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2026-06-22 - 13:39

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 Jun 22, 2026 00:46:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31801322363341,14sleep150-21swapper/1519:06:387
31801232360319,13sleep60-21swapper/619:06:2912
31803632358337,14sleep140-21swapper/1419:09:356
31801152355315,14sleep10-21swapper/119:06:241
31800812352332,13sleep50-21swapper/519:05:5511
31800592352333,12sleep90-21swapper/919:05:4315
31803092349330,13sleep40-21swapper/419:08:5110
31800572349328,13sleep70-21swapper/719:05:4113
31803392348328,13sleep110-21swapper/1119:09:153
31801902347333,9sleep100-21swapper/1019:07:212
31802882346326,13sleep00-21swapper/019:08:310
31802902345325,13sleep20-21swapper/219:08:338
31801672345325,13sleep80-21swapper/819:07:0314
31801962344322,14sleep130-21swapper/1319:07:245
31800782344323,14sleep30-21swapper/319:05:539
31800422343322,14sleep120-21swapper/1219:05:304
3180855993529,1cyclictest1774-21snmpd23:25:353
318082099350,1cyclictest0-21swapper/000:10:190
318082099350,1cyclictest0-21swapper/000:10:180
318082099330,30cyclictest0-21swapper/021:15:150
318082099330,30cyclictest0-21swapper/021:15:150
3180851993230,1cyclictest2937463-21kworker/10:1+events21:10:302
3180851993230,1cyclictest2937463-21kworker/10:1+events21:10:292
318082899320,29cyclictest3327753-21ssh21:45:018
3180820993229,3cyclictest1774-21snmpd23:38:510
3180866993130,1cyclictest1774-21snmpd23:20:087
318086699310,30cyclictest0-21swapper/1520:00:257
318086699310,30cyclictest0-21swapper/1519:45:597
3180861993130,1cyclictest1774-21snmpd19:29:436
3180861993129,1cyclictest1774-21snmpd20:28:026
318086199310,30cyclictest0-21swapper/1419:13:516
318086099310,30cyclictest0-21swapper/1321:41:155
318085599310,30cyclictest0-21swapper/1122:16:273
3180851993130,1cyclictest2937463-21kworker/10:1+events21:15:282
3180851993130,1cyclictest2937463-21kworker/10:1+events21:15:272
3180851993130,0cyclictest3320773-21kworker/10:1+events21:45:012
318084999310,30cyclictest0-21swapper/920:53:4215
318084999310,30cyclictest0-21swapper/920:48:1215
318084999310,30cyclictest0-21swapper/920:25:3315
318084999310,30cyclictest0-21swapper/919:46:4015
318084399310,30cyclictest0-21swapper/723:16:2113
318084399310,30cyclictest0-21swapper/722:36:1613
318084399310,30cyclictest0-21swapper/721:26:5813
318083999310,30cyclictest0-21swapper/622:35:1012
318083499310,30cyclictest0-21swapper/421:01:3310
318083499310,30cyclictest0-21swapper/420:02:4410
3180830993130,1cyclictest0-21swapper/300:20:389
3180830993130,1cyclictest0-21swapper/300:20:379
318083099310,28cyclictest0-21swapper/321:20:169
3180828993129,1cyclictest3297262-21ethtool21:20:178
318082899310,30cyclictest0-21swapper/220:50:018
318082499310,30cyclictest0-21swapper/123:03:531
318082499310,30cyclictest0-21swapper/120:26:001
318082499310,30cyclictest0-21swapper/100:20:151
318082499310,30cyclictest0-21swapper/100:20:141
3180820993129,2cyclictest0-21swapper/022:36:390
3180866993029,1cyclictest1774-21snmpd21:36:557
318086699300,29cyclictest0-21swapper/1521:29:467
318086699300,1cyclictest0-21swapper/1523:42:527
318086699300,1cyclictest0-21swapper/1523:25:567
318086199300,29cyclictest0-21swapper/1423:02:206
318086199300,1cyclictest0-21swapper/1400:04:156
3180860993029,1cyclictest1774-21snmpd22:42:035
318086099300,29cyclictest0-21swapper/1323:28:365
318086099300,29cyclictest0-21swapper/1320:30:545
3180857993029,1cyclictest1774-21snmpd21:00:574
318085799300,29cyclictest0-21swapper/1222:50:154
3180855993029,1cyclictest3292394-21kworker/u32:5+events_unbound21:40:183
3180855993029,1cyclictest1774-21snmpd23:21:333
3180855993029,1cyclictest0-21swapper/1120:30:083
318085599300,29cyclictest0-21swapper/1121:00:333
318085599300,29cyclictest0-21swapper/1120:55:163
3180851993029,1cyclictest3320773-21kworker/10:1+events21:51:402
3180851993029,1cyclictest3254951-21ethtool20:35:132
3180851993029,1cyclictest1774-21snmpd23:20:572
3180851993029,1cyclictest1774-21snmpd19:41:102
3180851993029,1cyclictest1774-21snmpd00:30:412
318085199300,30cyclictest0-21swapper/1020:49:482
318085199300,29cyclictest0-21swapper/1023:33:442
3180849993029,1cyclictest1774-21snmpd23:54:0315
3180849993029,1cyclictest1774-21snmpd00:02:4815
318084999300,30cyclictest0-21swapper/919:17:0615
318084999300,30cyclictest0-21swapper/919:14:4515
318084999300,30cyclictest0-21swapper/900:05:1715
318084999300,1cyclictest0-21swapper/923:05:1115
3180845993029,1cyclictest1774-21snmpd22:30:0914
318084599300,30cyclictest0-21swapper/823:58:2814
318084599300,30cyclictest0-21swapper/822:54:1014
318084599300,30cyclictest0-21swapper/820:07:1814
3180843993029,1cyclictest1774-21snmpd21:32:3513
3180843993029,1cyclictest1774-21snmpd19:43:3413
3180843993029,1cyclictest0-21swapper/722:07:2713
3180843993028,1cyclictest1774-21snmpd23:12:1313
318084399300,30cyclictest0-21swapper/721:03:0613
318083999300,30cyclictest0-21swapper/619:26:4512
3180836993029,1cyclictest1774-21snmpd19:23:4211
3180836993029,1cyclictest0-21swapper/522:14:1311
318083699300,30cyclictest0-21swapper/521:18:5911
318083699300,30cyclictest0-21swapper/521:18:5811
318083699300,29cyclictest0-21swapper/519:58:0711
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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