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2026-07-16 - 16:38

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 Thu Jul 16, 2026 12:45:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
477099571,30cyclictest10391-21ssh12:20:112
474599554,9cyclictest131rcu_preempt09:20:130
477099540,33cyclictest27090-21ssh09:30:122
4745995331,9cyclictest12-21ksoftirqd/012:30:130
4760995125,20cyclictest21-21ksoftirqd/111:35:131
4760995125,20cyclictest21-21ksoftirqd/111:35:131
477099502,16cyclictest27346irq/40-dwc2_hso10:40:142
474599485,6cyclictest131rcu_preempt10:15:110
476099471,27cyclictest1342-21ssh12:15:141
476099471,27cyclictest1342-21ssh12:15:131
477099451,11cyclictest20770-21ssh11:50:122
477099442,33cyclictest22078-21ssh11:15:132
476099402,29cyclictest16839-21ssh11:30:131
474599404,25cyclictest27386-21ssh11:00:120
4760993928,4cyclictest2742-21apt-get08:15:141
4760993915,15cyclictest21-21ksoftirqd/109:50:131
4783993825,7cyclictest35966irq/58-eth010:40:143
477099382,9cyclictest6831-21ssh11:40:302
477099382,9cyclictest6831-21ssh11:40:302
477099381,14cyclictest14948-21fschecks_time10:35:162
474599380,26cyclictest29049-21sh10:25:140
474599380,26cyclictest29049-21sh10:25:140
478399374,18cyclictest35966irq/58-eth010:20:123
478399373,21cyclictest35966irq/58-eth012:20:103
477099372,28cyclictest30667-21cat11:35:292
477099372,28cyclictest30667-21cat11:35:292
477099372,27cyclictest776-21/usr/sbin/munin10:25:302
477099372,27cyclictest776-21/usr/sbin/munin10:25:292
477099372,17cyclictest729-21usage_EthcTask12:30:292
4770993711,4cyclictest17043-21ssh11:30:162
478399363,20cyclictest35966irq/58-eth010:05:123
4783993618,12cyclictest0-21swapper/311:40:133
4783993618,12cyclictest0-21swapper/311:40:123
477099362,18cyclictest9391-21cat12:35:292
4770993612,9cyclictest1568-21cron10:10:012
4783993514,4cyclictest36066irq/59-eth011:30:123
477099359,20cyclictest4725-21cyclictest07:10:132
477099357,10cyclictest18156-21sh10:55:022
477099352,12cyclictest23091-21diskmemload11:55:122
477099351,9cyclictest21780-21latency_hist11:15:022
4770993515,12cyclictest27-21ksoftirqd/208:55:132
477099341,14cyclictest31524-21grep11:00:292
4783993320,9cyclictest0-21swapper/311:25:113
477099337,5cyclictest2889-21cat09:50:312
477099332,10cyclictest0-21swapper/212:07:302
477099331,9cyclictest14009-21cut07:50:202
477099331,8cyclictest3870-21forks09:35:162
477099322,15cyclictest10661-21unixbench_multi12:00:292
477099321,10cyclictest9330-21ntp_192.168.11410:30:252
4760993211,14cyclictest21-21ksoftirqd/107:35:121
4760993211,14cyclictest21-21ksoftirqd/107:35:121
474599321,23cyclictest12-21ksoftirqd/008:05:140
4783993121,4cyclictest35966irq/58-eth011:50:113
477099311,20cyclictest27346irq/40-dwc2_hso08:45:122
4783993023,3cyclictest0-21swapper/311:05:113
4783993023,3cyclictest0-21swapper/311:05:113
4783993020,7cyclictest35966irq/58-eth009:30:123
4783993015,10cyclictest0-21swapper/311:45:123
478399301,16cyclictest35966irq/58-eth007:35:133
478399301,16cyclictest35966irq/58-eth007:35:133
477099305,5cyclictest27784-21kthreadcore08:40:202
477099304,8cyclictest28192-21ssh10:24:292
476099303,20cyclictest2567-21ssh11:40:131
476099303,20cyclictest2567-21ssh11:40:131
476099302,22cyclictest729-21usage_EthcTask12:30:291
4760993018,6cyclictest18535-21apt-get09:05:121
476099301,4cyclictest32766-21ssh10:45:121
474599302,23cyclictest20776-21ssh11:50:130
474599302,19cyclictest9366-21ssh10:50:130
4783992922,3cyclictest0-21swapper/312:25:113
477099292,20cyclictest0-21swapper/207:55:162
477099292,20cyclictest0-21swapper/207:40:142
477099291,16cyclictest11731-21ssh11:45:122
476099293,15cyclictest16322-21ssh10:00:131
476099292,21cyclictest13609-21usage_Anybus10:50:291
4783992818,5cyclictest0-21swapper/309:25:123
4783992811,12cyclictest35966irq/58-eth008:00:123
477099283,16cyclictest27346irq/40-dwc2_hso09:20:122
477099282,11cyclictest27731-21ssh12:29:292
4770992814,6cyclictest0-21swapper/209:05:152
4770992812,13cyclictest27-21ksoftirqd/211:05:112
4770992812,13cyclictest27-21ksoftirqd/211:05:112
476099284,4cyclictest21-21ksoftirqd/109:29:341
476099282,20cyclictest19754-21ssh12:05:291
4760992810,8cyclictest4725-21cyclictest11:20:121
478399273,9cyclictest0-21swapper/312:30:293
478399273,16cyclictest35966irq/58-eth010:35:143
4783992716,5cyclictest0-21swapper/308:35:133
477099273,18cyclictest27346irq/40-dwc2_hso08:25:122
477099272,20cyclictest0-21swapper/212:13:292
477099271,5cyclictest19605-21cut10:20:012
477099271,17cyclictest27346irq/40-dwc2_hso08:30:132
4760992719,4cyclictest23718-21apt-get10:40:131
4760992715,7cyclictest22055-21apt-get11:15:121
474599272,19cyclictest9561-21ssh12:19:290
474599272,19cyclictest9561-21ssh12:19:290
474599272,19cyclictest32449-21ssh11:37:290
474599272,19cyclictest32449-21ssh11:37:290
4783992620,2cyclictest0-21swapper/311:00:113
4783992618,5cyclictest0-21swapper/310:30:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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