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2026-05-07 - 02:10

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 Thu May 07, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30275211188,18sleep10-21swapper/119:08:271
30367210796,6sleep00-21swapper/019:09:390
30365210695,6sleep30-21swapper/319:09:373
30318210594,6sleep20-21swapper/219:09:002
30424993116,14cyclictest0-21swapper/223:10:092
30422992914,2cyclictest0-21swapper/021:35:100
3042299221,19cyclictest0-21swapper/019:50:080
3042299211,2cyclictest0-21swapper/019:45:100
30425992010,8cyclictest24342-21memory21:20:163
3042599200,2cyclictest0-21swapper/322:07:573
3042599200,12cyclictest0-21swapper/323:56:003
3042499200,2cyclictest0-21swapper/221:00:122
3042399200,2cyclictest0-21swapper/122:15:111
3042299200,2cyclictest0-21swapper/021:45:110
115082200,0sleep00-21swapper/000:39:460
3042599196,3cyclictest28068-21tr22:35:173
3042599190,2cyclictest0-21swapper/322:21:003
3042599190,2cyclictest0-21swapper/300:16:103
3042599190,2cyclictest0-21swapper/300:16:093
3042499190,2cyclictest0-21swapper/219:45:102
3042299190,2cyclictest0-21swapper/020:05:130
3042599189,2cyclictest0-21swapper/323:48:163
3042599189,2cyclictest0-21swapper/322:10:313
3042599189,2cyclictest0-21swapper/321:43:143
3042599188,2cyclictest0-21swapper/323:02:223
3042599186,3cyclictest0-21swapper/321:56:433
3042599185,3cyclictest2636-21grep19:20:133
3042599182,6cyclictest0-21swapper/323:41:003
3042599180,9cyclictest274-21jbd2/sda1-822:45:153
3042599180,11cyclictest0-21swapper/323:16:323
3042599180,11cyclictest0-21swapper/323:10:163
3042599180,11cyclictest0-21swapper/323:06:593
3042599180,11cyclictest0-21swapper/321:11:313
3042599180,11cyclictest0-21swapper/300:23:293
3042599180,11cyclictest0-21swapper/300:23:293
3042299181,14cyclictest0-21swapper/022:40:140
3042299180,2cyclictest0-21swapper/019:40:110
3042599179,2cyclictest0-21swapper/320:50:003
3042599178,2cyclictest0-21swapper/300:10:403
3042599172,6cyclictest26432-21copy20:20:013
3042599170,7cyclictest0-21swapper/322:58:593
3042599170,5cyclictest0-21swapper/320:35:003
3042599170,2cyclictest0-21swapper/300:06:593
3042599170,11cyclictest0-21swapper/323:33:313
3042599170,11cyclictest0-21swapper/322:01:013
3042599170,11cyclictest0-21swapper/321:26:013
3042599170,11cyclictest0-21swapper/320:05:403
3042599170,11cyclictest0-21swapper/319:10:003
3042599170,10cyclictest0-21swapper/300:33:303
3042599167,2cyclictest1552-21ssh21:30:443
30425991612,2cyclictest0-21swapper/323:20:133
30425991611,3cyclictest0-21swapper/321:05:133
3042599160,10cyclictest0-21swapper/322:30:383
30424991611,3cyclictest14529-21ssh21:10:112
30423991612,2cyclictest3127-21nscd00:35:101
30422991612,2cyclictest26166-21kworker/u8:123:16:040
3042599155,3cyclictest0-21swapper/300:04:173
3042599151,6cyclictest0-21swapper/323:55:003
3042599151,12cyclictest0-21swapper/320:56:013
3042599150,13cyclictest0-21swapper/321:36:023
30424991510,3cyclictest31745-21munin-node2
3042499150,13cyclictest13533-21tr22:55:142
3042499150,13cyclictest0-21swapper/200:31:032
3042399158,5cyclictest16586-21ssh21:47:051
3042399150,13cyclictest0-21swapper/120:36:011
149392150,2sleep00-21swapper/022:20:380
3042599142,7cyclictest0-21swapper/323:40:003
3042599142,7cyclictest0-21swapper/319:19:593
30424991411,2cyclictest9438-21ssh21:40:052
30424991411,2cyclictest0-21swapper/219:50:152
30424991411,2cyclictest0-21swapper/200:06:542
3042499140,13cyclictest0-21swapper/222:01:042
3042499140,13cyclictest0-21swapper/221:48:042
3042399149,4cyclictest0-21swapper/123:36:331
3042399149,3cyclictest7451-21cut19:30:391
3042399149,3cyclictest17578-21sh21:13:201
30423991410,2cyclictest0-21swapper/119:11:001
3042399140,2cyclictest0-21swapper/100:11:591
3042399140,13cyclictest0-21swapper/121:18:481
3042399140,12cyclictest28658-21ntp_offset22:00:191
3042399140,12cyclictest14193-21diskmemload23:19:081
3042399140,12cyclictest0-21swapper/121:35:381
3042399140,12cyclictest0-21swapper/121:22:241
3042299142,7cyclictest0-21swapper/019:29:590
3042299140,2cyclictest0-21swapper/020:15:130
242612140,2sleep00-21swapper/021:55:240
117982140,2sleep00-21swapper/022:17:280
92632130,2sleep00-21swapper/000:00:380
47022130,2sleep00-21swapper/023:55:400
3042599138,3cyclictest10666-21tr21:00:133
3042599132,6cyclictest26432-21copy20:20:003
3042599130,3cyclictest9860-21taskset00:36:533
3042599130,2cyclictest0-21swapper/323:27:523
3042599130,2cyclictest0-21swapper/322:40:153
3042599130,2cyclictest0-21swapper/321:47:193
3042499138,2cyclictest0-21swapper/222:16:312
30424991310,2cyclictest2383-21ssh21:31:252
30424991310,2cyclictest0-21swapper/222:06:002
30424991310,2cyclictest0-21swapper/221:26:042
30424991310,2cyclictest0-21swapper/220:55:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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