You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-07-31 - 10:45

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 Jul 31, 2026 00:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145077121830,2sleep3575-21kworker/3:2+events22:33:033
12786272810,2sleep3575-21kworker/3:2+events19:38:063
13544862760,6chrt451irq_work/320:57:543
14589072650,4sleep10-21swapper/122:42:561
13363502570,2chrt575-21kworker/3:2+events20:38:003
14912542550,4sleep10-21swapper/123:13:061
1247889995544,8cyclictest1363714-21latency_hist21:05:010
1247889995042,6cyclictest1279463-21latency_hist19:40:010
1247892994837,9cyclictest275-21systemd-journal21:35:001
1247892994637,6cyclictest1543077-21apt-get00:07:531
1247889994638,6cyclictest1304841-21apt-get20:07:520
12529202450,4sleep00-21swapper/019:15:010
1247892994537,6cyclictest1537576-21latency_hist00:00:011
1247892994439,4cyclictest161772-21kworker/u8:0+flush-8:019:15:061
1247892994439,3cyclictest1329317-21kworker/u8:0+events_unbound20:57:561
1247892994437,5cyclictest1324150-21kworker/u8:3+events_unbound20:37:551
1247892994137,3cyclictest1324150-21kworker/u8:3+events_unbound21:03:011
1247892994136,4cyclictest1388457-21kworker/u8:0+events_unbound22:27:541
1247892994136,4cyclictest1388457-21kworker/u8:0+events_unbound22:27:541
1247892994134,5cyclictest1538075-21apt-get00:02:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional