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2026-04-10 - 08:28

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 Fri Apr 10, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32915422245225,12sleep70-21swapper/719:09:4617
32915422245225,12sleep70-21swapper/719:09:4617
32914662236228,5sleep170-21swapper/1719:08:569
32914662236228,5sleep170-21swapper/1719:08:569
32912632235215,12sleep80-21swapper/819:06:2618
32912632235215,12sleep80-21swapper/819:06:2618
32914682234213,13sleep190-21swapper/1919:08:5811
32914682234213,13sleep190-21swapper/1919:08:5711
32914372234215,12sleep150-21swapper/1519:08:347
32914372234215,12sleep150-21swapper/1519:08:347
32914552233214,12sleep110-21swapper/1119:08:493
32914552233214,12sleep110-21swapper/1119:08:493
32912162232212,12sleep30-21swapper/319:06:0013
32912162232212,12sleep30-21swapper/319:06:0013
32915222231211,12sleep90-21swapper/919:09:2819
32915222231211,12sleep90-21swapper/919:09:2819
32914462231212,12sleep20-21swapper/219:08:4012
32914462231212,12sleep20-21swapper/219:08:4012
32915362229210,12sleep10-21swapper/119:09:401
32915362229210,12sleep10-21swapper/119:09:391
32911912227207,12sleep60-21swapper/619:05:4416
32911912227207,12sleep60-21swapper/619:05:4316
32911562227214,8sleep100-21swapper/1019:05:282
32911562227214,8sleep100-21swapper/1019:05:272
32911712226207,12sleep00-21swapper/019:05:380
32911712226207,12sleep00-21swapper/019:05:380
32911642225206,12sleep160-21swapper/1619:05:348
32911642225206,12sleep160-21swapper/1619:05:348
32912572224205,12sleep40-21swapper/419:06:2114
32912572224205,12sleep40-21swapper/419:06:2114
32914672222202,12sleep180-21swapper/1819:08:5710
32914672222202,12sleep180-21swapper/1819:08:5710
32912012219200,12sleep130-21swapper/1319:05:505
32912012219200,12sleep130-21swapper/1319:05:505
32911992216196,13sleep120-21swapper/1219:05:494
32911992216196,13sleep120-21swapper/1219:05:494
32913492212195,10sleep50-21swapper/519:07:2215
32913492212195,10sleep50-21swapper/519:07:2215
32912032212192,12sleep140-21swapper/1419:05:526
32912032212192,12sleep140-21swapper/1419:05:516
329196999756,28cyclictest0-21swapper/1820:32:0510
329196699675,28cyclictest0-21swapper/1723:47:049
329195999340,33cyclictest0-21swapper/1523:56:587
3291913993131,0cyclictest0-21swapper/223:49:5812
3291935992928,1cyclictest0-21swapper/923:56:5919
3291918992727,0cyclictest0-21swapper/323:56:5913
329194599241,22cyclictest967803-21gnome-shell23:56:593
3291974992321,1cyclictest472370-21CPU11
329195699230,22cyclictest0-21swapper/1423:53:596
329193399230,21cyclictest0-21swapper/819:10:4518
3291974992220,1cyclictest472371-21CPU11
3291974992220,1cyclictest472371-21CPU11
3291974992220,1cyclictest472371-21CPU11
3291959992222,0cyclictest0-21swapper/1519:10:487
329194599220,21cyclictest967803-21gnome-shell23:52:583
3291974992121,0cyclictest0-21swapper/1923:54:5811
329197499210,20cyclictest0-21swapper/1922:05:1711
329197499210,20cyclictest0-21swapper/1922:05:1611
329197499210,20cyclictest0-21swapper/1919:52:0611
329197499210,1cyclictest472371-21CPU11
3291956992121,0cyclictest0-21swapper/1423:55:586
3291935992120,1cyclictest0-21swapper/922:56:1019
3291935992119,1cyclictest472370-21CPU19
329193599210,21cyclictest0-21swapper/920:50:0619
329193599210,21cyclictest0-21swapper/919:10:4619
329193399210,0cyclictest0-21swapper/822:41:1018
3291974992020,0cyclictest0-21swapper/1919:10:0211
3291974992018,1cyclictest472370-21CPU11
329197499200,20cyclictest0-21swapper/1921:10:1811
329197499200,1cyclictest472371-21CPU11
329197499200,1cyclictest472370-21CPU11
3291969992020,0cyclictest0-21swapper/1819:10:3210
3291959992020,0cyclictest0-21swapper/1521:30:197
3291959992019,1cyclictest0-21swapper/1500:38:137
329195999200,19cyclictest3458173-21cut22:20:187
329195499200,19cyclictest0-21swapper/1321:36:225
3291949992018,1cyclictest472371-21CPU4
3291949992016,4cyclictest0-21swapper/1219:10:534
329194599200,19cyclictest0-21swapper/1100:06:123
3291935992018,1cyclictest472370-21CPU19
329193599200,20cyclictest0-21swapper/922:35:1819
329193599200,0cyclictest0-21swapper/900:23:0919
3291933992019,1cyclictest0-21swapper/820:30:0618
3291933992018,1cyclictest472370-21CPU18
329193399200,20cyclictest0-21swapper/821:15:1918
329193399200,19cyclictest3394149-21strings21:05:1718
3291930992018,1cyclictest0-21swapper/723:50:5817
329192099200,1cyclictest472371-21CPU14
3291918992019,1cyclictest472368-21vhost-47231222:18:4513
329191899200,19cyclictest0-21swapper/319:10:3713
3291974991919,0cyclictest0-21swapper/1922:25:0911
3291974991919,0cyclictest0-21swapper/1921:40:1711
3291974991919,0cyclictest0-21swapper/1919:38:0511
3291974991919,0cyclictest0-21swapper/1900:19:0611
3291974991917,1cyclictest472371-21CPU11
3291974991917,1cyclictest472370-21CPU11
3291969991919,0cyclictest0-21swapper/1821:55:1810
3291969991919,0cyclictest0-21swapper/1821:55:1810
3291969991919,0cyclictest0-21swapper/1821:50:1610
3291969991919,0cyclictest0-21swapper/1819:50:1510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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