You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-04 - 19:41

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 100 highest latencies:
System rackcslot8s.osadl.org (updated Mon May 04, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1346926050,6sleep20-21swapper/207:05:352
111391600,6ptp4l0-21swapper/507:08:135
111391600,5ptp4l0-21swapper/107:07:531
1376625747,6sleep70-21swapper/707:09:247
111391570,22ptp4l0-21swapper/007:08:220
111391550,4ptp4l0-21swapper/407:09:094
285992530,1sleep557-21ksoftirqd/511:04:305
1347024836,7sleep30-21swapper/307:05:363
1371924737,6sleep60-21swapper/607:08:516
111391330,0ptp4l0-21swapper/010:31:160
111391320,0ptp4l0-21swapper/709:10:167
111391320,0ptp4l0-21swapper/410:43:064
111391320,0ptp4l0-21swapper/409:00:144
111391320,0ptp4l0-21swapper/409:00:144
111391320,0ptp4l0-21swapper/111:50:161
111391310,2ptp4l0-21swapper/409:50:204
111391310,0ptp4l0-21swapper/509:53:245
111391310,0ptp4l0-21swapper/410:06:124
111391310,0ptp4l0-21swapper/110:55:131
111391310,0ptp4l0-21swapper/012:32:310
111391300,0ptp4l0-21swapper/509:45:065
111391300,0ptp4l0-21swapper/409:42:074
111391300,0ptp4l0-21swapper/409:20:394
111391300,0ptp4l0-21swapper/112:03:081
111391300,0ptp4l0-21swapper/012:24:510
111391300,0ptp4l0-21swapper/011:37:160
111391300,0ptp4l0-21swapper/010:35:100
111391300,0ptp4l0-21swapper/009:40:200
111391290,4ptp4l0-21swapper/409:55:454
111391290,0ptp4l0-21swapper/510:09:565
111391290,0ptp4l0-21swapper/510:00:125
111391290,0ptp4l0-21swapper/412:32:294
111391290,0ptp4l0-21swapper/412:21:584
111391290,0ptp4l0-21swapper/412:09:044
111391290,0ptp4l0-21swapper/411:46:374
111391290,0ptp4l0-21swapper/411:30:464
111391290,0ptp4l0-21swapper/410:55:094
111391290,0ptp4l0-21swapper/409:30:114
111391290,0ptp4l0-21swapper/012:35:420
111391290,0ptp4l0-21swapper/012:29:200
111391290,0ptp4l0-21swapper/011:19:410
111391290,0ptp4l0-21swapper/010:16:220
111391290,0ptp4l0-21swapper/009:51:500
111391290,0ptp4l0-21swapper/009:31:300
111391280,2ptp4l0-21swapper/009:12:300
111391280,0ptp4l0-21swapper/510:54:055
111391280,0ptp4l0-21swapper/412:04:254
111391280,0ptp4l0-21swapper/411:52:204
111391280,0ptp4l0-21swapper/410:37:154
111391280,0ptp4l0-21swapper/109:44:101
111391280,0ptp4l0-21swapper/011:55:120
111391280,0ptp4l0-21swapper/010:56:200
111391280,0ptp4l0-21swapper/009:17:290
1411599270,26cyclictest0-21swapper/610:56:376
111391270,7ptp4l0-21swapper/409:11:404
111391270,0ptp4l0-21swapper/412:28:454
111391270,0ptp4l0-21swapper/410:27:214
111391270,0ptp4l0-21swapper/409:28:204
111391270,0ptp4l0-21swapper/409:19:304
111391270,0ptp4l0-21swapper/112:15:001
111391270,0ptp4l0-21swapper/110:52:331
111391270,0ptp4l0-21swapper/011:11:000
111391270,0ptp4l0-21swapper/010:27:510
111391270,0ptp4l0-21swapper/010:23:060
111391270,0ptp4l0-21swapper/009:58:050
111391260,1ptp4l0-21swapper/011:21:320
111391260,0ptp4l0-21swapper/511:50:185
111391260,0ptp4l0-21swapper/509:05:135
111391260,0ptp4l0-21swapper/412:15:124
111391260,0ptp4l0-21swapper/411:40:334
111391260,0ptp4l0-21swapper/411:40:334
111391260,0ptp4l0-21swapper/411:12:094
111391260,0ptp4l0-21swapper/411:02:014
111391260,0ptp4l0-21swapper/410:20:364
111391260,0ptp4l0-21swapper/410:12:524
111391260,0ptp4l0-21swapper/309:10:523
111391260,0ptp4l0-21swapper/112:19:501
111391260,0ptp4l0-21swapper/111:47:511
111391260,0ptp4l0-21swapper/109:38:281
111391260,0ptp4l0-21swapper/012:11:500
111391260,0ptp4l0-21swapper/011:09:520
111391260,0ptp4l0-21swapper/011:03:130
111391260,0ptp4l0-21swapper/010:04:250
111391250,1ptp4l19756-21fw_forwarded_lo07:20:125
111391250,0ptp4l0-21swapper/510:46:345
111391250,0ptp4l0-21swapper/507:35:125
111391250,0ptp4l0-21swapper/411:23:094
111391250,0ptp4l0-21swapper/411:17:454
111391250,0ptp4l0-21swapper/410:30:344
111391250,0ptp4l0-21swapper/407:30:164
111391250,0ptp4l0-21swapper/407:29:014
111391250,0ptp4l0-21swapper/407:15:024
111391250,0ptp4l0-21swapper/112:32:071
111391250,0ptp4l0-21swapper/111:01:171
111391250,0ptp4l0-21swapper/107:45:181
111391250,0ptp4l0-21swapper/010:50:110
111391250,0ptp4l0-21swapper/010:48:140
111391250,0ptp4l0-21swapper/010:05:570
111391250,0ptp4l0-21swapper/009:35:270
1410899240,0cyclictest0-21swapper/507:43:475
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional