You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-03-27 - 21:54

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 #3, 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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  TQ-Systems
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 rack3slot3s.osadl.org (updated Thu Mar 27, 2025 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
162206993123,2cyclictest191rcu_preempt00:30:212
162211993026,3cyclictest174027-21sendmail19:40:003
162206993019,6cyclictest389000-21cut00:35:152
162206992619,1cyclictest191rcu_preempt22:39:292
162206992615,7cyclictest0-21swapper/222:30:532
162201992621,3cyclictest1090808-21systemd-journal19:55:000
162201992611,11cyclictest1090808-21systemd-journal22:35:110
162211992521,3cyclictest344489-21dump-pmu-power23:45:013
162211992521,3cyclictest344489-21dump-pmu-power23:45:003
162211992521,3cyclictest197669-21sh20:40:003
162211992520,3cyclictest0-21swapper/300:00:003
162211992514,9cyclictest0-21swapper/323:05:003
162206992522,2cyclictest352868-21rm23:55:002
162206992519,3cyclictest275581-21munin-plugin-st22:25:002
16220499258,2cyclictest0-21swapper/123:07:411
162204992521,2cyclictest254035-21sendmail22:00:001
162204992520,3cyclictest0-21swapper/121:20:001
162204992518,4cyclictest378014-21sh00:21:071
162201992522,2cyclictest0-21swapper/023:00:000
162206992420,2cyclictest339818-21idleruntime-cro23:40:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional