You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-09-06 - 06:43

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 #5, slot #4

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
  Intel
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: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack5slot4s.osadl.org (updated Fri Sep 04, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
185713799164151,8cyclictest2151968-21apt-get12:05:032
185713599109105,2cyclictest0-21swapper/112:05:031
20024522660,3sleep20-21swapper/209:32:392
1857129996652,13cyclictest0-21swapper/012:05:030
1857129996553,9cyclictest275-21systemd-journal09:40:000
18677172600,2sleep3471rcuc/307:17:363
20139492540,4sleep10-21swapper/109:47:301
1857135995450,3cyclictest1824831-21kworker/u8:3+events_unbound07:17:461
1857135995244,6cyclictest2087787-21kworker/u8:1+events_unbound11:02:331
1857129995246,4cyclictest1967983-21kworker/u8:2+events_unbound09:12:310
1857137995136,13cyclictest1873943-21apt-get07:25:002
1857137995129,20cyclictest275-21systemd-journal09:30:002
1857129995046,3cyclictest1857303-21kworker/u8:1+events_unbound07:20:010
1857135994945,3cyclictest1869376-21kworker/u8:0+flush-8:007:27:311
1857135994944,4cyclictest1899239-21kworker/u8:0+events_unbound08:58:031
1857129994944,3cyclictest2102293-21kworker/u8:0+events_unbound11:20:000
1857129994941,6cyclictest2112718-21/usr/sbin/munin11:27:450
19315742480,4sleep3481ktimers/308:22:333
1857135994844,3cyclictest2003108-21kworker/u8:0+events_unbound09:52:281
1857135994840,6cyclictest2042809-21kworker/u8:0+events_unbound10:47:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional