You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-27 - 20:59

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 May 27, 2026 12:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
106882650,0sleep30-21swapper/310:15:193
111391630,5ptp4l0-21swapper/107:07:111
111391610,5ptp4l0-21swapper/507:05:285
209462590,0sleep30-21swapper/311:59:013
1881915936,7phc2sys0-21swapper/707:09:187
259722580,0sleep30-21swapper/309:54:123
142025836,6sleep40-21swapper/407:09:234
125625645,6sleep20-21swapper/207:07:202
121625332,6sleep60-21swapper/607:06:526
145524836,7sleep00-21swapper/007:09:510
113124735,7sleep30-21swapper/307:05:453
111391330,0ptp4l0-21swapper/611:40:186
111391330,0ptp4l0-21swapper/509:11:555
111391320,0ptp4l0-21swapper/509:20:125
111391320,0ptp4l0-21swapper/211:00:182
111391310,0ptp4l0-21swapper/612:01:146
111391310,0ptp4l0-21swapper/610:25:206
111391310,0ptp4l0-21swapper/608:35:156
111391310,0ptp4l0-21swapper/511:05:555
111391310,0ptp4l0-21swapper/009:25:150
111391300,3ptp4l0-21swapper/212:30:422
111391300,0ptp4l0-21swapper/612:37:536
111391300,0ptp4l0-21swapper/612:10:126
111391300,0ptp4l0-21swapper/610:59:066
111391300,0ptp4l0-21swapper/609:16:296
111391300,0ptp4l0-21swapper/510:00:185
111391300,0ptp4l0-21swapper/211:26:142
111391300,0ptp4l0-21swapper/210:10:162
111391290,3ptp4l0-21swapper/309:30:383
111391290,2ptp4l0-21swapper/509:55:415
111391290,0ptp4l0-21swapper/612:30:096
111391290,0ptp4l0-21swapper/611:25:576
111391290,0ptp4l0-21swapper/611:09:146
111391290,0ptp4l0-21swapper/610:53:196
111391290,0ptp4l0-21swapper/609:59:146
111391290,0ptp4l0-21swapper/511:48:425
111391290,0ptp4l0-21swapper/410:39:424
111391290,0ptp4l0-21swapper/209:18:112
111391290,0ptp4l0-21swapper/112:09:321
111391290,0ptp4l0-21swapper/011:11:090
111391280,2ptp4l0-21swapper/609:49:336
111391280,0ptp4l0-21swapper/712:25:507
111391280,0ptp4l0-21swapper/610:43:566
111391280,0ptp4l0-21swapper/409:10:594
111391280,0ptp4l0-21swapper/211:40:482
111391280,0ptp4l0-21swapper/210:37:012
111391280,0ptp4l0-21swapper/011:53:350
111391280,0ptp4l0-21swapper/009:54:310
111391270,2ptp4l0-21swapper/211:11:352
111391270,1ptp4l6788-21sleep07:20:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional