You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-01-11 - 10:40

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 Sun Jan 11, 2026 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391790,2ptp4l0-21swapper/119:05:151
325242640,1sleep233-21ksoftirqd/222:20:032
111391620,30ptp4l0-21swapper/019:05:490
1881916050,6phc2sys0-21swapper/419:09:454
2111925949,6sleep70-21swapper/719:06:027
111391590,6ptp4l0-21swapper/519:08:415
238372580,1sleep233-21ksoftirqd/219:15:012
2143425835,7sleep30-21swapper/319:09:573
2113225343,6sleep20-21swapper/219:06:122
254682510,0sleep50-21swapper/500:22:545
2120424736,6sleep60-21swapper/619:07:046
111391350,0ptp4l0-21swapper/000:35:200
111391320,0ptp4l0-21swapper/523:47:025
111391320,0ptp4l0-21swapper/523:09:525
111391320,0ptp4l0-21swapper/522:52:225
111391310,0ptp4l0-21swapper/522:35:215
111391310,0ptp4l0-21swapper/521:47:075
111391310,0ptp4l0-21swapper/119:55:011
111391310,0ptp4l0-21swapper/021:51:420
111391300,4ptp4l0-21swapper/523:50:495
111391300,1ptp4l12094-21ksmtuned21:50:301
111391300,0ptp4l0-21swapper/522:42:505
111391300,0ptp4l0-21swapper/222:45:112
111391300,0ptp4l0-21swapper/123:48:071
111391300,0ptp4l0-21swapper/121:18:561
111391290,0ptp4l0-21swapper/700:20:177
111391290,0ptp4l0-21swapper/523:00:185
111391290,0ptp4l0-21swapper/522:58:355
111391290,0ptp4l0-21swapper/422:16:004
111391290,0ptp4l0-21swapper/123:11:281
111391290,0ptp4l0-21swapper/121:20:151
111391280,2ptp4l0-21swapper/121:29:221
111391280,1ptp4l0-21swapper/122:04:561
111391280,0ptp4l0-21swapper/523:35:165
111391280,0ptp4l0-21swapper/523:27:565
111391280,0ptp4l0-21swapper/521:38:135
111391280,0ptp4l0-21swapper/520:49:295
111391280,0ptp4l0-21swapper/421:52:184
111391280,0ptp4l0-21swapper/222:31:342
111391280,0ptp4l0-21swapper/122:38:111
111391280,0ptp4l0-21swapper/121:36:031
111391280,0ptp4l0-21swapper/022:17:080
111391280,0ptp4l0-21swapper/000:17:120
111391270,0ptp4l0-21swapper/523:31:335
111391270,0ptp4l0-21swapper/523:10:285
111391270,0ptp4l0-21swapper/522:30:115
111391270,0ptp4l0-21swapper/522:15:225
111391270,0ptp4l0-21swapper/522:13:315
111391270,0ptp4l0-21swapper/522:01:185
111391270,0ptp4l0-21swapper/521:43:265
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional