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2026-04-15 - 22:39

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 Wed Apr 15, 2026 00:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12702092253246,4sleep100-21swapper/1019:07:542
12701952250243,4sleep180-21swapper/1819:07:4210
12700462250231,12sleep110-21swapper/1119:05:553
12670052245208,12sleep30-21swapper/319:05:0713
12702312240233,4sleep80-21swapper/819:08:1218
12703202239219,12sleep90-21swapper/919:09:1419
12702252237217,12sleep50-21swapper/519:08:0915
12702182237230,4sleep190-21swapper/1919:08:0311
12701692236217,12sleep170-21swapper/1719:07:219
12702052234227,4sleep60-21swapper/619:07:5016
12700812232212,12sleep120-21swapper/1219:06:164
12703782231212,12sleep10-21swapper/119:09:461
12703362230212,11sleep20-21swapper/219:09:2712
12702812230211,12sleep40-21swapper/419:08:4914
12702842227207,12sleep70-21swapper/719:08:5217
12701932227207,12sleep160-21swapper/1619:07:408
12700322225205,13sleep00-21swapper/019:05:440
12703252222203,12sleep130-21swapper/1319:09:185
12701912221202,12sleep140-21swapper/1419:07:386
12701062221203,11sleep150-21swapper/1519:06:397
127074399668,32cyclictest0-21swapper/200:02:0412
127077499320,0cyclictest0-21swapper/1020:51:592
127077499320,0cyclictest0-21swapper/1020:51:592
1270770993231,0cyclictest0-21swapper/920:55:5919
1270770993231,0cyclictest0-21swapper/920:55:5919
1270788993131,0cyclictest0-21swapper/1420:53:596
1270788993131,0cyclictest0-21swapper/1420:53:596
1270778993028,1cyclictest472371-21CPU3
1270778993028,1cyclictest472371-21CPU3
1270801992929,0cyclictest0-21swapper/1820:51:5910
1270801992929,0cyclictest0-21swapper/1820:51:5910
1270753992929,0cyclictest0-21swapper/520:52:5915
1270753992929,0cyclictest0-21swapper/520:52:5915
1270736992929,0cyclictest0-21swapper/020:52:590
1270736992929,0cyclictest0-21swapper/020:52:590
1270755992826,1cyclictest472370-21CPU16
1270736992625,0cyclictest0-21swapper/020:55:590
1270736992625,0cyclictest0-21swapper/020:55:590
1270798992412,11cyclictest0-21swapper/1700:28:599
1270798992412,11cyclictest0-21swapper/1700:28:599
1270805992321,1cyclictest472370-21CPU11
127080199230,22cyclictest0-21swapper/1823:42:5910
1270760992317,0cyclictest0-21swapper/720:05:1617
127080599220,21cyclictest472370-21CPU11
127080599220,1cyclictest472370-21CPU11
127080599220,1cyclictest472370-21CPU11
127080199220,20cyclictest472371-21CPU10
1270798992218,3cyclictest1273456-21ntp_offset19:10:179
1270794992222,0cyclictest0-21swapper/1620:52:598
1270794992222,0cyclictest0-21swapper/1620:52:598
1270770992222,0cyclictest0-21swapper/919:10:0319
1270766992222,0cyclictest0-21swapper/820:22:5918
127076099221,20cyclictest472371-21CPU17
1270740992222,0cyclictest0-21swapper/119:11:501
1270805992119,1cyclictest472371-21CPU11
1270805992119,1cyclictest472371-21CPU11
1270805992119,1cyclictest472371-21CPU11
1270805992119,1cyclictest472371-21CPU11
127080599210,21cyclictest0-21swapper/1920:00:1711
127080599210,21cyclictest0-21swapper/1919:10:3811
1270770992118,2cyclictest472371-21CPU19
127077099210,20cyclictest0-21swapper/919:22:5619
127076699210,21cyclictest0-21swapper/819:11:0418
1270760992117,0cyclictest0-21swapper/700:10:1717
1270746992121,0cyclictest0-21swapper/320:52:5913
1270746992121,0cyclictest0-21swapper/320:52:5913
1270746992121,0cyclictest0-21swapper/319:11:0013
1270805992020,0cyclictest0-21swapper/1920:38:5811
1270805992018,1cyclictest472371-21CPU11
127080599200,19cyclictest0-21swapper/1900:25:0511
127080599200,19cyclictest0-21swapper/1900:25:0511
127080199200,20cyclictest0-21swapper/1820:10:1610
127080199200,20cyclictest0-21swapper/1820:07:5810
127080199200,20cyclictest0-21swapper/1819:10:0210
127080199200,20cyclictest0-21swapper/1800:07:0710
1270790992018,1cyclictest0-21swapper/1519:10:177
1270770992020,0cyclictest0-21swapper/920:35:1819
1270770992020,0cyclictest0-21swapper/900:00:1719
1270770992019,1cyclictest0-21swapper/919:30:5719
127077099200,19cyclictest472371-21CPU19
1270766992020,0cyclictest0-21swapper/822:35:1618
1270766992020,0cyclictest0-21swapper/800:22:4518
1270766992020,0cyclictest0-21swapper/800:22:4518
127076099200,18cyclictest0-21swapper/719:10:0817
127075599200,19cyclictest0-21swapper/620:55:1716
127075599200,19cyclictest0-21swapper/620:55:1716
127075599200,19cyclictest0-21swapper/619:11:4716
127074399209,11cyclictest0-21swapper/219:19:5912
1270805991919,0cyclictest0-21swapper/1920:05:1611
1270801991919,0cyclictest0-21swapper/1822:35:1610
1270801991919,0cyclictest0-21swapper/1800:26:5010
1270801991919,0cyclictest0-21swapper/1800:26:5010
127080199190,19cyclictest0-21swapper/1820:35:1810
127079899190,18cyclictest0-21swapper/1720:38:589
127079899190,18cyclictest0-21swapper/1719:15:189
127079499190,19cyclictest0-21swapper/1620:31:588
127079499190,19cyclictest0-21swapper/1619:10:038
127079499190,0cyclictest0-21swapper/1600:22:458
127079499190,0cyclictest0-21swapper/1600:22:458
127079099190,18cyclictest0-21swapper/1520:38:587
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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