You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-01-08 - 03:05

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 #c, slot #8

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 50 highest latencies:
System rackcslot8s.osadl.org (updated Wed Jan 07, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391620,31ptp4l0-21swapper/407:05:064
111391610,30ptp4l0-21swapper/107:09:061
221225646,6sleep70-21swapper/707:06:577
210825646,6sleep20-21swapper/207:05:402
89182540,0sleep50-21swapper/510:53:065
111391530,5ptp4l0-21swapper/007:06:350
111391500,5ptp4l0-21swapper/507:10:005
216724736,6sleep60-21swapper/607:06:246
3254924634,7sleep30-21swapper/307:05:003
111391350,0ptp4l0-21swapper/011:50:190
111391350,0ptp4l0-21swapper/010:45:190
111391340,1ptp4l0-21swapper/009:50:130
111391330,0ptp4l0-21swapper/010:03:210
111391320,0ptp4l0-21swapper/012:01:160
111391320,0ptp4l0-21swapper/009:10:090
111391310,0ptp4l0-21swapper/408:40:164
111391310,0ptp4l0-21swapper/209:35:152
111391310,0ptp4l0-21swapper/011:31:150
111391310,0ptp4l0-21swapper/010:20:120
111391310,0ptp4l0-21swapper/010:08:180
111391310,0ptp4l0-21swapper/008:30:130
111391300,0ptp4l0-21swapper/009:18:250
111391290,0ptp4l0-21swapper/611:53:296
111391290,0ptp4l0-21swapper/012:31:000
111391290,0ptp4l0-21swapper/010:40:000
111391280,2ptp4l0-21swapper/609:33:496
111391280,0ptp4l0-21swapper/210:57:502
111391280,0ptp4l0-21swapper/010:29:460
111391280,0ptp4l0-21swapper/009:31:130
111391280,0ptp4l0-21swapper/009:27:550
111391270,0ptp4l0-21swapper/412:25:564
111391270,0ptp4l0-21swapper/411:29:574
111391270,0ptp4l0-21swapper/009:59:430
111391270,0ptp4l0-21swapper/009:23:230
111391270,0ptp4l0-21swapper/008:00:150
111391260,6ptp4l0-21swapper/611:23:246
111391260,3ptp4l641ktimersoftd/612:15:046
111391260,1ptp4l29263-21ssh09:13:194
111391260,0ptp4l0-21swapper/412:07:394
111391260,0ptp4l0-21swapper/411:49:274
111391260,0ptp4l0-21swapper/411:37:574
111391260,0ptp4l0-21swapper/411:08:444
111391260,0ptp4l0-21swapper/410:11:374
111391260,0ptp4l0-21swapper/410:11:364
111391260,0ptp4l0-21swapper/409:53:524
111391260,0ptp4l0-21swapper/408:58:024
111391260,0ptp4l0-21swapper/408:15:144
111391260,0ptp4l0-21swapper/408:05:214
111391260,0ptp4l0-21swapper/012:22:320
111391260,0ptp4l0-21swapper/012:13:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional