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2025-12-20 - 21:52

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 Dec 20, 2025 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14802242236217,12sleep150-21swapper/1519:05:497
14802802234227,4sleep120-21swapper/1219:06:254
14805962233211,14sleep90-21swapper/919:09:4319
14802762232224,5sleep80-21swapper/819:06:2218
14806262231212,12sleep40-21swapper/419:09:5814
14772712230194,29sleep130-21swapper/1319:05:075
14802602229215,9sleep160-21swapper/1619:06:108
14772752229207,14sleep170-21swapper/1719:05:119
14806182228207,13sleep190-21swapper/1919:09:5311
14801942228214,9sleep140-21swapper/1419:05:286
14804682227208,12sleep50-21swapper/519:08:1915
14803612227219,5sleep180-21swapper/1819:07:1110
14805852226207,12sleep10-21swapper/119:09:351
14805902223203,12sleep60-21swapper/619:09:4116
14803132220201,12sleep100-21swapper/1019:06:432
14802112218197,13sleep70-21swapper/719:05:4117
14804012216197,12sleep30-21swapper/319:07:3613
14772662213194,12sleep110-21swapper/1119:05:043
14802952211191,12sleep20-21swapper/219:06:3512
14804632210192,11sleep00-21swapper/019:08:130
148104199517,26cyclictest0-21swapper/021:37:380
148110299450,44cyclictest0-21swapper/1919:10:5211
148110299430,42cyclictest0-21swapper/1900:25:2011
148110099430,1cyclictest0-21swapper/1800:25:2010
1481102994233,9cyclictest0-21swapper/1922:02:5311
1481102994231,11cyclictest0-21swapper/1900:36:4511
148106699420,41cyclictest0-21swapper/821:10:1818
17449052410,0sleep190-21swapper/1900:15:1711
148110299410,40cyclictest46403-21WebExtensions21:43:3511
148106699410,35cyclictest3951606-21thunderbird00:11:4818
1481061994135,4cyclictest46111-21IPDL10:52:2016
1481102994032,8cyclictest0-21swapper/1921:10:1811
148110299400,36cyclictest326418-21CPU11
1481102993936,2cyclictest326418-21CPU11
1481102993935,3cyclictest326418-21CPU11
148110299390,39cyclictest0-21swapper/1900:20:5611
1481100993932,6cyclictest0-21swapper/1821:17:0610
148110099390,39cyclictest0-21swapper/1821:10:1810
148108499390,0cyclictest0-21swapper/1322:41:135
1481080993938,1cyclictest0-21swapper/1200:11:484
148106699390,0cyclictest0-21swapper/819:10:3918
1481061993937,1cyclictest0-21swapper/622:46:2516
1481100993835,2cyclictest326418-21CPU10
1481084993838,0cyclictest0-21swapper/1319:37:135
148106699380,38cyclictest0-21swapper/800:25:5018
1481061993837,1cyclictest0-21swapper/623:36:3916
1481102993735,1cyclictest326420-21CPU11
1481102993732,4cyclictest295107-21Isolated10:52:2011
1481102993732,4cyclictest1672484-21ntpq22:50:1611
148110299370,36cyclictest3951606-21thunderbird22:39:0811
148110299370,34cyclictest1621170-21ntp_states21:50:1811
1481100993733,4cyclictest0-21swapper/1821:05:1910
148108699371,34cyclictest326420-21CPU6
1481084993732,5cyclictest0-21swapper/1321:05:205
148108499370,33cyclictest0-21swapper/1321:39:105
148108099371,34cyclictest326418-21CPU4
148108099370,4cyclictest1626691-21StreamT~4
148107199371,35cyclictest326418-21CPU19
148107199371,1cyclictest326418-21CPU19
148107199371,1cyclictest326418-21CPU19
148107199370,36cyclictest1599827-21ntpq21:25:2019
148107199370,2cyclictest1678759-21cat23:00:0019
148107199370,2cyclictest1524083-21SSL10:52:2019
1481066993734,3cyclictest0-21swapper/822:13:2218
1481066993732,5cyclictest0-21swapper/821:20:1718
1481066993732,4cyclictest3951606-21thunderbird20:35:3018
1481066993731,5cyclictest0-21swapper/821:46:0918
1481066993730,6cyclictest3951606-21thunderbird21:55:1618
148106699371,2cyclictest326418-21CPU18
148106699371,2cyclictest326418-21CPU18
148106699370,36cyclictest0-21swapper/819:40:1818
148106699370,2cyclictest3951606-21thunderbird21:17:1418
148104199372,33cyclictest1571036-21kworker/0:1+pm20:55:120
1481102993635,1cyclictest0-21swapper/1920:25:0711
1481102993635,1cyclictest0-21swapper/1920:25:0611
1481102993633,3cyclictest0-21swapper/1920:07:0411
1481102993629,6cyclictest0-21swapper/1921:05:1811
148110299360,35cyclictest0-21swapper/1921:36:1611
1481100993635,1cyclictest0-21swapper/1820:50:4810
1481100993634,1cyclictest0-21swapper/1820:59:3810
1481100993632,4cyclictest0-21swapper/1822:50:1610
148110099360,35cyclictest1639337-21StreamT~s10
148110099360,35cyclictest0-21swapper/1800:34:5510
148109599360,35cyclictest3951606-21thunderbird21:09:139
1481093993631,5cyclictest0-21swapper/1621:21:158
148109399361,34cyclictest326418-21CPU8
148109399360,35cyclictest1588122-21StreamT~8
1481090993636,0cyclictest0-21swapper/1523:28:047
1481090993636,0cyclictest0-21swapper/1523:28:037
148108699361,34cyclictest5416-21qemu-system-x8620:59:386
148108699360,35cyclictest1720271-21StreamT~6
1481084993631,4cyclictest0-21swapper/1300:15:115
1481084993628,8cyclictest0-21swapper/1320:23:015
148108499360,35cyclictest3951606-21thunderbird21:04:065
148108499360,0cyclictest0-21swapper/1321:56:245
1481080993630,5cyclictest5469-21CPU4
148108099361,34cyclictest0-21swapper/1221:51:524
148108099360,3cyclictest1554284-21StreamT~s4
148108099360,35cyclictest46305-21Isolated10:52:204
148108099360,35cyclictest1721513-21StreamT~4
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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