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2026-03-27 - 20:33

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 Fri Mar 27, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24647211996,18sleep30-21swapper/307:09:023
24493211695,16sleep00-21swapper/007:07:030
23990210280,17sleep20-21swapper/207:05:452
2454629887,6sleep10-21swapper/107:07:441
67442880,0sleep30-21swapper/309:05:003
268702750,0sleep20-21swapper/211:08:572
213782740,1sleep221384-21cpuspeed_turbos08:20:122
108762700,0sleep00-21swapper/012:33:440
24753993212,2cyclictest0-21swapper/311:30:103
269042260,0sleep10-21swapper/109:28:151
2475199265,2cyclictest0-21swapper/111:30:101
45952250,1sleep2301ktimersoftd/209:38:512
2475099210,19cyclictest0-21swapper/008:40:120
2475399200,18cyclictest0-21swapper/308:25:103
24752992017,2cyclictest0-21swapper/211:10:112
24752992017,2cyclictest0-21swapper/208:05:112
183442200,0sleep20-21swapper/211:00:112
2475399190,2cyclictest0-21swapper/310:50:113
2475399190,17cyclictest0-21swapper/307:50:123
2475199191,13cyclictest21-21rcuc/109:32:041
2475199170,2cyclictest0-21swapper/111:16:051
2475099171,13cyclictest0-21swapper/012:24:150
2475399160,13cyclictest0-21swapper/309:51:033
2475199161,13cyclictest0-21swapper/110:55:141
24750991611,3cyclictest8133-21munin-node0
2475299151,2cyclictest8756-21diskmemload10:10:052
24752991510,3cyclictest24794-21hddtemp_smartct11:40:152
24751991512,2cyclictest836-21kworker/u8:210:33:041
24751991512,2cyclictest5768-21kworker/u8:010:04:041
24751991512,2cyclictest29032-21kworker/u8:011:51:041
24751991512,2cyclictest27199-21kworker/u8:108:41:041
24751991512,2cyclictest26392-21kworker/u8:212:34:041
2475199151,12cyclictest0-21swapper/111:03:011
24751991510,3cyclictest0-21swapper/112:27:321
2475199150,13cyclictest0-21swapper/108:31:011
2475199150,12cyclictest0-21swapper/112:14:051
2475099152,11cyclictest0-21swapper/012:08:510
2475099151,3cyclictest3728-21runrttasks11:53:480
2475099151,12cyclictest30928-21apt-get10:40:050
24750991510,3cyclictest0-21swapper/009:15:130
2475099150,13cyclictest0-21swapper/010:13:490
289512140,2sleep00-21swapper/010:36:570
2475399140,2cyclictest0-21swapper/310:20:143
2475199149,3cyclictest0-21swapper/111:48:441
2475199149,3cyclictest0-21swapper/110:16:011
24751991411,2cyclictest18335-21kworker/u8:110:12:041
2475199140,3cyclictest0-21swapper/111:22:011
2475199140,12cyclictest0-21swapper/110:51:071
2475199140,12cyclictest0-21swapper/107:45:171
2475099149,3cyclictest30921-21ssh11:12:460
2475099149,3cyclictest14236-21ssh10:21:330
2475099149,3cyclictest0-21swapper/009:46:580
2475099142,6cyclictest0-21swapper/009:35:010
24750991411,2cyclictest8756-21diskmemload12:11:270
24750991411,2cyclictest8756-21diskmemload10:03:470
24750991411,2cyclictest0-21swapper/012:25:270
24750991411,2cyclictest0-21swapper/007:41:020
2475099141,11cyclictest12710-21ssh09:13:420
2475099141,11cyclictest12710-21ssh09:13:420
2475099140,3cyclictest0-21swapper/009:22:120
2475099140,2cyclictest0-21swapper/012:01:030
2475099140,2cyclictest0-21swapper/011:05:270
2475099140,2cyclictest0-21swapper/009:29:280
2475099140,13cyclictest0-21swapper/012:36:470
2475099140,13cyclictest0-21swapper/010:08:270
2475099140,13cyclictest0-21swapper/008:55:170
2475099140,12cyclictest0-21swapper/010:29:170
89882130,2sleep00-21swapper/007:50:140
84132130,2sleep08425-21rm09:42:180
2475399130,2cyclictest32283-21timerandwakeup07:26:033
2475399130,2cyclictest0-21swapper/312:16:013
2475299131,2cyclictest6566-21ssh10:47:172
24752991310,2cyclictest0-21swapper/211:35:132
24752991310,2cyclictest0-21swapper/209:10:132
24752991310,2cyclictest0-21swapper/209:10:132
2475299130,12cyclictest0-21swapper/211:29:032
2475299130,12cyclictest0-21swapper/210:25:132
2475299130,12cyclictest0-21swapper/209:20:132
2475199131,3cyclictest11957-21munin-node1
2475199131,10cyclictest8756-21diskmemload09:10:151
2475199131,10cyclictest8756-21diskmemload09:10:151
24751991310,2cyclictest8756-21diskmemload11:56:491
24751991310,2cyclictest31233-21kworker/u8:009:04:011
24751991310,2cyclictest31233-21kworker/u8:008:59:041
24751991310,2cyclictest27007-21kworker/u8:107:18:041
24751991310,2cyclictest2685-21kworker/u8:008:07:041
24751991310,2cyclictest12154-21kworker/u8:012:37:041
24751991310,2cyclictest0-21swapper/111:28:401
24751991310,2cyclictest0-21swapper/111:14:491
24751991310,2cyclictest0-21swapper/110:44:181
24751991310,2cyclictest0-21swapper/109:50:151
24751991310,2cyclictest0-21swapper/108:10:181
2475199130,2cyclictest0-21swapper/112:23:581
2475199130,2cyclictest0-21swapper/112:04:051
2475199130,2cyclictest0-21swapper/111:41:121
2475199130,2cyclictest0-21swapper/110:45:481
2475199130,2cyclictest0-21swapper/110:05:101
2475199130,2cyclictest0-21swapper/108:00:041
2475199130,12cyclictest0-21swapper/109:15:141
2475199130,11cyclictest0-21swapper/112:15:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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