cyclictest0-21swapper/33
3854253991512,1cyclictest0-21swapper/33
3854253991512,1cyclictest0-21swapper/33
3854253991512,1cyclictest0-21swapper/33
3854253991512,1cyclictest0-21swapper/33
3854253991512,1cyclictest0-21swapper/33
3854253991511,2cyclictest0-21swapper/33
385425399151,11cyclictest3919140-21turbostat3
385425399151,10cyclictest4160967-21turbostat3
385425399151,10cyclictest4091193-21taskset3
385425399150,12cyclictest3860482-21turbostat3
385425399146,6cyclictest39266142sleep33
385425399145,6cyclictest40136732sleep33
385425399145,6cyclictest40136732sleep33
385425399144,6cyclictest41372132sleep33
385425399143,9cyclictest31844-21taskset3
3854253991413,0cyclictest0-21swapper/33
3854253991412,1cyclictest0-21swapper/33
3854253991412,1cyclictest0-21swapper/33
3854253991412,1cyclictest0-21swapper/33
3854253991412,1cyclictest0-21swapper/33
3854253991412,1cyclictest0-21swapper/33
3854253991412,0cyclictest0-21swapper/33
3854253991411,1cyclictest0-21swapper/33
3854253991411,1cyclictest0-21swapper/33
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional