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2026-05-18 - 21:27

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack0slot4s.osadl.org (updated Mon May 18, 2026 00:46:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28599152361321,32sleep70-21swapper/719:09:4013
28599152361321,32sleep70-21swapper/719:09:3913
28597522359339,13sleep150-21swapper/1519:07:247
28597522359339,13sleep150-21swapper/1519:07:237
28598172355313,13sleep40-21swapper/419:08:1710
28598172355313,13sleep40-21swapper/419:08:1610
28598572354334,13sleep100-21swapper/1019:08:552
28598572354334,13sleep100-21swapper/1019:08:542
28598522352332,13sleep50-21swapper/519:08:4911
28598522352332,13sleep50-21swapper/519:08:4911
28596672352335,11sleep30-21swapper/319:06:239
28596672352335,11sleep30-21swapper/319:06:229
28596472351330,14sleep20-21swapper/219:06:068
28596472351330,14sleep20-21swapper/219:06:058
28597302350313,13sleep140-21swapper/1419:07:066
28597302350313,13sleep140-21swapper/1419:07:056
28596292350330,13sleep90-21swapper/919:05:5715
28596292350330,13sleep90-21swapper/919:05:5615
28598742349328,13sleep10-21swapper/119:09:021
28598742349328,13sleep10-21swapper/119:09:021
28564612349328,14sleep60-21swapper/619:05:0612
28564612349328,14sleep60-21swapper/619:05:0512
28599032347326,14sleep120-21swapper/1219:09:294
28599032347326,14sleep120-21swapper/1219:09:284
28596982347326,14sleep110-21swapper/1119:06:473
28596982347326,14sleep110-21swapper/1119:06:463
28596582347328,13sleep130-21swapper/1319:06:175
28596582347328,13sleep130-21swapper/1319:06:165
28598042346326,13sleep80-21swapper/819:08:0514
28598042346326,13sleep80-21swapper/819:08:0414
28595972340319,14sleep00-21swapper/019:05:320
28595972340319,14sleep00-21swapper/019:05:310
286037599437,11cyclictest0-21swapper/1400:25:126
2860372994343,0cyclictest0-21swapper/1322:39:535
286037599426,11cyclictest0-21swapper/1423:30:186
286037599426,11cyclictest0-21swapper/1423:08:206
286037599426,11cyclictest0-21swapper/1421:18:296
286037599415,11cyclictest0-21swapper/1423:19:196
286037599415,11cyclictest0-21swapper/1421:40:276
286037599415,11cyclictest0-21swapper/1419:50:386
286037599404,11cyclictest0-21swapper/1400:36:126
2860375993834,4cyclictest0-21swapper/1422:39:536
2860372993838,0cyclictest3122178-21kworker/13:0+mm_percpu_wq23:56:405
2860375993713,11cyclictest0-21swapper/1420:45:336
2860375993636,0cyclictest0-21swapper/1400:22:176
2860375993531,4cyclictest1491rcuc/1423:56:416
2860372993535,0cyclictest0-21swapper/1323:25:405
2860372993535,0cyclictest0-21swapper/1300:31:395
2860372993535,0cyclictest0-21swapper/1300:22:175
286037599345,11cyclictest0-21swapper/1421:07:306
286037599344,5cyclictest0-21swapper/1419:17:426
286037599344,5cyclictest0-21swapper/1419:17:416
2860375993410,11cyclictest0-21swapper/1420:12:366
2860372993434,0cyclictest0-21swapper/1321:59:555
2860372993434,0cyclictest0-21swapper/1300:13:195
2860344993429,4cyclictest3015345-21ethtool21:50:1610
286037599334,29cyclictest0-21swapper/1421:59:566
2860372993333,0cyclictest0-21swapper/1319:15:185
2860372993333,0cyclictest0-21swapper/1319:15:175
2860344993329,0cyclictest2884339-21mii-tool19:35:1410
2860375993232,0cyclictest0-21swapper/1400:19:156
2860372993232,0cyclictest0-21swapper/1322:42:395
2860372993232,0cyclictest0-21swapper/1300:06:075
286036499320,29cyclictest0-21swapper/1022:35:132
286036199320,1cyclictest0-21swapper/922:25:2715
286034999320,29cyclictest0-21swapper/520:15:1611
286038099310,30cyclictest0-21swapper/1522:37:017
286037599316,25cyclictest0-21swapper/1422:46:216
286037599316,25cyclictest0-21swapper/1420:23:356
286037599316,0cyclictest0-21swapper/1422:57:216
286037599316,0cyclictest0-21swapper/1422:24:246
286037599316,0cyclictest0-21swapper/1422:24:236
286037599316,0cyclictest0-21swapper/1422:13:256
286037599316,0cyclictest0-21swapper/1400:14:146
286037599315,26cyclictest0-21swapper/1419:39:396
2860375993131,0cyclictest0-21swapper/1423:14:126
2860375993131,0cyclictest0-21swapper/1422:09:356
2860375993131,0cyclictest0-21swapper/1419:57:556
286037299310,30cyclictest0-21swapper/1323:00:175
2860364993130,1cyclictest3107713-21kworker/10:2+events23:50:152
2860364993130,1cyclictest2708609-21kworker/10:2+events21:50:272
2860364993129,1cyclictest3107713-21kworker/10:2+events23:41:202
2860364993129,1cyclictest3050245-21kworker/10:1+events22:18:482
2860364993129,1cyclictest3050245-21kworker/10:1+events22:18:472
2860364993129,1cyclictest2708609-21kworker/10:2+events21:46:162
2860364993129,1cyclictest2708609-21kworker/10:2+events21:10:142
286036499310,30cyclictest0-21swapper/1023:48:182
286036499310,30cyclictest0-21swapper/1020:42:582
286036499310,30cyclictest0-21swapper/1020:31:372
286036499310,30cyclictest0-21swapper/1019:35:152
2860361993130,1cyclictest1774-21snmpd21:17:0415
2860361993127,4cyclictest1774-21snmpd00:30:4015
2860358993130,1cyclictest1774-21snmpd23:23:0414
286035899310,30cyclictest0-21swapper/820:30:1614
286035899310,30cyclictest0-21swapper/800:30:1714
286035499310,30cyclictest0-21swapper/721:31:2613
286035499310,30cyclictest0-21swapper/719:58:0813
286035199310,30cyclictest0-21swapper/621:47:5012
2860349993130,1cyclictest1774-21snmpd23:56:1411
286034999310,30cyclictest0-21swapper/523:00:0111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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