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2026-04-01 - 14:33

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 01, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10254132253245,5sleep90-21swapper/919:09:5319
10239492236228,5sleep170-21swapper/1719:05:199
10253072234214,12sleep70-21swapper/719:08:3017
10254082232212,12sleep40-21swapper/419:09:4714
10251872232215,10sleep140-21swapper/1419:07:366
10254292231210,13sleep130-21swapper/1319:09:565
10252452231211,12sleep150-21swapper/1519:07:577
10251822231212,12sleep110-21swapper/1119:07:333
10219662231215,9sleep10-21swapper/119:05:041
10251992230210,13sleep00-21swapper/019:07:430
10251252230208,14sleep190-21swapper/1919:07:0211
10250612229210,12sleep30-21swapper/319:06:2513
10253042228208,13sleep50-21swapper/519:08:2815
10253582226204,13sleep80-21swapper/819:09:1218
10250072225206,12sleep100-21swapper/1019:05:532
10219722225206,12sleep60-21swapper/619:05:0816
10249812223203,13sleep120-21swapper/1219:05:344
10254012222201,13sleep180-21swapper/1819:09:4210
10250602220201,12sleep20-21swapper/219:06:2412
10253162218198,12sleep160-21swapper/1619:08:398
1025810993432,2cyclictest0-21swapper/720:49:2217
1025850993333,0cyclictest0-21swapper/1920:55:0011
102584599330,0cyclictest0-21swapper/1820:10:5810
1025825993232,0cyclictest0-21swapper/1220:10:574
1025801993231,0cyclictest0-21swapper/520:55:5915
1025832993029,0cyclictest0-21swapper/1420:55:596
102580599307,22cyclictest0-21swapper/622:02:0416
1025781993030,0cyclictest0-21swapper/020:49:220
1025790992927,1cyclictest0-21swapper/320:55:5913
1025785992929,0cyclictest0-21swapper/120:57:001
1025785992929,0cyclictest0-21swapper/120:55:001
102584299280,28cyclictest0-21swapper/1720:10:559
102582599280,28cyclictest0-21swapper/1220:57:024
1025805992827,1cyclictest0-21swapper/620:56:5916
102585099270,27cyclictest0-21swapper/1920:11:0011
1025835992726,1cyclictest0-21swapper/1520:10:597
1025805992727,0cyclictest0-21swapper/620:10:5916
102578999270,0cyclictest0-21swapper/220:50:5912
1025845992625,1cyclictest0-21swapper/1820:57:0010
1025835992626,0cyclictest0-21swapper/1520:56:597
102582299260,15cyclictest0-21swapper/1120:11:013
1025815992626,0cyclictest0-21swapper/920:11:0119
1025812992626,0cyclictest0-21swapper/820:57:0218
1025812992626,0cyclictest0-21swapper/820:05:4918
1025794992625,1cyclictest0-21swapper/420:10:5414
1025830992525,0cyclictest0-21swapper/1320:57:025
1025830992525,0cyclictest0-21swapper/1320:11:015
1025810992525,0cyclictest0-21swapper/720:11:0217
1025850992423,1cyclictest0-21swapper/1920:57:0611
1025842992412,11cyclictest0-21swapper/1722:34:589
1025830992424,0cyclictest0-21swapper/1320:51:595
1025822992423,0cyclictest0-21swapper/1120:57:063
1025812992424,0cyclictest0-21swapper/820:48:1518
102580599240,23cyclictest0-21swapper/620:54:5916
1025789992424,0cyclictest0-21swapper/220:57:0212
102585099230,21cyclictest472371-21CPU11
102584099231,20cyclictest472370-21CPU8
1025835992321,1cyclictest0-21swapper/1520:54:597
102582099231,2cyclictest0-21swapper/1020:52:592
102580599230,22cyclictest68950irq/148-i91520:49:2216
1025789992323,0cyclictest0-21swapper/220:11:0112
1025781992323,0cyclictest0-21swapper/020:11:020
102584599221,20cyclictest472370-21CPU10
102584099220,21cyclictest0-21swapper/1620:52:598
1025820992222,0cyclictest0-21swapper/1020:11:002
1025820992220,2cyclictest1141rcuc/1019:10:522
1025820992220,2cyclictest1141rcuc/1019:10:522
1025815992220,1cyclictest472371-21CPU19
1025815992220,1cyclictest472370-21CPU19
102581599220,21cyclictest0-21swapper/920:31:5819
1025801992221,1cyclictest0-21swapper/520:10:5415
102580199220,21cyclictest472368-21vhost-47231219:13:2615
102580199220,21cyclictest472368-21vhost-47231219:13:2615
1025794992222,0cyclictest0-21swapper/420:57:1114
1025794992222,0cyclictest0-21swapper/420:52:5914
102585099210,20cyclictest0-21swapper/1920:17:5711
102585099210,20cyclictest0-21swapper/1919:10:3811
102585099210,20cyclictest0-21swapper/1919:10:3811
1025845992118,2cyclictest472371-21CPU10
102584599211,19cyclictest472370-21CPU10
102584599210,21cyclictest0-21swapper/1800:01:4910
102584599210,20cyclictest0-21swapper/1819:10:0310
102584599210,20cyclictest0-21swapper/1819:10:0310
102584299210,20cyclictest0-21swapper/1719:12:239
102584299210,20cyclictest0-21swapper/1719:12:239
102584299210,0cyclictest0-21swapper/1720:57:089
102584299210,0cyclictest0-21swapper/1720:49:599
1025840992120,1cyclictest0-21swapper/1620:10:538
102584099210,0cyclictest0-21swapper/1620:57:058
1025832992121,0cyclictest0-21swapper/1420:54:596
1025832992121,0cyclictest0-21swapper/1420:10:546
1025820992121,0cyclictest0-21swapper/1019:36:562
1025815992121,0cyclictest0-21swapper/920:57:1119
1025815992119,1cyclictest472370-21CPU19
102581599210,21cyclictest0-21swapper/919:11:3119
102581599210,21cyclictest0-21swapper/919:11:3119
1025812992121,0cyclictest0-21swapper/820:11:0118
102581299210,21cyclictest0-21swapper/819:11:5218
102581299210,21cyclictest0-21swapper/819:11:5218
1025810992119,1cyclictest472371-21CPU17
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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