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2026-03-17 - 22:13

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 Tue Mar 17, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13266211999,15sleep00-21swapper/007:07:550
13278211695,16sleep20-21swapper/207:08:052
13195211493,16sleep10-21swapper/107:07:001
1720721050,1sleep017205-21ssh09:30:110
13353210279,6sleep30-21swapper/307:09:023
54892740,0sleep30-21swapper/310:57:123
193762680,0sleep00-21swapper/011:11:080
272642230,0sleep30-21swapper/307:41:023
163572210,0sleep20-21swapper/211:08:562
1345699211,2cyclictest23746-21ssh10:10:111
13458991915,2cyclictest0-21swapper/307:10:133
1345899190,18cyclictest0-21swapper/308:25:023
13457991815,2cyclictest20688-21kworker/u8:110:53:042
1345699170,2cyclictest0-21swapper/109:40:111
1345899163,7cyclictest26686-21ssh11:20:003
13458991611,3cyclictest30253-21ssh12:30:073
1345799161,13cyclictest30410-21ssh11:23:192
1345699160,15cyclictest0-21swapper/108:25:001
1345899151,12cyclictest0-21swapper/312:26:273
1345899150,12cyclictest14484-21tr08:30:143
13457991512,2cyclictest0-21swapper/210:30:152
1345799151,12cyclictest17303-21sh10:03:042
13457991511,2cyclictest0-21swapper/209:55:142
1345799150,14cyclictest0-21swapper/210:11:172
13456991511,2cyclictest6431-21diskstats12:05:141
13456991510,3cyclictest0-21swapper/112:10:201
1345699150,3cyclictest29939-21pzem11:55:411
1345699150,13cyclictest13126-21which11:05:141
1345699150,13cyclictest0-21swapper/110:23:201
13455991512,2cyclictest0-21swapper/008:10:070
13455991512,2cyclictest0-21swapper/008:10:060
1345599151,12cyclictest23979-21apt-get08:55:140
281672140,2sleep30-21swapper/309:40:373
1345899149,3cyclictest16720-21processes10:35:173
1345899142,7cyclictest0-21swapper/312:10:013
1345899141,3cyclictest14659-21ssh10:33:533
13457991411,2cyclictest2676-21kworker/u8:211:10:052
13457991411,2cyclictest25812-21ssh10:45:142
13457991411,2cyclictest21877-21kworker/u8:010:08:062
13457991411,2cyclictest0-21swapper/211:30:442
13457991411,2cyclictest0-21swapper/209:00:162
13457991411,2cyclictest0-21swapper/207:50:152
1345799140,3cyclictest3346-21ssh11:29:062
1345799140,2cyclictest21552-21ssh11:47:042
1345799140,13cyclictest1861-21ssh09:46:572
1345799140,13cyclictest0-21swapper/209:30:482
13456991411,2cyclictest0-21swapper/111:45:401
13456991411,2cyclictest0-21swapper/109:22:001
13456991411,2cyclictest0-21swapper/109:19:291
13456991411,2cyclictest0-21swapper/109:14:191
13456991410,2cyclictest31282-21ntp_states12:30:191
13456991410,2cyclictest0-21swapper/112:26:251
1345699140,2cyclictest0-21swapper/111:28:301
1345699140,2cyclictest0-21swapper/109:32:201
1345699140,13cyclictest0-21swapper/110:37:001
1345699140,12cyclictest8974-21sh10:27:321
1345699140,12cyclictest7644-21ssh11:00:111
1345699140,12cyclictest207150irq/24-eth112:02:201
1345699140,12cyclictest0-21swapper/111:34:241
1345599149,3cyclictest9894-21iostat09:55:170
13455991411,2cyclictest0-21swapper/010:45:370
1345599140,2cyclictest24477-21ssh11:16:360
1345599140,12cyclictest31817-21rm12:30:570
1345599140,12cyclictest0-21swapper/012:26:360
1345599140,12cyclictest0-21swapper/010:30:140
1345599140,12cyclictest0-21swapper/010:20:460
1345599140,12cyclictest0-21swapper/007:41:040
1345599140,12cyclictest0-21swapper/007:38:070
316942130,2sleep10-21swapper/110:50:521
268672130,2sleep00-21swapper/011:52:480
227322130,2sleep30-21swapper/311:48:543
1345899132,6cyclictest0-21swapper/311:30:003
1345899132,6cyclictest0-21swapper/310:50:013
1345899132,6cyclictest0-21swapper/310:30:003
13458991310,2cyclictest0-21swapper/312:35:163
1345799131,11cyclictest0-21swapper/212:11:082
13457991310,2cyclictest0-21swapper/212:38:542
13457991310,2cyclictest0-21swapper/212:20:162
13457991310,2cyclictest0-21swapper/212:15:542
13457991310,2cyclictest0-21swapper/212:01:052
13457991310,2cyclictest0-21swapper/211:53:102
13457991310,2cyclictest0-21swapper/211:36:252
13457991310,2cyclictest0-21swapper/211:36:242
13457991310,2cyclictest0-21swapper/211:17:532
13457991310,2cyclictest0-21swapper/210:55:042
13457991310,2cyclictest0-21swapper/210:28:002
13457991310,2cyclictest0-21swapper/210:20:472
13457991310,2cyclictest0-21swapper/210:15:112
13457991310,2cyclictest0-21swapper/209:50:532
13457991310,2cyclictest0-21swapper/209:25:172
13457991310,2cyclictest0-21swapper/207:30:182
1345799130,2cyclictest1801-21ssh12:34:092
1345799130,2cyclictest0-21swapper/212:29:322
1345799130,2cyclictest0-21swapper/211:55:082
1345799130,2cyclictest0-21swapper/210:41:032
1345799130,2cyclictest0-21swapper/209:21:142
1345799130,2cyclictest0-21swapper/208:40:182
1345799130,2cyclictest0-21swapper/207:35:122
1345799130,12cyclictest0-21swapper/212:05:412
1345799130,12cyclictest0-21swapper/211:41:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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