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2026-04-29 - 11:36

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 Wed Apr 29, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16162302369328,13sleep20-21swapper/219:09:108
16128012369333,30sleep40-21swapper/419:05:1110
16161242365328,18sleep100-21swapper/1019:07:422
16162832364325,31sleep110-21swapper/1119:09:523
16162462363344,13sleep00-21swapper/019:09:230
16160972361341,13sleep70-21swapper/719:07:2213
16128542360318,13sleep60-21swapper/619:05:1212
16160932357337,13sleep50-21swapper/519:07:2111
16161092356335,14sleep130-21swapper/1319:07:285
16162922352332,13sleep10-21swapper/119:09:581
16162382351331,13sleep90-21swapper/919:09:1715
16162892350331,12sleep150-21swapper/1519:09:557
16162862349329,13sleep140-21swapper/1419:09:546
16161212349329,13sleep80-21swapper/819:07:3914
16160912347328,12sleep30-21swapper/319:07:199
16161622345326,12sleep120-21swapper/1219:08:164
16167359910345,29cyclictest0-21swapper/1220:23:014
1616739999131,30cyclictest0-21swapper/1320:23:005
1616745998932,29cyclictest0-21swapper/1520:23:017
1616720998022,30cyclictest0-21swapper/720:23:0113
161670899750,75cyclictest0-21swapper/320:23:019
1616711997214,58cyclictest0-21swapper/420:23:0210
1616733996261,1cyclictest3318-21Xorg20:23:003
1616713994444,0cyclictest3318-21Xorg20:23:0111
1616698994040,0cyclictest0-21swapper/021:16:420
161674399393,11cyclictest0-21swapper/1420:02:086
161674399380,25cyclictest0-21swapper/1422:13:556
1616702993737,0cyclictest0-21swapper/123:24:411
161674399360,35cyclictest1181-21switcheroo-cont20:23:016
161674399349,14cyclictest0-21swapper/1400:14:456
1616739993329,3cyclictest1774-21snmpd00:21:555
161673999330,32cyclictest0-21swapper/1319:32:065
161673399330,30cyclictest0-21swapper/1120:17:593
161672899330,32cyclictest0-21swapper/923:20:1315
161672399330,29cyclictest0-21swapper/819:15:1414
161672399330,29cyclictest0-21swapper/819:15:1414
161672099332,30cyclictest1839766-21ssh22:43:3013
1616702993333,0cyclictest0-21swapper/122:23:491
1616702993333,0cyclictest0-21swapper/122:23:491
1616702993333,0cyclictest0-21swapper/100:33:111
161674399328,11cyclictest0-21swapper/1423:41:476
161674399328,11cyclictest0-21swapper/1423:08:516
161674399328,11cyclictest0-21swapper/1421:19:006
161674399328,10cyclictest0-21swapper/1423:30:496
1616743993229,3cyclictest1774-21snmpd22:26:426
1616743993229,3cyclictest1774-21snmpd22:26:416
161674399320,31cyclictest0-21swapper/1421:08:106
161673999320,1cyclictest0-21swapper/1319:29:275
1616702993232,0cyclictest0-21swapper/100:04:111
1616698993232,0cyclictest0-21swapper/000:37:170
1616745993128,3cyclictest1774-21snmpd23:23:317
1616745993124,1cyclictest0-21swapper/1523:10:167
161674599310,30cyclictest0-21swapper/1500:22:147
161674399318,10cyclictest0-21swapper/1421:30:006
161674399317,11cyclictest0-21swapper/1420:57:036
161674399317,11cyclictest0-21swapper/1420:46:046
161674399317,11cyclictest0-21swapper/1419:29:106
161674399317,11cyclictest0-21swapper/1400:36:436
161673999310,31cyclictest0-21swapper/1321:13:155
161673999310,30cyclictest0-21swapper/1323:05:435
161673999310,30cyclictest0-21swapper/1322:13:495
161673399310,30cyclictest0-21swapper/1123:04:223
161673099310,30cyclictest0-21swapper/1023:56:532
161672899310,30cyclictest0-21swapper/923:05:1515
161672899310,30cyclictest0-21swapper/921:05:1615
161672399310,30cyclictest0-21swapper/820:42:4914
161672099310,30cyclictest0-21swapper/722:30:1613
161672099310,30cyclictest0-21swapper/719:55:3813
161672099310,30cyclictest0-21swapper/719:36:0213
1616718993129,1cyclictest0-21swapper/623:24:5512
161671899310,30cyclictest0-21swapper/620:06:1112
161671199310,30cyclictest0-21swapper/419:25:1610
161670899310,30cyclictest0-21swapper/322:53:369
161670899310,30cyclictest0-21swapper/321:55:169
161670499310,30cyclictest1794295-21ssh22:07:388
1616702993131,0cyclictest0-21swapper/123:13:401
1616702993131,0cyclictest0-21swapper/121:56:151
1616702993131,0cyclictest0-21swapper/121:37:361
1616702993131,0cyclictest0-21swapper/100:14:511
1616698993129,1cyclictest1774-21snmpd23:20:120
161669899310,30cyclictest0-21swapper/023:38:520
1616745993029,1cyclictest1774-21snmpd20:55:557
1616745993029,1cyclictest0-21swapper/1521:46:507
161674399307,10cyclictest0-21swapper/1419:40:096
161674399300,1cyclictest0-21swapper/1420:25:156
1616739993029,1cyclictest1774-21snmpd23:53:145
1616739993027,3cyclictest1791566-21mii-tool22:05:165
1616735993029,1cyclictest1774-21snmpd21:15:374
1616735993029,1cyclictest1774-21snmpd19:57:264
1616733993026,4cyclictest1774-21snmpd22:26:003
1616733993026,4cyclictest1774-21snmpd22:26:003
1616730993029,1cyclictest1915848-21kworker/10:0+events23:53:522
1616730993029,1cyclictest1774-21snmpd21:10:552
1616730993029,1cyclictest1774-21snmpd19:11:042
1616730993029,1cyclictest1774-21snmpd00:02:132
161673099300,30cyclictest0-21swapper/1021:38:402
1616728993029,1cyclictest1774-21snmpd21:20:3415
1616728993029,1cyclictest1774-21snmpd21:10:4215
1616728993029,1cyclictest1774-21snmpd20:40:3315
1616728993029,1cyclictest0-21swapper/922:40:3815
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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