You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2025-12-18 - 23:02

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 #5

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 rackeslot5s.osadl.org (updated Thu Dec 18, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2625999250,4cyclictest12032-21awk10:00:001
26260992422,1cyclictest0-21swapper/209:09:412
2625999240,23cyclictest22858-21cron11:30:001
2625999240,23cyclictest0-21swapper/110:55:001
2626199230,23cyclictest0-21swapper/307:39:413
2626199230,22cyclictest17947-21apt-get12:29:413
26260992321,1cyclictest12968-21apt-get08:59:422
26260992320,2cyclictest313-21systemd-journal08:45:012
2626099230,2cyclictest14919-21perf12:20:002
2625999230,22cyclictest211rcuc/108:20:001
2625999230,1cyclictest313-21systemd-journal07:35:001
26258992323,0cyclictest21322-21apt-get08:09:440
26258992321,1cyclictest619-21polkitd09:25:010
26258992321,1cyclictest11086-21idleruntime-cro07:45:010
26261992222,0cyclictest0-21swapper/309:09:413
26261992220,1cyclictest7558-21latency_hist08:45:013
26261992220,1cyclictest0-21swapper/307:30:003
2626199220,21cyclictest622-21gdbus12:25:003
2626199220,21cyclictest3363-21apt-get08:39:403
2626199220,21cyclictest21092-21apt-get11:29:423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional