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2026-07-08 - 20:48

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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 
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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 rackbslot8s (updated Wed Jul 08, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23934212799,23sleep60-21swapper/607:06:016
23934212799,23sleep60-21swapper/607:06:006
241232117103,9sleep70-21swapper/707:08:417
241232117103,9sleep70-21swapper/707:08:417
240042116101,10sleep20-21swapper/207:07:002
240042116101,10sleep20-21swapper/207:07:002
239242116103,8sleep50-21swapper/507:05:525
239242116103,8sleep50-21swapper/507:05:515
240702115100,10sleep30-21swapper/307:07:583
240702115100,10sleep30-21swapper/307:07:573
239662115101,9sleep00-21swapper/007:06:260
239662115101,9sleep00-21swapper/007:06:260
240442114100,9sleep40-21swapper/407:07:354
240442114100,9sleep40-21swapper/407:07:344
23947211485,9sleep10-21swapper/107:06:111
23947211485,9sleep10-21swapper/107:06:111
2445799104100,3cyclictest553-21snmpd08:34:403
24454991030,102cyclictest86425-21diskmemload10:11:072
24449991030,100cyclictest0-21swapper/109:55:141
24449991030,100cyclictest0-21swapper/107:14:071
244579910299,3cyclictest553-21snmpd12:23:033
244579910299,3cyclictest553-21snmpd10:17:083
244579910299,3cyclictest553-21snmpd08:21:193
244579910299,3cyclictest553-21snmpd07:59:453
244499910299,3cyclictest77223-21cat08:50:151
24449991020,99cyclictest0-21swapper/112:04:591
24473991010,0cyclictest0-21swapper/712:01:147
2446899101100,1cyclictest553-21snmpd10:29:396
2446899101100,1cyclictest176111-21kworker/6:012:05:206
24468991010,100cyclictest0-21swapper/610:41:416
24465991010,100cyclictest0-21swapper/511:07:125
244629910199,2cyclictest553-21snmpd11:43:434
244629910199,1cyclictest605-21lldpd08:55:244
24462991010,101cyclictest0-21swapper/410:41:324
24462991010,100cyclictest0-21swapper/409:48:044
24462991010,100cyclictest0-21swapper/407:23:014
244579910199,2cyclictest553-21snmpd11:50:193
244579910199,2cyclictest553-21snmpd09:11:503
244579910199,2cyclictest553-21snmpd08:38:253
244579910199,2cyclictest553-21snmpd08:27:013
244579910199,2cyclictest553-21snmpd08:06:543
2445799101100,1cyclictest553-21snmpd09:25:363
244549910198,3cyclictest553-21snmpd08:17:392
24454991010,0cyclictest0-21swapper/211:44:372
244499910198,3cyclictest553-21snmpd12:11:081
244499910198,3cyclictest553-21snmpd10:16:381
244499910198,1cyclictest553-21snmpd10:33:171
24449991010,101cyclictest0-21swapper/109:40:151
24445991010,100cyclictest0-21swapper/008:19:250
24473991000,99cyclictest0-21swapper/711:25:257
24473991000,99cyclictest0-21swapper/709:01:387
24473991000,100cyclictest0-21swapper/708:33:167
244689910099,1cyclictest553-21snmpd07:47:116
244689910099,1cyclictest0-21swapper/609:26:306
2446899100100,0cyclictest553-21snmpd09:55:586
24468991000,99cyclictest0-21swapper/612:18:386
24468991000,99cyclictest0-21swapper/610:59:456
24468991000,99cyclictest0-21swapper/609:17:546
24468991000,100cyclictest0-21swapper/608:17:486
244659910099,1cyclictest85107-21cat09:05:155
244659910099,1cyclictest553-21snmpd10:57:125
244659910099,1cyclictest553-21snmpd10:21:385
244659910099,1cyclictest553-21snmpd10:10:555
244659910099,1cyclictest553-21snmpd07:19:525
244659910099,1cyclictest553-21snmpd07:10:495
244659910098,2cyclictest553-21snmpd11:41:525
24465991000,99cyclictest0-21swapper/509:36:125
24465991000,99cyclictest0-21swapper/509:00:025
24465991000,99cyclictest0-21swapper/508:50:025
24465991000,99cyclictest0-21swapper/507:21:315
244629910099,1cyclictest553-21snmpd11:35:354
244629910099,1cyclictest553-21snmpd11:35:344
244629910099,1cyclictest553-21snmpd11:00:184
244629910099,1cyclictest553-21snmpd08:01:364
244629910099,1cyclictest553-21snmpd07:30:414
244629910099,1cyclictest0-21swapper/407:50:444
244629910098,2cyclictest553-21snmpd10:49:044
2446299100100,0cyclictest0-21swapper/408:16:164
24462991000,99cyclictest0-21swapper/410:33:264
24462991000,99cyclictest0-21swapper/408:36:314
24462991000,100cyclictest0-21swapper/411:08:484
24462991000,100cyclictest0-21swapper/410:55:094
244579910099,1cyclictest553-21snmpd11:37:253
244579910099,1cyclictest553-21snmpd11:37:253
244579910099,1cyclictest553-21snmpd08:10:373
244579910098,2cyclictest553-21snmpd11:26:553
244579910098,2cyclictest553-21snmpd10:43:123
244579910098,2cyclictest553-21snmpd09:57:433
244579910098,2cyclictest553-21snmpd09:22:033
244549910099,1cyclictest553-21snmpd08:47:472
244549910099,1cyclictest553-21snmpd07:19:372
244549910098,2cyclictest553-21snmpd09:50:082
244549910098,2cyclictest0-21swapper/211:07:012
24454991000,99cyclictest0-21swapper/211:54:442
24454991000,99cyclictest0-21swapper/211:39:522
24454991000,99cyclictest0-21swapper/211:39:522
24454991000,99cyclictest0-21swapper/210:41:092
24454991000,99cyclictest0-21swapper/210:28:472
24454991000,99cyclictest0-21swapper/210:24:262
24454991000,99cyclictest0-21swapper/209:47:062
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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