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2026-04-12 - 14:44

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 Sun Apr 12, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9641872267237,23sleep70-21swapper/719:08:2717
9641182265258,4sleep170-21swapper/1719:07:369
9641122245237,5sleep110-21swapper/1119:07:303
9640282239220,12sleep160-21swapper/1619:06:358
9640162238217,13sleep50-21swapper/519:06:2315
9642122234213,13sleep80-21swapper/819:08:4818
9641892233212,13sleep90-21swapper/919:08:2919
9639792233213,13sleep180-21swapper/1819:05:5710
9641832232214,11sleep30-21swapper/319:08:2313
9640052232211,13sleep150-21swapper/1519:06:147
9642092231212,12sleep60-21swapper/619:08:4516
9641482230210,12sleep00-21swapper/019:08:000
9640392230211,12sleep10-21swapper/119:06:401
9640022230209,13sleep120-21swapper/1219:06:114
9642722228208,12sleep140-21swapper/1419:09:336
9642402228207,13sleep100-21swapper/1019:09:102
9642812224205,12sleep20-21swapper/219:09:4212
9640152224205,12sleep40-21swapper/419:06:2314
9639742224205,12sleep130-21swapper/1319:05:525
9639802222201,13sleep190-21swapper/1919:05:5811
10852592880,0sleep100-21swapper/1021:29:582
96466699856,36cyclictest0-21swapper/421:17:0414
964669996711,32cyclictest0-21swapper/500:32:0415
964715993030,0cyclictest0-21swapper/1800:34:5910
964684993030,0cyclictest0-21swapper/821:52:5918
964654993030,0cyclictest0-21swapper/000:34:590
964656992929,0cyclictest0-21swapper/121:52:591
964694992727,0cyclictest0-21swapper/1100:34:583
964659992517,8cyclictest0-21swapper/219:11:0212
96465999250,0cyclictest0-21swapper/222:16:5312
96472099240,0cyclictest0-21swapper/1922:28:5411
964704992423,1cyclictest0-21swapper/1421:52:596
964664992422,1cyclictest0-21swapper/300:34:5913
96472099231,21cyclictest472370-21CPU11
96472099230,0cyclictest0-21swapper/1919:11:0211
96470499231,20cyclictest472370-21CPU6
964677992323,0cyclictest0-21swapper/700:05:5617
964677992312,11cyclictest0-21swapper/700:11:5917
96466999230,22cyclictest0-21swapper/500:03:0015
964720992220,1cyclictest472370-21CPU11
96472099220,21cyclictest472371-21CPU11
964713992219,2cyclictest472371-21CPU9
964686992220,1cyclictest472370-21CPU19
964686992220,1cyclictest472370-21CPU19
96468699220,21cyclictest472371-21CPU19
96468699220,21cyclictest0-21swapper/923:41:5619
96468699220,21cyclictest0-21swapper/922:56:5519
96468699220,21cyclictest0-21swapper/900:35:1919
964666992211,11cyclictest0-21swapper/420:51:5914
964656992222,0cyclictest0-21swapper/100:34:591
964720992119,1cyclictest472371-21CPU11
96472099211,1cyclictest472371-21CPU11
96472099210,20cyclictest0-21swapper/1920:18:5111
96470099210,0cyclictest0-21swapper/1321:52:585
964696992118,2cyclictest472371-21CPU4
964686992119,1cyclictest472370-21CPU19
96468699210,21cyclictest0-21swapper/919:11:0419
96468699210,20cyclictest0-21swapper/900:24:5719
96468499210,21cyclictest967364-21ntpq19:10:1818
96466699210,19cyclictest62-21ksoftirqd/400:35:4114
964720992020,0cyclictest0-21swapper/1923:22:5511
964720992020,0cyclictest0-21swapper/1920:05:1711
964720992018,1cyclictest472371-21CPU11
964720992018,1cyclictest472370-21CPU11
964720992017,2cyclictest472370-21CPU11
96472099200,20cyclictest0-21swapper/1900:35:1711
96472099200,0cyclictest0-21swapper/1922:40:1711
96472099200,0cyclictest0-21swapper/1922:40:1611
96472099200,0cyclictest0-21swapper/1920:28:5011
964715992018,1cyclictest472370-21CPU10
96471599200,20cyclictest1234646-21ssh00:23:0810
96471599200,20cyclictest0-21swapper/1819:10:0210
96471599200,0cyclictest1075305-21strings21:15:1810
96471599200,0cyclictest0-21swapper/1822:40:1610
96471599200,0cyclictest0-21swapper/1822:40:1610
964710992018,1cyclictest472371-21CPU8
964706992018,1cyclictest472370-21CPU7
96469699200,19cyclictest1243340-21updatedb00:35:154
96469499200,17cyclictest0-21swapper/1119:10:353
96469099200,0cyclictest0-21swapper/1000:24:592
964686992020,0cyclictest0-21swapper/923:30:1619
96468699200,1cyclictest472370-21CPU19
96468699200,19cyclictest472371-21CPU19
964684992020,0cyclictest1169124-21strings23:05:1918
96467799209,11cyclictest0-21swapper/700:03:5917
96467799200,19cyclictest0-21swapper/720:52:5117
96467299200,19cyclictest0-21swapper/623:10:5516
96467299200,19cyclictest0-21swapper/600:15:1716
964669992018,2cyclictest0-21swapper/519:11:0115
964666992020,0cyclictest0-21swapper/421:52:5814
964666992015,5cyclictest0-21swapper/419:10:1514
96466699200,1cyclictest472371-21CPU14
96466699200,19cyclictest0-21swapper/422:45:5414
96466699200,19cyclictest0-21swapper/422:45:5314
964664992020,0cyclictest0-21swapper/321:52:5913
96466499200,1cyclictest1227088-21ssh00:15:1613
96466499200,19cyclictest0-21swapper/320:35:1713
96465999200,19cyclictest0-21swapper/200:35:1712
964656992017,2cyclictest472370-21CPU1
96465499200,19cyclictest472371-21CPU0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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