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2026-06-10 - 15:58

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 Wed Jun 10, 2026 12:45:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
901699592,45cyclictest7424-21ssh12:00:130
901699563,43cyclictest5068-21ssh10:10:110
902799554,3cyclictest0-21swapper/108:30:101
902799531,4cyclictest4783-21ssh12:35:121
901699532,38cyclictest24281-21ssh11:15:120
9035995217,19cyclictest14012-21ssh10:15:092
901699512,41cyclictest1613-21ssh12:15:120
9016995020,22cyclictest12-21ksoftirqd/009:25:120
903599481,30cyclictest28391-21ssh12:30:122
904399474,28cyclictest35966irq/58-eth012:15:123
903599472,19cyclictest31380-21ssh10:40:352
902799462,3cyclictest4099-21ssh09:15:121
902799461,36cyclictest9725-21ssh11:25:151
901699462,34cyclictest16464-21ssh09:40:120
901699460,34cyclictest27585-21ssh09:10:120
901699460,34cyclictest27585-21ssh09:10:110
902799433,22cyclictest13059-21ssh09:20:111
902799411,4cyclictest0-21swapper/107:30:121
902799410,4cyclictest736-21apt-get07:35:131
904399403,21cyclictest35966irq/58-eth009:15:123
903599402,21cyclictest4010-21ssh11:02:352
901699402,29cyclictest3077-21ssh10:45:140
901699401,30cyclictest27519-21ssh11:35:130
904399392,22cyclictest35966irq/58-eth010:05:133
903599392,20cyclictest15655-21sh09:55:352
902799381,6cyclictest27197-21diskmemload09:35:111
903599372,29cyclictest22638-21ssh11:13:352
902799371,4cyclictest1596-21apt-get12:15:121
901699372,28cyclictest10511-21rm12:20:100
904399364,23cyclictest35966irq/58-eth012:30:113
9043993619,11cyclictest35966irq/58-eth011:05:133
9043993619,11cyclictest35966irq/58-eth011:05:123
904399361,23cyclictest35966irq/58-eth008:40:123
904399361,23cyclictest35966irq/58-eth008:40:113
9035993616,15cyclictest27-21ksoftirqd/211:15:122
903599361,14cyclictest630-21Async09:36:312
902799367,25cyclictest22625-21irqrtprio11:50:171
902799361,8cyclictest28837-21ntp_192.168.11412:10:241
902799361,6cyclictest15643-21ntpq10:50:241
9027993611,17cyclictest7442-21diskmemload12:00:131
903599359,9cyclictest23191-21kworker/2:009:45:132
902799358,23cyclictest23990-21cat12:25:291
902799358,23cyclictest23990-21cat12:25:281
902799352,3cyclictest30952-21apt-get09:30:121
902799351,9cyclictest10376-21timerandwakeup11:05:271
902799351,9cyclictest10376-21timerandwakeup11:05:271
902799351,8cyclictest19158-21kthreadcore08:25:211
902799351,8cyclictest19158-21kthreadcore08:25:201
902799351,10cyclictest29659-21sed11:00:011
901699352,23cyclictest30963-21ssh09:30:110
904399345,16cyclictest35966irq/58-eth009:30:133
904399341,21cyclictest35966irq/58-eth009:00:113
903599343,9cyclictest0-21swapper/210:09:092
902799343,23cyclictest10534-21ssh12:20:131
902799341,9cyclictest6674-21tr11:40:211
902799341,8cyclictest17205-21kernelversion09:40:181
902799341,8cyclictest16145-21cut07:15:191
902799341,6cyclictest28474-21kthreadcore09:45:211
902799341,6cyclictest12415-21kthreadcore07:45:211
902799341,5cyclictest15303-21kthreadcore11:45:221
902799341,10cyclictest1398-21ls11:00:271
902799340,5cyclictest24277-21apt-get11:15:131
903599336,17cyclictest27-21ksoftirqd/210:20:132
903599335,16cyclictest27346irq/40-dwc2_hso08:05:132
903599333,13cyclictest261rcuc/209:35:122
902799337,24cyclictest29734-21kthreadcore10:40:211
902799333,4cyclictest0-21swapper/107:55:121
902799331,9cyclictest31646-21grep11:35:291
902799331,9cyclictest22033-21latency07:20:211
902799331,8cyclictest8756-21grep10:30:161
902799331,8cyclictest5213-21kthreadcore10:45:221
902799331,8cyclictest3386-21diskstats08:45:161
902799331,8cyclictest27889-21cut08:35:221
902799331,8cyclictest24964-21kthreadcore09:05:211
902799331,8cyclictest22159-21fschecks_time09:25:141
902799331,8cyclictest22119-21missed_timers11:30:231
902799331,8cyclictest2139-21cpu08:10:131
902799331,8cyclictest21338-21cat10:35:291
902799331,8cyclictest14660-21irqrtprio10:15:161
902799331,6cyclictest31951-21ssh10:25:101
902799331,5cyclictest31485-21cut08:05:201
902799331,5cyclictest31154-21fschecks_time11:55:181
902799331,5cyclictest17436-21users08:55:311
902799331,10cyclictest29737-21grep09:10:211
902799331,10cyclictest29737-21grep09:10:201
904399323,16cyclictest35966irq/58-eth010:35:143
903599321,13cyclictest24944-21kworker/u8:211:39:342
902799321,9cyclictest15527-21fschecks_time11:10:161
902799321,8cyclictest19421-21latency_hist10:00:011
902799321,8cyclictest16876-21kthreadcore07:50:191
902799321,7cyclictest2382-21grep09:50:181
902799321,6cyclictest3260-21latency_hist08:45:011
902799321,6cyclictest25907-21kthreadcore07:25:211
902799321,6cyclictest23606-21cut10:20:161
902799321,12cyclictest5196-21diskstats10:10:131
902799320,7cyclictest22439-21latency_hist09:05:011
904399313,20cyclictest35966irq/58-eth010:15:093
9043993113,12cyclictest35966irq/58-eth012:05:153
903599313,22cyclictest0-21swapper/211:33:352
902799319,19cyclictest0-21swapper/111:20:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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