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2026-06-20 - 20:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, 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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Sat Jun 20, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4026211695,16sleep30-21swapper/307:07:233
41282114103,6sleep20-21swapper/207:08:412
4291211389,18sleep00-21swapper/007:09:550
349129578,11sleep10-21swapper/107:05:521
9372720,0sleep10-21swapper/111:07:061
121482710,0sleep20-21swapper/209:35:132
294162680,0sleep00-21swapper/011:03:060
240622250,1sleep3381ktimersoftd/307:56:013
434099210,19cyclictest0-21swapper/110:30:101
434099210,19cyclictest0-21swapper/108:20:111
434099200,18cyclictest0-21swapper/110:20:111
433999200,2cyclictest0-21swapper/007:15:120
4341991916,2cyclictest7566-21kworker/u8:011:28:052
4341991916,2cyclictest20552-21kworker/u8:208:30:052
433999190,17cyclictest0-21swapper/009:13:050
144352180,0sleep30-21swapper/311:56:033
4341991714,2cyclictest1970-21kworker/u8:311:18:022
4341991714,2cyclictest16132-21kworker/u8:109:58:052
4341991714,2cyclictest16047-21kworker/u8:110:17:042
434299161,3cyclictest0-21swapper/310:15:143
4342991611,3cyclictest0-21swapper/309:40:143
434199161,3cyclictest6876-21ssh11:13:582
4341991613,2cyclictest9397-21kworker/u8:112:29:052
4341991613,2cyclictest31156-21kworker/u8:312:19:052
4341991613,2cyclictest23066-21kworker/u8:009:22:052
4341991613,2cyclictest14967-21kworker/u8:010:50:052
4341991611,3cyclictest0-21swapper/210:45:512
4342991510,3cyclictest0-21swapper/308:15:143
434299150,13cyclictest30856-21aten2.4_r3power11:05:113
434299150,13cyclictest0-21swapper/311:36:483
434299150,13cyclictest0-21swapper/311:14:183
4341991512,2cyclictest31631-21kworker/u8:311:46:042
4341991512,2cyclictest23066-21kworker/u8:009:27:042
4341991512,2cyclictest16845-21kworker/u8:312:35:042
434199151,12cyclictest8530-21ntp_kernel_err10:40:162
434199151,12cyclictest27357-21ssh10:25:512
4341991511,2cyclictest0-21swapper/210:05:182
434199150,13cyclictest26150-21apt-get12:10:042
434199150,13cyclictest0-21swapper/210:56:012
433999151,12cyclictest8648-21perl11:50:160
433999150,13cyclictest11094-21kworker/u8:011:56:050
124592150,2sleep30-21swapper/311:20:123
434299149,3cyclictest5957-21sh11:47:103
434299149,3cyclictest12244-21rm12:29:483
434299141,2cyclictest9493-21ssh09:31:293
4342991411,2cyclictest10638-21ssh11:52:083
4342991411,2cyclictest0-21swapper/310:36:583
4342991411,2cyclictest0-21swapper/309:28:573
434299141,11cyclictest22458-21ssh09:10:453
4342991410,2cyclictest0-21swapper/312:20:113
434299140,2cyclictest0-21swapper/307:20:123
434299140,13cyclictest0-21swapper/312:08:573
434299140,12cyclictest20772-21diskmemload10:06:433
434299140,12cyclictest0-21swapper/311:19:223
434299140,12cyclictest0-21swapper/308:30:073
434199149,3cyclictest0-21swapper/211:59:042
434199149,3cyclictest0-21swapper/208:41:032
4341991411,2cyclictest6714-21kworker/u8:207:26:052
4341991411,2cyclictest6714-21kworker/u8:207:26:052
4341991411,2cyclictest562-21kworker/u8:010:14:052
4341991411,2cyclictest20552-21kworker/u8:207:58:022
4341991411,2cyclictest16047-21kworker/u8:110:22:052
434199141,11cyclictest0-21swapper/211:07:292
434199140,2cyclictest0-21swapper/209:46:052
434199140,2cyclictest0-21swapper/209:32:382
434199140,2cyclictest0-21swapper/208:00:172
434199140,12cyclictest18181-21cat12:00:172
434199140,12cyclictest0-21swapper/211:00:582
434199140,12cyclictest0-21swapper/209:42:042
4340991411,2cyclictest20772-21diskmemload11:58:111
434099141,11cyclictest27427-21cut11:35:191
4340991410,2cyclictest0-21swapper/111:15:151
434099140,3cyclictest7671-21expr09:30:141
434099140,2cyclictest0-21swapper/111:48:511
434099140,13cyclictest0-21swapper/112:30:121
434099140,13cyclictest0-21swapper/110:27:021
434099140,13cyclictest0-21swapper/110:18:111
434099140,13cyclictest0-21swapper/109:56:311
434099140,12cyclictest0-21swapper/111:43:131
434099140,12cyclictest0-21swapper/110:10:171
434099140,12cyclictest0-21swapper/110:06:421
4339991411,2cyclictest6775-21kworker/u8:309:41:040
4339991411,2cyclictest6333-21kworker/u8:211:48:010
4339991411,2cyclictest24977-21apt-get08:00:130
433999141,11cyclictest19799-21ssh12:37:110
433999140,2cyclictest0-21swapper/008:11:020
433999140,12cyclictest0-21swapper/010:33:270
433999140,12cyclictest0-21swapper/009:58:130
433999140,12cyclictest0-21swapper/009:21:030
433999140,12cyclictest0-21swapper/008:35:130
108692140,3sleep010879-21ssh10:43:180
434299133,6cyclictest0-21swapper/308:36:013
4342991310,2cyclictest0-21swapper/312:36:043
4342991310,2cyclictest0-21swapper/310:59:593
4342991310,2cyclictest0-21swapper/310:31:583
4342991310,2cyclictest0-21swapper/310:26:473
4342991310,2cyclictest0-21swapper/307:35:133
4342991310,2cyclictest0-21swapper/307:15:153
434299130,2cyclictest17338-21ssh12:00:113
434299130,2cyclictest0-21swapper/312:18:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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