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2026-04-11 - 05:03

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 11, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21204612258251,4sleep190-21swapper/1919:05:5611
21208412253239,4sleep160-21swapper/1619:09:558
21208012252244,5sleep00-21swapper/019:09:380
21206882251209,12sleep150-21swapper/1519:08:337
21204342244236,5sleep60-21swapper/619:05:4316
21205832234215,11sleep70-21swapper/719:07:2517
21206752232213,12sleep100-21swapper/1019:08:282
21206682232214,11sleep50-21swapper/519:08:2315
21205092232213,12sleep110-21swapper/1119:06:283
21204812232212,12sleep170-21swapper/1719:06:159
21204602230209,13sleep180-21swapper/1819:05:5510
21208232229210,12sleep40-21swapper/419:09:4214
21204882229210,12sleep30-21swapper/319:06:2013
21204782229208,13sleep140-21swapper/1419:06:116
21204372229208,13sleep90-21swapper/919:05:4619
21207412226208,11sleep20-21swapper/219:09:0012
21206512226207,12sleep130-21swapper/1319:08:115
21205612220202,10sleep80-21swapper/819:07:0618
21205202219200,12sleep10-21swapper/119:06:381
21205102214195,12sleep120-21swapper/1219:06:294
212123999725,27cyclictest0-21swapper/1422:32:046
218999330,0ntpd0-21swapper/421:46:5714
2121232992828,0cyclictest0-21swapper/1221:32:594
2121254992727,0cyclictest0-21swapper/1921:33:0011
2121248992727,0cyclictest0-21swapper/1721:32:599
2121200992727,0cyclictest0-21swapper/321:32:5913
2121195992727,0cyclictest0-21swapper/221:31:5912
212124499260,25cyclictest967803-21gnome-shell21:30:598
2121217992620,5cyclictest0-21swapper/919:11:0019
2121205992626,0cyclictest0-21swapper/521:31:5915
2121192992320,3cyclictest0-21swapper/119:10:591
2121190992320,3cyclictest0-21swapper/020:01:250
212125499220,21cyclictest0-21swapper/1920:37:5811
212125499220,21cyclictest0-21swapper/1920:25:1711
212125499220,21cyclictest0-21swapper/1919:10:3211
2121252992219,2cyclictest472370-21CPU10
2121217992220,1cyclictest472371-21CPU19
2121215992222,0cyclictest0-21swapper/821:32:5918
2121190992218,3cyclictest0-21swapper/019:10:590
212125499210,20cyclictest0-21swapper/1919:20:1511
212119299219,11cyclictest0-21swapper/120:23:591
212125499200,20cyclictest0-21swapper/1920:55:1611
212125499200,20cyclictest0-21swapper/1920:15:1611
212125499200,20cyclictest0-21swapper/1919:45:1711
212125499200,0cyclictest0-21swapper/1921:40:1611
212125499200,0cyclictest0-21swapper/1900:27:1511
2121252992020,0cyclictest0-21swapper/1821:40:1610
212125299200,19cyclictest472370-21CPU10
212125299200,19cyclictest0-21swapper/1822:55:1510
2121244992018,1cyclictest0-21swapper/1620:37:578
2121217992020,0cyclictest0-21swapper/923:10:0119
2121217992019,1cyclictest0-21swapper/921:31:0019
2121217992018,1cyclictest472371-21CPU19
2121217992018,1cyclictest472371-21CPU19
2121217992018,1cyclictest472370-21CPU19
2121217992018,0cyclictest0-21swapper/900:18:0419
212121799200,0cyclictest0-21swapper/923:00:1619
2121215992020,0cyclictest0-21swapper/800:27:1518
2121215992017,2cyclictest472370-21CPU18
212121599200,20cyclictest0-21swapper/823:15:1518
212121599200,20cyclictest0-21swapper/819:10:0918
212121599200,19cyclictest0-21swapper/822:55:0118
212120799200,19cyclictest2210592-21strings20:50:1516
212120799200,19cyclictest0-21swapper/621:40:1616
212119299206,12cyclictest472371-21CPU1
2121254991919,0cyclictest2278840-21strings22:10:1511
2121254991919,0cyclictest2278840-21strings22:10:1511
2121254991918,0cyclictest0-21swapper/1923:10:1611
2121254991917,1cyclictest472371-21CPU11
2121252991919,0cyclictest0-21swapper/1822:36:0010
2121252991919,0cyclictest0-21swapper/1822:19:0010
2121252991919,0cyclictest0-21swapper/1821:25:1610
2121252991919,0cyclictest0-21swapper/1800:23:1410
212125299190,19cyclictest2197727-21strings20:35:1510
212125299190,19cyclictest0-21swapper/1819:55:1510
212125299190,18cyclictest2193476-21strings20:30:1610
212124899190,18cyclictest0-21swapper/1723:10:179
212124899190,18cyclictest0-21swapper/1719:10:229
2121244991918,0cyclictest0-21swapper/1619:10:218
212124499190,18cyclictest2334276-21strings23:15:158
212124499190,18cyclictest0-21swapper/1620:10:188
212124499190,18cyclictest0-21swapper/1600:19:038
2121242991918,0cyclictest0-21swapper/1521:40:167
2121242991918,0cyclictest0-21swapper/1520:50:157
212124299190,19cyclictest0-21swapper/1519:10:557
212124299190,18cyclictest0-21swapper/1522:40:157
212123999190,19cyclictest2334277-21grep23:15:166
212123599190,1cyclictest0-21swapper/1319:11:345
2121217991919,0cyclictest0-21swapper/923:25:1619
2121217991919,0cyclictest0-21swapper/920:05:1619
212121799190,0cyclictest0-21swapper/900:35:1719
2121215991919,0cyclictest0-21swapper/821:01:5918
212121599190,19cyclictest0-21swapper/822:40:1518
212121199190,19cyclictest0-21swapper/719:10:0917
212120799190,19cyclictest0-21swapper/619:55:1616
212120799190,19cyclictest0-21swapper/619:10:5616
212120799190,19cyclictest0-21swapper/600:31:0816
212120799190,19cyclictest0-21swapper/600:23:1416
212120799190,18cyclictest472371-21CPU16
212120799190,0cyclictest0-21swapper/623:15:1616
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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