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2026-03-23 - 08:31

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 Mon Mar 23, 2026 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31461292238218,12sleep160-21swapper/1619:05:548
31430842238215,15sleep120-21swapper/1219:05:104
31463712234192,12sleep170-21swapper/1719:08:569
31463842233213,12sleep20-21swapper/219:09:0112
31463432233213,12sleep140-21swapper/1419:08:336
31463372233212,13sleep90-21swapper/919:08:2719
31463032233214,12sleep60-21swapper/619:08:0516
31462572233226,4sleep70-21swapper/719:07:2517
31462742232212,12sleep30-21swapper/319:07:4113
31460982232212,13sleep190-21swapper/1919:05:3711
31464042231211,13sleep180-21swapper/1819:09:1710
31462792230211,12sleep80-21swapper/819:07:4618
31463952228208,13sleep100-21swapper/1019:09:092
31462972227207,12sleep00-21swapper/019:07:580
31430762226207,12sleep50-21swapper/519:05:0415
31463452224206,11sleep150-21swapper/1519:08:337
31462752223204,12sleep40-21swapper/419:07:4214
31463672220203,10sleep130-21swapper/1319:08:525
31461882220201,12sleep10-21swapper/119:06:391
31463082212172,12sleep110-21swapper/1119:08:093
314683699676,35cyclictest0-21swapper/922:32:0319
31628832420,0sleep160-21swapper/1619:25:158
31763022350,0sleep160-21swapper/1619:40:178
314687199270,26cyclictest199-21ksoftirqd/1921:30:5911
314687199270,26cyclictest0-21swapper/1919:41:0511
3146836992626,0cyclictest0-21swapper/919:38:5919
3146854992525,0cyclictest0-21swapper/1419:41:056
3146864992423,1cyclictest0-21swapper/1721:55:239
314681799240,24cyclictest601rcuc/422:34:5914
3146871992323,0cyclictest0-21swapper/1919:38:4311
314687199230,21cyclictest199-21ksoftirqd/1919:10:3411
314686899230,22cyclictest3232443-21needreboot20:45:1610
3146857992322,1cyclictest163-21ksoftirqd/1519:10:367
3146854992222,0cyclictest0-21swapper/1420:55:166
3146854992222,0cyclictest0-21swapper/1419:10:346
3146836992222,0cyclictest0-21swapper/919:41:0519
3146836992220,1cyclictest472370-21CPU19
3146836992220,1cyclictest472370-21CPU19
314683699220,1cyclictest472370-21CPU19
3146830992211,11cyclictest0-21swapper/719:52:5917
314682399220,21cyclictest0-21swapper/619:41:0616
314681999220,21cyclictest0-21swapper/519:38:5915
3146871992121,0cyclictest0-21swapper/1921:55:2311
3146871992120,1cyclictest0-21swapper/1923:36:2911
314687199210,20cyclictest0-21swapper/1922:21:2711
314687199210,1cyclictest199-21ksoftirqd/1920:55:1611
314686899210,21cyclictest0-21swapper/1819:41:0510
314686499210,20cyclictest472371-21CPU9
3146857992121,0cyclictest0-21swapper/1521:42:307
3146857992121,0cyclictest0-21swapper/1519:41:057
3146846992121,0cyclictest0-21swapper/1221:55:244
314683699210,21cyclictest0-21swapper/919:11:1319
314683499210,21cyclictest0-21swapper/819:41:0518
314683499210,21cyclictest0-21swapper/819:10:0818
3146830992121,0cyclictest0-21swapper/719:38:4317
3146814992118,2cyclictest472370-21CPU13
314680799210,20cyclictest0-21swapper/121:55:231
314687199209,11cyclictest0-21swapper/1922:06:5811
314687199200,20cyclictest0-21swapper/1922:50:1711
314687199200,19cyclictest2101-21nessusd23:50:1711
314687199200,19cyclictest0-21swapper/1923:07:3011
314687199200,0cyclictest0-21swapper/1900:23:1011
314687199200,0cyclictest0-21swapper/1900:23:1011
314687199200,0cyclictest0-21swapper/1900:15:1611
314687199200,0cyclictest0-21swapper/1900:15:1511
314686899200,20cyclictest0-21swapper/1819:10:0810
314686499209,11cyclictest0-21swapper/1719:44:599
3146864992020,0cyclictest0-21swapper/1719:38:599
314686499200,19cyclictest0-21swapper/1700:31:119
3146854992019,1cyclictest3524362-21gnome-shell21:55:236
3146854992019,1cyclictest0-21swapper/1419:38:436
314685499200,19cyclictest154-21ksoftirqd/1422:55:136
3146851992020,0cyclictest0-21swapper/1319:41:055
3146844992020,0cyclictest0-21swapper/1121:55:243
314684199200,0cyclictest0-21swapper/1019:10:352
3146836992020,0cyclictest0-21swapper/922:20:1719
3146836992020,0cyclictest0-21swapper/921:10:1519
3146836992020,0cyclictest0-21swapper/921:10:1519
3146836992020,0cyclictest0-21swapper/920:24:0419
3146836992020,0cyclictest0-21swapper/919:20:1819
3146836992018,1cyclictest472371-21CPU19
314683699200,20cyclictest0-21swapper/923:07:2919
314683699200,19cyclictest472370-21CPU19
3146834992017,2cyclictest7504-21CPU18
3146834992017,2cyclictest7504-21CPU18
314683099200,19cyclictest3236705-21uname20:50:1817
3146823992018,1cyclictest472370-21CPU16
3146823992017,2cyclictest7504-21CPU16
314681799200,1cyclictest3148999-21irqstats19:10:1814
3146809992020,0cyclictest0-21swapper/219:38:4412
3146871991919,0cyclictest0-21swapper/1922:55:1311
3146871991919,0cyclictest0-21swapper/1920:45:1611
3146871991919,0cyclictest0-21swapper/1919:50:2311
314687199190,18cyclictest0-21swapper/1922:25:1711
314687199190,0cyclictest0-21swapper/1921:15:1611
3146864991918,1cyclictest0-21swapper/1722:35:169
3146864991918,0cyclictest0-21swapper/1721:30:179
3146864991918,0cyclictest0-21swapper/1721:10:159
3146864991918,0cyclictest0-21swapper/1721:10:159
3146864991916,0cyclictest0-21swapper/1723:50:169
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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