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2026-04-05 - 01:14

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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 rack0slot6s.osadl.org (updated Sat Apr 04, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17316282260253,4sleep170-21swapper/1719:08:569
17282832259252,4sleep130-21swapper/1319:05:125
17316502234227,4sleep110-21swapper/1119:09:103
17316382232224,5sleep50-21swapper/519:09:0515
17316212229210,12sleep100-21swapper/1019:08:492
17314452229209,12sleep190-21swapper/1919:06:5711
17316632228209,12sleep10-21swapper/119:09:201
17314902228207,13sleep30-21swapper/319:07:2213
17313532228209,12sleep80-21swapper/819:06:0618
17316982227208,12sleep40-21swapper/419:09:4414
17313032227208,12sleep00-21swapper/019:05:380
17313132226209,10sleep70-21swapper/719:05:4517
17314642225205,12sleep90-21swapper/919:07:0819
17314392225206,12sleep150-21swapper/1519:06:537
17315442222203,12sleep120-21swapper/1219:07:524
17313832221202,12sleep60-21swapper/619:06:2516
17313052218200,11sleep20-21swapper/219:05:4012
17316272217198,12sleep160-21swapper/1619:08:558
17316292216197,12sleep180-21swapper/1819:08:5710
17314742214197,10sleep140-21swapper/1419:07:146
173212399756,30cyclictest0-21swapper/1921:32:0411
173209599270,16cyclictest0-21swapper/1120:55:593
173209199270,16cyclictest0-21swapper/1000:06:582
173205599270,16cyclictest472312-21qemu-system-x8621:56:580
173212399240,23cyclictest0-21swapper/1900:33:5911
1732105992319,3cyclictest472371-21CPU6
1732105992311,11cyclictest0-21swapper/1420:41:596
1732095992323,0cyclictest0-21swapper/1119:12:293
1732055992316,5cyclictest0-21swapper/019:10:480
173212399220,21cyclictest472370-21CPU11
173211299221,20cyclictest472371-21CPU8
173208699220,21cyclictest472371-21CPU19
173208699220,1cyclictest472371-21CPU19
1732081992218,4cyclictest0-21swapper/819:10:4818
173208199220,22cyclictest0-21swapper/823:35:1418
173208199220,22cyclictest0-21swapper/800:00:1718
173208199220,20cyclictest0-21swapper/821:30:1718
173212399210,20cyclictest0-21swapper/1919:10:2011
1732105992117,4cyclictest0-21swapper/1400:14:446
1732105992114,0cyclictest206850irq/155-eno100:05:126
173210599210,19cyclictest0-21swapper/1423:35:156
1732086992120,1cyclictest1985849-21systemd00:02:5919
173208699210,1cyclictest472371-21CPU19
1732123992020,0cyclictest0-21swapper/1923:05:1711
1732123992018,1cyclictest472370-21CPU11
173212399200,20cyclictest0-21swapper/1922:05:1611
173212399200,20cyclictest0-21swapper/1900:03:0511
1732120992020,0cyclictest0-21swapper/1819:10:0910
1732120992018,1cyclictest472370-21CPU10
173212099200,20cyclictest1998780-21ssh00:18:3010
173211299200,19cyclictest472371-21CPU8
1732110992020,0cyclictest0-21swapper/1520:27:007
1732110992020,0cyclictest0-21swapper/1520:26:597
173209599200,17cyclictest0-21swapper/1100:00:163
173208699200,20cyclictest0-21swapper/923:35:1419
173208699200,20cyclictest0-21swapper/919:10:0919
173208699200,0cyclictest0-21swapper/921:57:4319
173208199200,20cyclictest0-21swapper/820:40:1618
173208199200,18cyclictest0-21swapper/800:18:4718
173208199200,0cyclictest1748643-21strings19:25:1618
173208199200,0cyclictest0-21swapper/822:10:1818
173207599200,1cyclictest2281259-21CPU16
173206599200,19cyclictest17357462sleep319:10:4213
1732061992020,0cyclictest0-21swapper/220:27:0012
1732061992020,0cyclictest0-21swapper/220:26:5912
1732061992018,1cyclictest472371-21CPU12
173205899200,20cyclictest0-21swapper/119:10:451
173205599200,19cyclictest0-21swapper/021:30:170
1732123991919,0cyclictest0-21swapper/1923:41:4611
1732123991919,0cyclictest0-21swapper/1922:30:1611
1732123991919,0cyclictest0-21swapper/1920:59:4211
1732123991919,0cyclictest0-21swapper/1919:48:4011
1732123991919,0cyclictest0-21swapper/1900:37:5311
1732123991917,1cyclictest472370-21CPU11
173212399190,1cyclictest472371-21CPU11
1732120991919,0cyclictest1911655-21strings22:35:1610
173212099190,19cyclictest0-21swapper/1820:40:1510
173211599190,19cyclictest0-21swapper/1721:36:449
173211599190,19cyclictest0-21swapper/1719:10:099
1732112991918,1cyclictest0-21swapper/1621:05:168
173211099190,0cyclictest0-21swapper/1519:10:407
173210299190,19cyclictest0-21swapper/1319:11:455
173210099190,18cyclictest0-21swapper/1221:35:154
1732086991919,0cyclictest0-21swapper/919:55:1619
173208699190,19cyclictest0-21swapper/921:30:1819
1732081991919,0cyclictest0-21swapper/821:00:1618
173208199190,18cyclictest0-21swapper/800:09:4718
173208199190,0cyclictest0-21swapper/822:44:4518
1732079991917,1cyclictest472371-21CPU17
173207999190,19cyclictest0-21swapper/719:10:3717
173207599190,19cyclictest0-21swapper/600:22:1916
173207199190,19cyclictest0-21swapper/519:10:3815
173207199190,19cyclictest0-21swapper/500:22:2015
173206999190,19cyclictest0-21swapper/419:10:5714
173206599190,19cyclictest0-21swapper/323:50:1713
173206599190,19cyclictest0-21swapper/323:50:1713
1732058991916,2cyclictest0-21swapper/122:10:181
173205899190,0cyclictest0-21swapper/100:14:431
1732055991917,2cyclictest0-21swapper/023:35:140
173205599190,19cyclictest0-21swapper/023:24:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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