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2026-05-04 - 05:11

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 04, 2026 00:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20088672424413,7sleep40-21swapper/419:07:0910
20090032372332,14sleep150-21swapper/1519:08:577
20088572372331,13sleep110-21swapper/1119:07:003
20090452360322,30sleep00-21swapper/019:09:300
20056122359340,12sleep130-21swapper/1319:05:105
20087922356345,7sleep80-21swapper/819:06:0914
20088742354319,12sleep90-21swapper/919:07:1515
20088702354334,12sleep50-21swapper/519:07:1111
20090342352332,13sleep60-21swapper/619:09:2012
20089742352333,12sleep100-21swapper/1019:08:362
20090062351332,13sleep10-21swapper/119:08:591
20087412351332,12sleep30-21swapper/319:05:329
20090172350332,12sleep120-21swapper/1219:09:094
20089602350329,14sleep140-21swapper/1419:08:246
20075652350330,13sleep70-21swapper/719:05:2013
20088222349329,13sleep20-21swapper/219:06:358
200954199469,11cyclictest0-21swapper/1421:24:056
200954199459,11cyclictest0-21swapper/1421:13:066
200954199448,11cyclictest0-21swapper/1423:24:546
200954199448,11cyclictest0-21swapper/1422:51:576
200954199448,11cyclictest0-21swapper/1422:40:586
200954199448,11cyclictest0-21swapper/1420:40:096
200954199438,10cyclictest0-21swapper/1423:02:566
200954199438,10cyclictest0-21swapper/1420:07:126
200954199438,10cyclictest0-21swapper/1400:30:486
200954199416,10cyclictest0-21swapper/1422:29:596
200954199415,11cyclictest0-21swapper/1420:51:086
200954199405,10cyclictest0-21swapper/1400:08:506
200954199405,10cyclictest0-21swapper/1400:08:506
200954199404,11cyclictest0-21swapper/1423:35:536
2009536993737,0cyclictest0-21swapper/1200:28:004
2009536993636,0cyclictest0-21swapper/1221:18:114
2009536993636,0cyclictest0-21swapper/1200:35:154
200953699356,29cyclictest0-21swapper/1222:47:314
2009536993535,0cyclictest0-21swapper/1221:57:354
2009536993434,0cyclictest2084033-21kworker/12:1-events20:37:254
2009536993434,0cyclictest0-21swapper/1220:27:344
2009519993434,0cyclictest0-21swapper/600:24:2912
200954199339,24cyclictest0-21swapper/1419:45:146
200954199338,25cyclictest0-21swapper/1421:35:046
200954199338,25cyclictest0-21swapper/1421:02:076
200954199338,25cyclictest0-21swapper/1421:02:076
200954099330,32cyclictest0-21swapper/1323:45:155
2009536993333,0cyclictest0-21swapper/1220:31:314
200953399330,30cyclictest0-21swapper/1121:10:153
2009515993329,3cyclictest0-21swapper/519:25:1511
200951599330,30cyclictest0-21swapper/519:45:1511
200950699330,32cyclictest0-21swapper/223:40:058
2009504993330,3cyclictest1774-21snmpd00:18:561
2009504993330,3cyclictest1774-21snmpd00:18:561
200954199328,24cyclictest0-21swapper/1422:19:006
200954199327,25cyclictest0-21swapper/1419:56:136
2009515993228,4cyclictest1774-21snmpd21:17:2611
200951599320,31cyclictest0-21swapper/500:00:1511
200950699320,29cyclictest0-21swapper/223:27:318
200950699320,29cyclictest0-21swapper/221:46:178
200950699320,29cyclictest0-21swapper/200:36:558
200950499320,30cyclictest0-21swapper/120:46:401
200949999320,29cyclictest0-21swapper/020:50:150
200954699310,30cyclictest0-21swapper/1521:19:537
2009541993129,1cyclictest0-21swapper/1420:15:126
200954199310,30cyclictest2110673-21diskmemload21:41:396
200954199310,30cyclictest0-21swapper/1421:47:366
200954099310,30cyclictest0-21swapper/1320:14:395
200953399310,30cyclictest0-21swapper/1121:20:133
200953099310,30cyclictest0-21swapper/1023:10:152
200952599310,30cyclictest0-21swapper/821:26:5714
200952599310,30cyclictest0-21swapper/819:27:1114
2009520993131,0cyclictest0-21swapper/723:03:2513
2009520993131,0cyclictest0-21swapper/721:22:0713
2009520993130,0cyclictest0-21swapper/721:50:2313
2009519993131,0cyclictest0-21swapper/621:36:1312
2009519993130,1cyclictest1774-21snmpd20:17:4912
2009509993130,1cyclictest1774-21snmpd21:09:599
2009509993130,1cyclictest1774-21snmpd21:09:599
200950699310,30cyclictest0-21swapper/200:05:158
200950699310,30cyclictest0-21swapper/200:05:158
200950499310,30cyclictest0-21swapper/123:45:151
2009499993130,1cyclictest1774-21snmpd00:27:440
200954699307,1cyclictest0-21swapper/1519:57:267
200954699300,30cyclictest0-21swapper/1521:53:017
200954699300,30cyclictest0-21swapper/1520:19:227
200954699300,1cyclictest0-21swapper/1521:42:157
200954199305,25cyclictest0-21swapper/1423:46:526
200954199305,25cyclictest0-21swapper/1421:57:026
200954199300,1cyclictest0-21swapper/1422:34:506
200954199300,1cyclictest0-21swapper/1419:20:146
2009540993029,1cyclictest2209763-21nodev-device-ev22:25:165
2009540993029,1cyclictest1774-21snmpd23:00:335
2009540993029,1cyclictest1774-21snmpd19:13:055
2009540993029,1cyclictest1774-21snmpd00:15:175
2009540993029,1cyclictest1774-21snmpd00:15:175
2009540993029,1cyclictest1774-21snmpd00:07:445
2009540993029,1cyclictest1774-21snmpd00:07:445
200954099300,30cyclictest0-21swapper/1323:36:525
200954099300,29cyclictest0-21swapper/1319:26:205
200954099300,1cyclictest0-21swapper/1322:21:465
2009536993030,0cyclictest0-21swapper/1221:06:294
2009536993030,0cyclictest0-21swapper/1221:06:294
2009536993030,0cyclictest0-21swapper/1220:15:514
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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