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2026-04-30 - 02:31

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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 
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Thu Apr 30, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3052521390,1sleep10-21swapper/122:00:571
32175211099,6sleep20-21swapper/219:06:302
32350210998,6sleep00-21swapper/019:08:440
31674210888,15sleep10-21swapper/119:05:241
32308210686,15sleep30-21swapper/319:08:103
123522770,1sleep012300-21copy22:20:000
84332700,0sleep20-21swapper/220:50:012
73252700,0sleep00-21swapper/020:45:180
32481993817,19cyclictest4666-21ssh22:10:112
32481993315,16cyclictest0-21swapper/223:10:102
110172280,0sleep30-21swapper/300:20:393
3248199212,7cyclictest0-21swapper/219:43:022
3248199210,19cyclictest0-21swapper/223:30:112
163942210,1sleep30-21swapper/321:45:003
3248199200,19cyclictest0-21swapper/222:30:122
77122190,0sleep00-21swapper/022:53:510
32482991916,2cyclictest26154-21kworker/u8:022:13:053
32481991914,3cyclictest25880-21ssh21:20:112
32482991815,2cyclictest9306-21kworker/u8:023:21:053
32482991815,2cyclictest9306-21kworker/u8:023:21:043
32482991815,2cyclictest15584-21kworker/u8:123:16:063
32482991714,2cyclictest9306-21kworker/u8:022:57:043
32482991714,2cyclictest26154-21kworker/u8:022:47:043
3247999171,14cyclictest0-21swapper/021:25:150
3248299161,3cyclictest5014-21ssh21:31:293
32482991613,2cyclictest14255-21kworker/u8:200:30:053
3248299161,13cyclictest7703-21df21:35:143
3248299161,13cyclictest19090-21ssh21:47:053
3248299161,13cyclictest0-21swapper/323:30:013
32481991612,2cyclictest0-21swapper/221:10:592
3248099160,14cyclictest4688-21cut20:40:141
3247999160,13cyclictest0-21swapper/023:30:140
3248299151,12cyclictest0-21swapper/323:53:513
3248299151,12cyclictest0-21swapper/322:05:543
32482991511,2cyclictest0-21swapper/320:30:153
32481991512,2cyclictest0-21swapper/200:38:372
3248199151,12cyclictest14544-21apt-get19:45:102
32481991510,3cyclictest0-21swapper/221:15:152
32480991512,2cyclictest3365-21kworker/u8:100:24:041
3248099150,3cyclictest19539-21munin-node1
3247999152,7cyclictest0-21swapper/023:00:010
3247999151,12cyclictest25874-21apt-get21:20:100
32479991510,3cyclictest18356-21ssh22:27:000
32479991510,3cyclictest13991-21apt-get00:25:050
32479991510,3cyclictest0-21swapper/022:42:240
32479991510,3cyclictest0-21swapper/021:44:270
32479991510,3cyclictest0-21swapper/000:20:190
32479991510,3cyclictest0-21swapper/000:01:010
3247999150,13cyclictest12589-21hddtemp_smartct23:00:140
32482991411,2cyclictest5648-21kworker/u8:123:38:063
32482991411,2cyclictest3057-21kworker/u8:122:54:053
32482991411,2cyclictest0-21swapper/321:55:353
32482991411,2cyclictest0-21swapper/300:18:473
3248299140,3cyclictest22397-21ssh21:15:293
3248299140,2cyclictest0-21swapper/322:04:473
3248299140,12cyclictest0-21swapper/322:25:203
3248199149,3cyclictest0-21swapper/220:36:042
3248199149,3cyclictest0-21swapper/220:36:032
3248199141,2cyclictest301ktimersoftd/220:15:172
32481991411,2cyclictest301ktimersoftd/223:19:352
32481991411,2cyclictest0-21swapper/200:24:102
32481991410,3cyclictest0-21swapper/221:55:582
3248199140,12cyclictest0-21swapper/221:34:592
3248199140,12cyclictest0-21swapper/220:30:152
32480991411,2cyclictest3365-21kworker/u8:100:12:051
32480991411,2cyclictest0-21swapper/121:15:151
32480991411,2cyclictest0-21swapper/119:56:021
32480991410,2cyclictest0-21swapper/121:20:111
3248099140,3cyclictest18712-21cut00:30:391
3248099140,2cyclictest0-21swapper/122:13:041
3248099140,13cyclictest0-21swapper/119:40:131
3248099140,12cyclictest0-21swapper/122:57:051
3248099140,12cyclictest0-21swapper/121:30:131
3248099140,12cyclictest0-21swapper/121:11:401
3248099140,12cyclictest0-21swapper/120:10:301
3248099140,12cyclictest0-21swapper/119:25:191
3247999149,3cyclictest32563-21wc20:30:000
3247999141,11cyclictest25907-21ssh21:55:310
3247999140,12cyclictest0-21swapper/021:45:450
89572130,2sleep10-21swapper/123:37:301
32482991310,2cyclictest16295-21diskmemload21:50:203
32482991310,2cyclictest0-21swapper/323:12:553
32482991310,2cyclictest0-21swapper/322:15:443
32482991310,2cyclictest0-21swapper/321:25:463
32482991310,2cyclictest0-21swapper/320:06:013
32482991310,2cyclictest0-21swapper/319:45:133
32482991310,2cyclictest0-21swapper/300:06:253
3248299130,2cyclictest0-21swapper/323:41:173
3248299130,2cyclictest0-21swapper/323:05:343
3248299130,2cyclictest0-21swapper/322:42:433
3248299130,2cyclictest0-21swapper/321:05:193
3248299130,2cyclictest0-21swapper/320:10:193
3248299130,2cyclictest0-21swapper/300:29:393
3248299130,2cyclictest0-21swapper/300:00:083
3248299130,12cyclictest16082-21ssh23:46:203
3248299130,12cyclictest12396-21ssh23:00:143
3248299130,12cyclictest0-21swapper/323:56:203
3248299130,12cyclictest0-21swapper/323:32:393
3248299130,12cyclictest0-21swapper/322:36:223
3248299130,12cyclictest0-21swapper/322:31:493
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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