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2025-11-22 - 14:39

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 Nov 22, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22129212095,17sleep30-21swapper/307:05:253
22586211696,15sleep20-21swapper/207:06:122
22636210376,21sleep00-21swapper/007:06:500
2253229978,13sleep10-21swapper/107:05:311
24672680,0sleep20-21swapper/211:57:562
104472280,0sleep0101ktimersoftd/009:13:060
72712250,0sleep20-21swapper/209:44:552
153722250,1sleep315373-21sh12:10:473
2291299221,3cyclictest5129-21runrttasks09:50:142
2291299221,3cyclictest17497-21sh11:05:142
223852220,1sleep30-21swapper/312:19:363
2291299211,2cyclictest0-21swapper/208:10:132
22910992118,2cyclictest23749-21kworker/u8:010:02:040
2291099211,18cyclictest26807-21ssh11:15:140
2291099200,2cyclictest0-21swapper/011:05:130
2291099200,2cyclictest0-21swapper/008:10:130
305382190,0sleep00-21swapper/011:53:240
40762180,1sleep30-21swapper/309:40:273
22910991811,6cyclictest17408-21sh12:14:050
314932170,1sleep20-21swapper/210:10:162
275122170,0sleep30-21swapper/310:40:203
2291299171,3cyclictest0-21swapper/211:30:132
2291199171,13cyclictest26823-21munin-run11:49:591
2291199170,15cyclictest0-21swapper/109:10:111
2291399161,3cyclictest6967-21diskmemload09:50:183
2291299161,3cyclictest26707-21ssh11:15:052
2291199161,13cyclictest16962-21ssh11:04:411
22910991612,2cyclictest17020-21sh09:55:150
22910991610,5cyclictest25061-1kworker/u9:012:26:040
2291399151,3cyclictest7172-21ssh12:37:013
22913991512,2cyclictest0-21swapper/309:25:243
2291399151,12cyclictest27391-21apt-get08:40:123
22913991510,3cyclictest2373-21ssh10:48:563
22913991510,3cyclictest20350-21ssh09:24:033
22913991510,3cyclictest0-21swapper/310:07:063
2291399150,13cyclictest10140-21ssh11:30:353
2291299151,12cyclictest5129-21runrttasks11:14:582
2291299151,12cyclictest0-21swapper/212:05:402
22912991510,3cyclictest4904-21munin-node2
22912991510,3cyclictest4454-21ps10:50:202
2291299150,13cyclictest0-21swapper/212:25:232
2291299150,13cyclictest0-21swapper/210:42:292
2291199150,3cyclictest0-21swapper/111:05:551
2291199150,13cyclictest4366-21nscd11:17:511
2291199150,13cyclictest0-21swapper/112:20:261
2291099151,3cyclictest1515-21perl08:55:140
22910991512,2cyclictest7267-21kworker/u8:109:53:040
22910991512,2cyclictest22335-21kworker/u8:012:36:040
22910991512,2cyclictest0-21swapper/010:25:160
2291099150,13cyclictest0-21swapper/008:35:000
2291099150,13cyclictest0-21swapper/008:35:000
2291399149,3cyclictest25422-21ssh12:21:553
2291399149,3cyclictest17847-21ssh11:40:143
2291399149,3cyclictest0-21swapper/311:10:133
2291399149,3cyclictest0-21swapper/308:10:133
2291399142,6cyclictest23133-21copy08:30:003
2291399142,6cyclictest23133-21copy08:30:003
2291399141,3cyclictest0-21swapper/309:46:483
22913991411,2cyclictest0-21swapper/311:49:123
22913991411,2cyclictest0-21swapper/311:20:233
22913991411,2cyclictest0-21swapper/311:18:333
22913991411,2cyclictest0-21swapper/310:22:133
2291399141,11cyclictest9074-21ssh09:10:483
2291399140,2cyclictest0-21swapper/310:28:033
2291399140,2cyclictest0-21swapper/309:30:133
2291399140,2cyclictest0-21swapper/308:45:123
2291399140,13cyclictest0-21swapper/311:26:123
2291399140,12cyclictest0-21swapper/310:57:153
2291399140,12cyclictest0-21swapper/310:01:253
2291299149,3cyclictest26717-21ssh12:24:042
2291299149,3cyclictest24282-21ssh10:36:512
2291299142,6cyclictest0-21swapper/210:35:012
2291299141,11cyclictest0-21swapper/209:32:342
2291299140,13cyclictest0-21swapper/211:29:482
2291299140,12cyclictest21862-21ssh12:18:452
2291299140,12cyclictest1955-21ssh10:48:152
2291299140,12cyclictest18199-21df_abs11:40:142
2291299140,12cyclictest15396-21ssh10:27:272
2291299140,12cyclictest0-21swapper/211:38:082
2291299140,12cyclictest0-21swapper/210:55:122
2291299140,12cyclictest0-21swapper/210:00:242
2291299140,12cyclictest0-21swapper/208:15:122
2291199149,3cyclictest5010-21snmpd12:26:211
2291199141,2cyclictest17839-21apt-get11:40:131
22911991411,2cyclictest0-21swapper/109:55:141
22911991410,2cyclictest6967-21diskmemload12:15:331
22911991410,2cyclictest0-21swapper/110:17:231
2291199140,3cyclictest10583-21ssh09:47:411
2291199140,12cyclictest6967-21diskmemload11:27:291
2291199140,12cyclictest6967-21diskmemload09:34:031
2291199140,12cyclictest32618-21awk07:30:261
2291199140,12cyclictest0-21swapper/112:03:501
2291199140,12cyclictest0-21swapper/110:57:111
2291199140,12cyclictest0-21swapper/110:33:401
22910991411,2cyclictest1270-21kworker/u8:111:58:050
2291099140,2cyclictest0-21swapper/011:26:050
2291099140,12cyclictest0-21swapper/012:05:000
2291099140,12cyclictest0-21swapper/009:20:120
2291099140,12cyclictest0-21swapper/008:25:140
2291099140,12cyclictest0-21swapper/008:25:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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