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2026-09-06 - 20:14

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 Sun Sep 06, 2026 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28968997841,26cyclictest35966irq/58-eth011:10:123
2896099601,35cyclictest19070-21ssh09:30:142
28968994730,10cyclictest35966irq/58-eth010:25:123
2896099461,31cyclictest15001-21diskmemload09:25:102
2894499431,22cyclictest22760-21ssh09:50:120
28952994219,18cyclictest21-21ksoftirqd/111:30:121
2896899412,24cyclictest35966irq/58-eth010:20:133
2896899401,24cyclictest35966irq/58-eth007:10:123
2896099402,23cyclictest1283-21ssh12:20:142
2896099401,28cyclictest15439-21ssh09:10:162
2896899382,23cyclictest35966irq/58-eth012:15:133
2896099383,27cyclictest15705-21ssh10:40:132
28968993714,13cyclictest35966irq/58-eth010:40:143
2894499373,25cyclictest8350-21ssh10:00:130
2896099353,24cyclictest0-21swapper/212:25:242
2896099353,24cyclictest0-21swapper/212:25:232
2896099344,19cyclictest0-21swapper/211:35:132
2894499344,26cyclictest26539-21ssh11:40:130
28968993217,9cyclictest35966irq/58-eth010:55:143
2896099324,19cyclictest27346irq/40-dwc2_hso07:35:132
2896099323,10cyclictest0-21swapper/212:30:172
28960993222,5cyclictest15737-21sh12:10:132
2896099322,19cyclictest12023-21ssh10:20:132
2896099315,17cyclictest27346irq/40-dwc2_hso08:00:132
2896099312,24cyclictest21113-21ssh11:55:152
2896099303,18cyclictest27346irq/40-dwc2_hso08:45:122
2896099302,21cyclictest0-21swapper/207:10:132
28960993015,5cyclictest27-21ksoftirqd/212:09:282
28960993011,15cyclictest1-21systemd12:15:162
2895299301,23cyclictest15734-21ssh12:10:121
2894499303,21cyclictest19441-21ssh11:00:150
2896899292,16cyclictest321rcuc/312:25:123
2896899292,16cyclictest321rcuc/312:25:123
2896899292,15cyclictest35966irq/58-eth011:20:133
2896099296,11cyclictest27-21ksoftirqd/211:07:512
2896099293,17cyclictest27346irq/40-dwc2_hso08:50:132
2896099292,18cyclictest27346irq/40-dwc2_hso09:00:132
28960992915,10cyclictest927-21/usr/sbin/munin09:20:282
28960992912,8cyclictest27-21ksoftirqd/210:00:252
2895299291,17cyclictest31751-21ssh09:55:121
2896899281,17cyclictest35966irq/58-eth007:30:103
2896099283,15cyclictest27346irq/40-dwc2_hso08:10:122
2896099282,9cyclictest0-21swapper/209:05:132
2896099282,16cyclictest27346irq/40-dwc2_hso10:30:132
2896099282,11cyclictest0-21swapper/207:40:052
28960992811,14cyclictest261rcuc/211:25:112
2894499281,19cyclictest28400-21ssh11:05:140
2896899276,13cyclictest321rcuc/309:40:123
2896099278,4cyclictest27-21ksoftirqd/209:55:522
2896099272,10cyclictest0-21swapper/209:40:142
2896099271,20cyclictest28099-21ssh09:35:122
2896099271,17cyclictest26745-21uniq11:40:182
2896099271,14cyclictest31553-21sh09:55:032
2895299271,19cyclictest989-21ssh09:20:141
2896099264,15cyclictest27346irq/40-dwc2_hso07:30:122
2896099263,12cyclictest6650-21ssh10:35:152
2896099260,8cyclictest26441-21ssh10:10:152
2895299261,7cyclictest17749-21perl11:35:161
2895299261,14cyclictest21-21ksoftirqd/109:15:141
2894499263,7cyclictest131rcu_preempt11:30:130
2894499263,19cyclictest1268-21ssh12:20:130
2894499261,19cyclictest6752-21ssh12:05:140
28968992512,6cyclictest35966irq/58-eth012:35:163
2896899251,14cyclictest35966irq/58-eth009:25:113
2896099252,16cyclictest0-21swapper/212:35:172
28960992515,8cyclictest0-21swapper/211:10:142
2896099250,5cyclictest11206-21acpi07:25:112
2895299256,13cyclictest0-21swapper/111:40:161
2895299253,15cyclictest3094-21ssh11:45:111
28968992411,7cyclictest35966irq/58-eth010:45:133
2896899241,12cyclictest35966irq/58-eth007:20:133
2896099245,16cyclictest9901-21kthreadcore07:55:202
2896099244,12cyclictest27346irq/40-dwc2_hso10:15:132
2896099243,14cyclictest27346irq/40-dwc2_hso08:55:142
2896099243,14cyclictest27346irq/40-dwc2_hso08:55:142
2896099241,12cyclictest16095-21sort11:50:282
28960992411,10cyclictest19217-21ssh09:46:152
2895299244,15cyclictest28282-21ssh12:35:161
2894499242,19cyclictest24397-21ssh09:15:140
2896899235,11cyclictest35966irq/58-eth011:15:143
2896899232,13cyclictest35966irq/58-eth009:10:143
2896099236,13cyclictest0-21swapper/207:20:012
2896099235,4cyclictest27-21ksoftirqd/210:25:322
2896099232,15cyclictest27346irq/40-dwc2_hso10:55:132
2896099232,12cyclictest30122-21ssh12:00:132
2896099232,11cyclictest23391-21xargs11:00:312
2896099232,10cyclictest18040-21irqrtprio08:05:172
2896099231,18cyclictest32067-21tune2fs08:20:152
2894499231,19cyclictest10248-21apt-get12:25:130
2894499231,19cyclictest10248-21apt-get12:25:120
2896899222,13cyclictest35966irq/58-eth008:10:113
28968992211,8cyclictest0-21swapper/310:00:283
2896899221,14cyclictest0-21swapper/309:45:133
2896099229,5cyclictest261rcuc/208:25:122
2896099228,7cyclictest13861-21apt-get08:35:162
2896099225,4cyclictest27-21ksoftirqd/210:05:272
2896099225,14cyclictest25467-21kernelversion10:45:182
2896099224,15cyclictest30743-21fschecks_time07:45:162
2896099222,13cyclictest27346irq/40-dwc2_hso10:50:132
2896099222,11cyclictest27446-21kthreadcore09:15:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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