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2026-06-16 - 17:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #4

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack7slot4s.osadl.org (updated Tue Jun 16, 2026 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
564199663,44cyclictest4478-21ssh12:35:150
565899603,29cyclictest28147-21ssh11:00:122
5641995837,7cyclictest12-21ksoftirqd/007:25:130
564199533,34cyclictest8373-21ssh11:25:120
564199524,8cyclictest131rcu_preempt10:30:110
565899511,26cyclictest24402-21ssh12:10:132
565899501,32cyclictest6378-21ssh12:00:122
564199481,33cyclictest29822-21ssh11:55:140
5667994436,5cyclictest35966irq/58-eth010:10:143
566799433,3cyclictest0-21swapper/311:25:113
565899421,33cyclictest11829-21ssh11:45:112
564999411,31cyclictest17349-21ssh11:30:131
564999411,31cyclictest17349-21ssh11:30:121
5649994026,10cyclictest32634-21apt-get08:45:121
566799383,21cyclictest35966irq/58-eth009:20:143
566799372,3cyclictest0-21swapper/311:15:133
5667993718,12cyclictest35966irq/58-eth009:55:343
5667993718,12cyclictest35966irq/58-eth009:55:333
565899371,27cyclictest13729-21ssh11:10:112
566799367,24cyclictest35966irq/58-eth010:55:133
564199365,6cyclictest131rcu_preempt12:30:120
564199363,8cyclictest131rcu_preempt08:45:140
565899340,19cyclictest20809-21ssh11:50:142
566799332,3cyclictest36066irq/59-eth009:35:133
565899339,9cyclictest24099-21diskmemload12:29:312
564199332,23cyclictest2895-21ssh10:10:140
566799322,11cyclictest0-21swapper/311:05:123
566799321,7cyclictest0-21swapper/309:45:103
566799321,6cyclictest0-21swapper/312:00:113
564199323,22cyclictest29964-21ssh10:25:140
564199322,22cyclictest26346-21/usr/sbin/munin10:05:300
564199322,19cyclictest12-21ksoftirqd/008:55:130
566799314,23cyclictest0-21swapper/312:35:133
566799312,3cyclictest0-21swapper/312:25:153
566799312,2cyclictest0-21swapper/307:35:133
566799312,21cyclictest35966irq/58-eth012:30:123
565899319,13cyclictest27-21ksoftirqd/207:10:262
565899314,10cyclictest27-21ksoftirqd/208:15:212
564199314,3cyclictest131rcu_preempt11:20:140
564199313,17cyclictest12-21ksoftirqd/009:45:110
564199312,21cyclictest23736-21ssh10:55:300
564199311,22cyclictest13730-21ssh09:40:150
566799304,22cyclictest35966irq/58-eth009:50:133
565899302,20cyclictest22776-21ssh11:15:142
565899302,20cyclictest15369-21ssh12:05:142
5649993017,6cyclictest7178-21apt-get07:45:131
5649993014,9cyclictest0-21swapper/112:05:131
564199303,3cyclictest131rcu_preempt12:20:120
566799295,18cyclictest0-21swapper/309:40:143
566799292,20cyclictest0-21swapper/311:50:153
566799292,20cyclictest0-21swapper/310:35:123
566799292,20cyclictest0-21swapper/310:35:113
566799291,7cyclictest0-21swapper/311:00:133
566799291,7cyclictest0-21swapper/310:30:123
566799291,2cyclictest0-21swapper/310:20:143
565899294,15cyclictest27-21ksoftirqd/209:46:422
5658992911,12cyclictest0-21swapper/212:33:212
5649992917,9cyclictest29905-21apt-get07:35:131
5649992916,8cyclictest0-21swapper/107:40:131
564199292,19cyclictest25142-21ssh10:20:290
564199292,19cyclictest14584-21cat10:50:300
566799284,14cyclictest35966irq/58-eth010:50:143
566799282,5cyclictest0-21swapper/309:30:133
566799281,6cyclictest0-21swapper/308:40:123
566799281,5cyclictest0-21swapper/311:49:543
565899286,8cyclictest27-21ksoftirqd/210:29:102
565899285,13cyclictest131rcu_preempt10:16:202
565899285,12cyclictest131rcu_preempt10:51:242
565899284,7cyclictest27-21ksoftirqd/209:35:052
565899282,11cyclictest0-21swapper/207:40:142
5658992814,10cyclictest0-21swapper/210:45:142
5658992812,6cyclictest0-21swapper/211:06:162
565899281,20cyclictest2868-21ssh11:40:152
5658992811,11cyclictest0-21swapper/209:32:072
564999283,5cyclictest21-21ksoftirqd/109:40:211
5649992815,10cyclictest6566-21apt-get10:30:121
564199286,12cyclictest0-21swapper/009:55:130
564199286,12cyclictest0-21swapper/009:55:120
566799274,20cyclictest0-21swapper/311:40:013
566799274,20cyclictest0-21swapper/311:40:003
566799273,15cyclictest0-21swapper/310:49:303
566799272,3cyclictest0-21swapper/312:15:143
566799271,5cyclictest0-21swapper/309:10:223
566799271,3cyclictest0-21swapper/310:40:133
566799271,3cyclictest0-21swapper/308:30:123
566799271,3cyclictest0-21swapper/307:15:113
566799271,23cyclictest0-21swapper/312:10:123
565899279,12cyclictest0-21swapper/211:58:202
565899276,8cyclictest27-21ksoftirqd/209:55:372
565899276,8cyclictest27-21ksoftirqd/209:55:362
565899276,8cyclictest27-21ksoftirqd/209:18:352
565899276,7cyclictest27-21ksoftirqd/210:22:572
565899276,12cyclictest27-21ksoftirqd/210:32:582
565899276,11cyclictest27-21ksoftirqd/210:39:082
565899276,11cyclictest27-21ksoftirqd/210:39:072
565899275,8cyclictest27-21ksoftirqd/212:24:272
565899275,14cyclictest27-21ksoftirqd/208:45:132
565899271,16cyclictest19111-21ssh10:55:132
5658992711,10cyclictest27-21ksoftirqd/211:20:142
5658992710,11cyclictest0-21swapper/209:27:572
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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