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2026-04-08 - 22:30

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 08, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13661042242198,13sleep180-21swapper/1819:07:1810
13660952234214,12sleep90-21swapper/919:07:0919
13662842233213,12sleep170-21swapper/1719:09:189
13661632233214,12sleep160-21swapper/1619:07:588
13661602233213,13sleep130-21swapper/1319:07:535
13661472233212,13sleep40-21swapper/419:07:4414
13660872232212,12sleep20-21swapper/219:07:0212
13663472231211,12sleep120-21swapper/1219:09:534
13661162228208,12sleep70-21swapper/719:07:2717
13660452227208,12sleep110-21swapper/1119:06:313
13663212226207,12sleep00-21swapper/019:09:410
13661012226205,13sleep150-21swapper/1519:07:157
13660702225206,12sleep100-21swapper/1019:06:502
13661742224204,12sleep60-21swapper/619:08:0716
13662542223199,17sleep190-21swapper/1919:09:0011
13660912221212,5sleep50-21swapper/519:07:0515
13629692220199,13sleep80-21swapper/819:05:0918
13659732219200,12sleep10-21swapper/119:05:411
13659752218199,12sleep30-21swapper/319:05:4313
13661612212193,12sleep140-21swapper/1419:07:546
136670699797,31cyclictest0-21swapper/323:02:0413
1366761993030,0cyclictest0-21swapper/1900:28:5811
1366761993030,0cyclictest0-21swapper/1900:28:5811
1366706992929,0cyclictest0-21swapper/300:28:5913
1366706992929,0cyclictest0-21swapper/300:28:5813
1366709992828,0cyclictest0-21swapper/400:28:5914
1366709992828,0cyclictest0-21swapper/400:28:5814
1366755992726,1cyclictest0-21swapper/1700:28:589
1366755992726,1cyclictest0-21swapper/1700:28:589
136670999270,16cyclictest0-21swapper/400:06:5814
136670999260,15cyclictest0-21swapper/400:20:5814
136676199240,23cyclictest7448-21qemu-system-x8619:11:0211
1366741992415,9cyclictest0-21swapper/1319:10:085
1366719992422,1cyclictest0-21swapper/700:02:5917
136676199231,21cyclictest472370-21CPU11
136672499231,20cyclictest472371-21CPU19
136676199220,21cyclictest472371-21CPU11
136676199220,1cyclictest472371-21CPU11
1366724992220,1cyclictest472370-21CPU19
1366724992220,1cyclictest472370-21CPU19
136670999221,20cyclictest1430481-21strings20:20:1714
1366709992211,0cyclictest0-21swapper/419:10:4214
136675999210,21cyclictest0-21swapper/1819:10:0910
1366751992119,1cyclictest472370-21CPU8
136675199210,20cyclictest1641170-21updatedb00:28:538
136675199210,20cyclictest1641170-21updatedb00:28:538
136674999210,20cyclictest472370-21CPU7
136674599210,0cyclictest0-21swapper/1419:11:016
136673599210,20cyclictest0-21swapper/1100:02:583
136672499210,21cyclictest0-21swapper/919:10:3519
136672399210,21cyclictest0-21swapper/819:11:0418
136672399210,20cyclictest0-21swapper/819:40:1718
136672399210,20cyclictest0-21swapper/800:28:5018
136672399210,20cyclictest0-21swapper/800:28:5018
136671999219,11cyclictest0-21swapper/723:31:5917
136671999210,20cyclictest1404771-21ntp_states19:50:1717
1366699992114,6cyclictest7505-21CPU1
136676199200,1cyclictest472370-21CPU11
136676199200,0cyclictest0-21swapper/1921:10:1711
136676199200,0cyclictest0-21swapper/1920:45:1711
136676199200,0cyclictest0-21swapper/1900:35:2511
136676199200,0cyclictest0-21swapper/1900:35:2411
1366759992020,0cyclictest0-21swapper/1821:15:1510
136675999200,20cyclictest0-21swapper/1820:07:1810
136675999200,0cyclictest0-21swapper/1823:05:1710
136675999200,0cyclictest0-21swapper/1820:46:1910
136675999200,0cyclictest0-21swapper/1800:28:5110
136675999200,0cyclictest0-21swapper/1800:28:5110
136675199200,19cyclictest0-21swapper/1619:50:178
1366745992020,0cyclictest0-21swapper/1400:28:526
1366745992020,0cyclictest0-21swapper/1400:28:526
136674599200,19cyclictest0-21swapper/1423:10:236
136674599200,19cyclictest0-21swapper/1422:53:226
1366741992018,1cyclictest472370-21CPU5
136673999200,19cyclictest1649266-21sed00:35:244
136673999200,19cyclictest1649266-21sed00:35:244
1366724992020,0cyclictest0-21swapper/920:45:1919
1366724992020,0cyclictest0-21swapper/900:28:5019
1366724992020,0cyclictest0-21swapper/900:28:5019
1366724992018,1cyclictest472371-21CPU19
136672499200,20cyclictest1623944-21ssh00:07:0319
136672499200,20cyclictest0-21swapper/920:20:1619
136672499200,20cyclictest0-21swapper/919:50:1619
136672499200,19cyclictest472371-21CPU19
1366723992020,0cyclictest1404676-21strings19:50:1618
1366723992020,0cyclictest0-21swapper/820:58:1918
136672399200,20cyclictest0-21swapper/822:47:2218
136672399200,20cyclictest0-21swapper/821:10:1718
136672399200,20cyclictest0-21swapper/819:20:1718
136672399200,1cyclictest7448-21qemu-system-x8600:30:2618
136672399200,1cyclictest7448-21qemu-system-x8600:30:2518
136671499200,1cyclictest1641170-21updatedb00:28:4716
136671499200,1cyclictest1641170-21updatedb00:28:4716
136670699200,20cyclictest0-21swapper/319:10:5413
136670699200,19cyclictest1299291-21kworker/3:3+events00:35:2413
136670699200,19cyclictest1299291-21kworker/3:3+events00:35:2413
1366703992018,1cyclictest472371-21CPU12
1366695992016,3cyclictest1554331-21uname22:45:160
136669599200,3cyclictest1434747-21needreboot20:25:180
1366761991919,0cyclictest0-21swapper/1922:02:2111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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