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2026-04-09 - 03:41

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 Thu Apr 09, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2331662257249,5sleep20-21swapper/219:06:1912
2332912253234,12sleep110-21swapper/1119:07:483
2333102252231,13sleep80-21swapper/819:08:0618
2332642250211,12sleep140-21swapper/1419:07:326
2332662237229,5sleep160-21swapper/1619:07:348
2332042233213,12sleep90-21swapper/919:06:4719
2334162232213,12sleep50-21swapper/519:09:2315
2331562232212,12sleep130-21swapper/1319:06:105
2333122231212,12sleep100-21swapper/1019:08:082
2331452231212,12sleep40-21swapper/419:06:0114
2331052230210,12sleep180-21swapper/1819:05:3510
2332652229209,12sleep150-21swapper/1519:07:337
2330972229210,12sleep120-21swapper/1219:05:284
2333242227208,12sleep10-21swapper/119:08:191
2332552227207,12sleep70-21swapper/719:07:2517
2331292227205,14sleep190-21swapper/1919:05:5611
2333432219199,12sleep170-21swapper/1719:08:359
2333662216196,12sleep60-21swapper/619:08:4416
2332512216196,12sleep30-21swapper/319:07:2013
2331952210191,12sleep00-21swapper/019:06:380
23384499487,35cyclictest0-21swapper/821:47:0318
233859993232,0cyclictest0-21swapper/1200:34:594
233859993232,0cyclictest0-21swapper/1200:34:594
233851992727,0cyclictest0-21swapper/1000:32:582
233851992727,0cyclictest0-21swapper/1000:32:582
23387899260,15cyclictest0-21swapper/1819:39:5910
233819992626,0cyclictest0-21swapper/100:32:581
233819992626,0cyclictest0-21swapper/100:32:581
233849992525,0cyclictest0-21swapper/900:32:5919
233849992525,0cyclictest0-21swapper/900:32:5919
233869992411,12cyclictest0-21swapper/1521:02:587
23384999240,22cyclictest472371-21CPU19
233824992424,0cyclictest0-21swapper/300:32:5913
233824992424,0cyclictest0-21swapper/300:32:5813
23386599230,22cyclictest0-21swapper/1400:35:136
23382299230,0cyclictest0-21swapper/222:25:1812
233878992222,0cyclictest0-21swapper/1800:34:5910
233878992222,0cyclictest0-21swapper/1800:34:5910
23384999220,21cyclictest472371-21CPU19
23383199220,0cyclictest0-21swapper/500:25:5915
23383199220,0cyclictest0-21swapper/500:25:5815
233829992217,3cyclictest7504-21CPU14
23388199210,21cyclictest0-21swapper/1900:35:1711
23388199210,20cyclictest0-21swapper/1922:25:1811
23388199210,0cyclictest0-21swapper/1919:10:3511
233878992120,1cyclictest446971-21strings23:15:1510
23387899210,21cyclictest512409-21updatedb00:35:1910
23387899210,21cyclictest0-21swapper/1819:10:4510
23387899210,20cyclictest0-21swapper/1821:36:1510
233875992121,0cyclictest0-21swapper/1700:34:599
233875992121,0cyclictest0-21swapper/1700:34:599
23386999210,19cyclictest0-21swapper/1519:10:367
23386999210,0cyclictest0-21swapper/1500:35:127
23385999210,0cyclictest0-21swapper/1200:25:594
23385999210,0cyclictest0-21swapper/1200:25:584
233844992120,1cyclictest512409-21updatedb00:35:2318
233829992111,0cyclictest0-21swapper/400:35:2714
23382499210,20cyclictest236564-21ntpq19:10:1713
233881992018,1cyclictest472371-21CPU11
23388199200,20cyclictest0-21swapper/1919:50:1511
23388199200,1cyclictest254986-21smartctl19:30:1711
23388199200,0cyclictest0-21swapper/1921:50:1611
233878992020,0cyclictest0-21swapper/1822:40:1610
233878992020,0cyclictest0-21swapper/1822:25:1810
233871992018,1cyclictest472370-21CPU8
23387199200,19cyclictest472371-21CPU8
23386999200,19cyclictest0-21swapper/1519:33:127
233865992020,0cyclictest0-21swapper/1421:40:386
23386199200,19cyclictest472370-21CPU5
233849992020,0cyclictest0-21swapper/920:30:1619
233849992020,0cyclictest0-21swapper/919:10:0319
233849992018,1cyclictest472371-21CPU19
23384999200,20cyclictest0-21swapper/919:30:1419
23384999200,1cyclictest0-21swapper/921:18:0119
23384999200,1cyclictest0-21swapper/921:18:0119
23384999200,19cyclictest513953-21cat00:35:1219
233844992020,0cyclictest306012-21strings20:30:1618
233844992020,0cyclictest0-21swapper/821:25:1418
233844992020,0cyclictest0-21swapper/819:35:1618
233844992020,0cyclictest0-21swapper/819:10:3018
23384499200,20cyclictest0-21swapper/820:50:1618
23384499200,20cyclictest0-21swapper/820:40:1618
23383799200,19cyclictest472370-21CPU17
23383799200,19cyclictest0-21swapper/719:10:1317
233834992018,1cyclictest472371-21CPU16
23383499200,19cyclictest0-21swapper/623:25:1616
23383499200,19cyclictest0-21swapper/619:55:1616
23383199200,19cyclictest0-21swapper/523:37:1815
233829992018,1cyclictest472370-21CPU14
23382999200,19cyclictest472370-21CPU14
23382999200,19cyclictest0-21swapper/419:37:1214
23382499200,19cyclictest472371-21CPU13
23382299200,18cyclictest0-21swapper/219:10:3612
23382299200,18cyclictest0-21swapper/200:35:1012
23381599200,19cyclictest7504-21CPU0
233881991919,0cyclictest0-21swapper/1923:40:1511
233881991919,0cyclictest0-21swapper/1923:10:1511
233881991919,0cyclictest0-21swapper/1923:00:1711
233881991919,0cyclictest0-21swapper/1922:34:1611
233881991919,0cyclictest0-21swapper/1920:30:1511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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