You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-10-28 - 11:03

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 #4, slot #1

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.

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 rack4slot1s.osadl.org (updated Tue Oct 28, 2025 00:44:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
231621320,3chrt0-21swapper/321:48:313
231621320,3chrt0-21swapper/321:48:313
274521040,4chrt0-21swapper/323:13:373
274521040,4chrt0-21swapper/323:13:373
1305321020,3sleep30-21swapper/320:53:123
1305321020,3sleep30-21swapper/320:53:123
3263021010,4sleep132108-21/usr/sbin/munin00:33:311
3263021010,4sleep132108-21/usr/sbin/munin00:33:311
325172930,4sleep20-21swapper/221:43:282
325172930,4sleep20-21swapper/221:43:282
22312830,4sleep20-21swapper/200:38:342
22312830,4sleep20-21swapper/200:38:342
27142810,3sleep10-21swapper/121:48:371
27142810,3sleep10-21swapper/121:48:371
277722780,2sleep20-21swapper/220:03:382
277722780,2sleep20-21swapper/220:03:382
7518997250,14cyclictest55150irq/47-eth022:53:260
7518997250,14cyclictest55150irq/47-eth022:53:260
103432720,1chrt0-21swapper/120:43:371
103432720,1chrt0-21swapper/120:43:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional