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2026-06-19 - 20:13

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 Fri Jun 19, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21526998435,13cyclictest27-21ksoftirqd/208:25:122
2151899725,57cyclictest16131-21ssh11:20:141
2152699662,42cyclictest30401-21ssh11:10:122
21534995939,13cyclictest35966irq/58-eth007:50:123
2150799541,39cyclictest7037-21ssh11:15:140
2150799524,36cyclictest30386-21ssh11:10:110
2150799512,43cyclictest5473-21ssh11:50:130
2153499504,25cyclictest35966irq/58-eth009:20:143
2152699509,31cyclictest0-21swapper/212:10:132
2151899506,4cyclictest131rcu_preempt12:25:121
2153499477,26cyclictest35966irq/58-eth009:10:133
2150799462,4cyclictest131rcu_preempt08:30:150
2152699432,35cyclictest14483-21ssh11:55:132
2152699432,24cyclictest15213-21sh09:50:132
2151899422,27cyclictest13072-21ssh12:30:131
2153499412,23cyclictest35966irq/58-eth007:30:133
2151899412,30cyclictest14499-21ssh11:55:131
21507994118,16cyclictest24291-21ssh09:55:110
2153499404,21cyclictest35966irq/58-eth009:45:123
2151899391,30cyclictest24286-21ssh09:55:121
2150799391,23cyclictest15200-21diskmemload09:50:130
2153499383,20cyclictest35966irq/58-eth009:35:123
2150799381,29cyclictest31332-21sshd07:20:140
2152699372,18cyclictest15057-21rm10:42:322
21534993618,11cyclictest35966irq/58-eth012:25:113
2150799363,6cyclictest131rcu_preempt07:45:150
2150799363,24cyclictest12-21ksoftirqd/008:20:130
21507993621,9cyclictest12-21ksoftirqd/011:34:210
2153499352,17cyclictest35966irq/58-eth008:10:123
2151899352,21cyclictest11442-21ssh09:30:121
21518993515,12cyclictest0-21swapper/110:20:141
21507993510,17cyclictest12-21ksoftirqd/008:25:140
2153499341,20cyclictest35966irq/58-eth009:00:133
2152699346,22cyclictest27-21ksoftirqd/212:01:322
2152699343,23cyclictest0-21swapper/210:49:152
2151899341,24cyclictest22025-21ssh12:35:141
2150799345,18cyclictest12-21ksoftirqd/007:25:090
2150799332,23cyclictest7626-21ssh09:10:130
2153499321,21cyclictest35966irq/58-eth010:05:123
21534993212,10cyclictest0-21swapper/308:55:133
2153499320,21cyclictest35966irq/58-eth009:40:133
2152699322,8cyclictest930-21snmpd11:05:122
2151899322,16cyclictest19080-21ssh10:10:131
2150799322,24cyclictest13733-21ssh10:25:140
21507993212,14cyclictest12-21ksoftirqd/012:15:140
2152699319,17cyclictest27-21ksoftirqd/210:33:322
2150799312,4cyclictest131rcu_preempt09:00:140
2152699305,5cyclictest27-21ksoftirqd/210:58:392
21526993016,12cyclictest261rcuc/212:15:132
21518993012,11cyclictest630-21Async09:36:311
2150799302,3cyclictest131rcu_preempt08:45:140
2150799302,22cyclictest27713-21ssh12:36:330
2153499293,17cyclictest0-21swapper/310:42:333
2152699294,10cyclictest27-21ksoftirqd/211:43:322
2152699293,19cyclictest0-21swapper/211:54:232
2152699293,19cyclictest0-21swapper/211:15:322
2152699292,19cyclictest11466-21ssh09:30:132
2152699291,21cyclictest23497-21ssh11:23:322
2152699290,21cyclictest0-21swapper/209:55:132
2150799292,21cyclictest25503-21ssh10:49:150
21507992916,7cyclictest0-21swapper/009:15:130
2153499283,18cyclictest35966irq/58-eth012:10:143
2153499283,18cyclictest0-21swapper/312:00:333
21534992811,9cyclictest35966irq/58-eth011:50:143
2152699285,16cyclictest27-21ksoftirqd/210:52:142
2152699283,18cyclictest0-21swapper/212:36:322
2152699282,20cyclictest0-21swapper/208:20:152
2152699281,18cyclictest28980-21cut11:45:152
2151899282,20cyclictest28850-21ssh11:45:121
2150799283,2cyclictest131rcu_preempt12:00:120
2150799283,16cyclictest5670-1kworker/u9:010:05:130
2150799282,19cyclictest6180-21ssh09:45:130
21507992812,10cyclictest0-21swapper/010:35:120
2152699275,11cyclictest131rcu_preempt11:38:122
2152699274,16cyclictest27346irq/40-dwc2_hso08:40:142
2152699272,22cyclictest7214-21diskmemload12:05:152
2152699272,19cyclictest0-21swapper/209:00:152
2152699272,15cyclictest28122-21ssh10:15:132
2152699271,22cyclictest29577-21ssh09:40:122
21526992711,4cyclictest27-21ksoftirqd/211:27:092
2151899273,9cyclictest0-21swapper/110:32:321
2151899272,19cyclictest29589-21rm11:09:311
2151899272,18cyclictest8500-21ssh10:40:141
2150799277,8cyclictest0-21swapper/008:00:130
2150799277,8cyclictest0-21swapper/008:00:120
2150799272,19cyclictest28126-21ssh10:15:140
2150799271,19cyclictest20474-21ssh09:35:120
2153499260,16cyclictest35966irq/58-eth010:45:123
2152699268,10cyclictest12229-21apt-get11:00:112
2152699266,11cyclictest27-21ksoftirqd/212:25:272
2152699264,8cyclictest27-21ksoftirqd/210:01:482
2152699264,8cyclictest0-21swapper/209:10:132
2152699264,15cyclictest27346irq/40-dwc2_hso11:30:112
2152699262,12cyclictest854-21sshd07:20:132
2152699262,10cyclictest0-21swapper/208:10:152
2151899262,17cyclictest25126-21ssh11:25:111
2151899260,18cyclictest73-21kswapd010:55:111
2150799262,19cyclictest8424-21ssh12:09:310
2153499257,10cyclictest35966irq/58-eth009:55:113
2153499256,16cyclictest35966irq/58-eth011:35:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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