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2026-05-03 - 02:22

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 Sun May 03, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14082115104,6sleep10-21swapper/119:07:521
32242210278,18sleep00-21swapper/019:05:060
1452210184,12sleep20-21swapper/219:08:242
129129988,6sleep30-21swapper/319:06:203
59642780,1sleep20-21swapper/220:40:582
106372740,1sleep00-21swapper/023:58:200
284902720,0sleep10-21swapper/120:16:021
162612510,1sleep30-21swapper/319:45:193
1603994323,18cyclictest0-21swapper/219:15:122
160499361,17cyclictest0-21swapper/321:40:103
1603993617,18cyclictest0-21swapper/222:50:112
62502330,2sleep229-21rcuc/200:29:002
1602993315,16cyclictest0-21swapper/121:50:131
160199280,26cyclictest0-21swapper/022:15:130
160499258,15cyclictest0-21swapper/321:50:133
54242240,1sleep30-21swapper/323:16:513
49982240,0sleep00-21swapper/021:31:100
247712230,1sleep2301ktimersoftd/222:28:202
160399230,2cyclictest0-21swapper/200:30:122
150522230,0sleep10-21swapper/122:17:441
91972220,2sleep339-21ksoftirqd/320:50:123
160399221,19cyclictest12128-21ssh22:15:132
160499210,19cyclictest0-21swapper/323:40:113
160499210,19cyclictest0-21swapper/321:35:133
160199210,2cyclictest0-21swapper/000:30:120
160199210,19cyclictest0-21swapper/022:20:110
160499200,2cyclictest0-21swapper/323:30:113
160399200,18cyclictest0-21swapper/222:20:112
220742190,0sleep00-21swapper/000:10:190
160299190,17cyclictest7178-21ssh00:30:121
72582180,1sleep10-21swapper/120:45:141
62292180,0sleep00-21swapper/022:08:290
305952170,1sleep00-21swapper/022:00:120
160499161,13cyclictest7822-21apt-get19:25:073
160499161,13cyclictest27465-21python21:56:013
160499161,13cyclictest1879-21aten2.4-expect19:10:113
160499160,13cyclictest0-21swapper/323:09:303
160299161,3cyclictest8364-21irqstats23:20:161
1602991610,4cyclictest0-21swapper/100:23:551
19822150,1sleep10-21swapper/122:39:051
160499151,12cyclictest0-21swapper/300:10:143
1604991510,3cyclictest25505-21ssh21:19:343
1604991510,3cyclictest15833-21ssh22:53:373
1604991510,3cyclictest0-21swapper/323:00:123
1604991510,3cyclictest0-21swapper/319:20:113
160499150,3cyclictest21059-21latency_hist21:50:003
160499150,13cyclictest0-21swapper/323:25:353
1603991512,2cyclictest0-21swapper/220:10:112
1603991510,3cyclictest3578-21iostat_ios21:30:152
160399150,13cyclictest25469-21ssh21:19:312
160399150,13cyclictest0-21swapper/223:17:312
1602991511,2cyclictest0-21swapper/119:45:301
160299150,13cyclictest5549-21runrttasks23:17:041
160199151,12cyclictest0-21swapper/019:35:160
1601991510,3cyclictest5289-21fschecks_count20:40:120
280682140,2sleep00-21swapper/021:21:120
1604991411,2cyclictest16721-21diskmemload00:00:053
1604991411,2cyclictest0-21swapper/322:57:243
160499140,3cyclictest17270-21irqstats00:05:173
160499140,2cyclictest27152-21ssh00:15:553
1603991411,2cyclictest0-21swapper/221:11:112
1603991411,2cyclictest0-21swapper/200:10:402
160399141,11cyclictest10892-21munin-node2
1603991410,2cyclictest16721-21diskmemload00:06:312
160399140,2cyclictest0-21swapper/223:25:012
160399140,2cyclictest0-21swapper/223:20:502
160399140,2cyclictest0-21swapper/223:13:502
160399140,2cyclictest0-21swapper/222:33:002
160399140,13cyclictest0-21swapper/221:47:012
160399140,12cyclictest8560-21fschecks_time19:25:142
160399140,12cyclictest24705-21ssh23:38:222
160399140,12cyclictest0-21swapper/223:05:372
160399140,12cyclictest0-21swapper/221:27:312
160399140,12cyclictest0-21swapper/220:25:112
160299149,3cyclictest18162-21ssh21:10:251
160299149,3cyclictest1815-21sensors_temp20:31:011
160299149,3cyclictest0-21swapper/122:20:431
1602991412,1cyclictest0-21swapper/123:04:341
1602991411,2cyclictest0-21swapper/122:41:141
1602991411,2cyclictest0-21swapper/122:34:241
1602991411,2cyclictest0-21swapper/119:11:031
1602991411,2cyclictest0-21swapper/100:02:431
1602991410,2cyclictest0-21swapper/123:10:041
1602991410,2cyclictest0-21swapper/122:50:061
160299140,2cyclictest0-21swapper/122:48:031
160299140,13cyclictest0-21swapper/123:45:141
160299140,12cyclictest16721-21diskmemload23:56:581
160299140,12cyclictest16721-21diskmemload23:26:571
160299140,12cyclictest0-21swapper/122:00:521
160299140,12cyclictest0-21swapper/121:40:161
160299140,12cyclictest0-21swapper/119:55:151
160299140,12cyclictest0-21swapper/100:39:131
160199142,6cyclictest0-21swapper/021:15:010
160199140,12cyclictest12134-21aten2.4_r3power00:00:120
1604991310,2cyclictest0-21swapper/323:55:353
1604991310,2cyclictest0-21swapper/323:20:343
1604991310,2cyclictest0-21swapper/322:36:303
1604991310,2cyclictest0-21swapper/321:28:343
1604991310,2cyclictest0-21swapper/319:35:153
1604991310,2cyclictest0-21swapper/300:35:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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