You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-29 - 19:37

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 Apr 29, 2026 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1881917049,15phc2sys0-21swapper/107:05:221
111391640,5ptp4l0-21swapper/507:09:565
111391610,30ptp4l0-21swapper/007:06:050
3151225949,6sleep70-21swapper/707:09:087
111391570,5ptp4l0-21swapper/407:07:394
143532560,0sleep3401ktimersoftd/312:31:203
3144425339,11sleep30-21swapper/307:08:163
111391520,5ptp4l0-21swapper/207:06:012
3152924837,6sleep60-21swapper/607:09:246
111391330,1ptp4l17956-21fw_packets09:45:135
111391330,0ptp4l0-21swapper/412:23:054
111391320,0ptp4l0-21swapper/511:10:155
111391320,0ptp4l0-21swapper/510:16:295
111391320,0ptp4l0-21swapper/411:41:154
111391320,0ptp4l0-21swapper/407:35:134
111391320,0ptp4l0-21swapper/407:35:124
111391310,0ptp4l0-21swapper/709:23:277
111391310,0ptp4l0-21swapper/410:21:324
111391310,0ptp4l0-21swapper/111:40:191
111391310,0ptp4l0-21swapper/108:40:181
111391300,0ptp4l0-21swapper/612:17:256
111391300,0ptp4l0-21swapper/412:34:214
111391300,0ptp4l0-21swapper/412:07:054
111391300,0ptp4l0-21swapper/411:47:214
111391300,0ptp4l0-21swapper/411:14:344
111391300,0ptp4l0-21swapper/410:00:054
111391300,0ptp4l0-21swapper/112:16:401
111391300,0ptp4l0-21swapper/110:04:071
111391300,0ptp4l0-21swapper/012:04:320
111391290,0ptp4l0-21swapper/511:55:195
111391290,0ptp4l0-21swapper/411:35:154
111391290,0ptp4l0-21swapper/410:42:554
111391290,0ptp4l0-21swapper/409:35:174
111391290,0ptp4l0-21swapper/409:25:534
111391290,0ptp4l0-21swapper/409:13:214
111391290,0ptp4l0-21swapper/408:20:154
111391290,0ptp4l0-21swapper/110:48:151
111391290,0ptp4l0-21swapper/109:17:131
111391290,0ptp4l0-21swapper/011:55:360
111391290,0ptp4l0-21swapper/011:52:330
111391290,0ptp4l0-21swapper/011:44:420
111391290,0ptp4l0-21swapper/010:25:130
111391290,0ptp4l0-21swapper/009:54:270
111391280,0ptp4l0-21swapper/510:03:055
111391280,0ptp4l0-21swapper/508:10:125
111391280,0ptp4l0-21swapper/411:54:304
111391280,0ptp4l0-21swapper/410:33:204
111391280,0ptp4l0-21swapper/409:50:444
111391280,0ptp4l0-21swapper/409:42:024
111391280,0ptp4l0-21swapper/409:00:124
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional