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2026-07-26 - 00:38

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 Sat Jul 25, 2026 12:45:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2493099592,40cyclictest3234-21ssh12:05:162
24930995637,15cyclictest0-21swapper/211:45:142
2492299471,31cyclictest29252-21ssh09:20:151
2492299451,34cyclictest17329-21ssh10:25:131
2492299451,34cyclictest17329-21ssh10:25:131
24930994434,8cyclictest0-21swapper/212:20:152
2493099412,24cyclictest24802-21ssh12:35:162
2492299412,30cyclictest13551-21ssh10:05:141
24930994022,12cyclictest27346irq/40-dwc2_hso11:15:142
2492299402,31cyclictest21134-21ssh12:15:141
2493099395,26cyclictest261rcuc/211:35:152
2493099389,21cyclictest27-21ksoftirqd/209:50:162
24930993812,14cyclictest261rcuc/211:00:152
2492299382,7cyclictest131rcu_preempt09:10:161
2493999372,17cyclictest35966irq/58-eth011:05:123
2493999372,17cyclictest35966irq/58-eth011:05:123
24930993719,14cyclictest27-21ksoftirqd/207:45:132
2493099367,15cyclictest27-21ksoftirqd/208:50:152
24930993616,9cyclictest27-21ksoftirqd/209:10:152
2491299354,22cyclictest131rcu_preempt09:35:130
2493999345,24cyclictest35966irq/58-eth012:00:123
24939993417,14cyclictest0-21swapper/312:05:163
2493099343,16cyclictest24056-21ssh09:35:152
2492299341,27cyclictest22616-21ssh10:10:141
2492299341,26cyclictest5868-21ssh09:25:131
2492299341,26cyclictest1363-21ssh11:10:161
2493099332,25cyclictest15629-21ntp_192.168.11410:40:262
2493099331,18cyclictest9752-21ssh09:45:152
2492299332,21cyclictest15854-21ssh12:30:161
2492299331,25cyclictest30215-21ssh12:20:161
24930993219,10cyclictest6652-21sh10:55:122
2491299321,21cyclictest5890-21ssh09:25:140
2493999315,14cyclictest0-21swapper/309:25:143
2493999312,13cyclictest35966irq/58-eth010:30:153
2493099316,10cyclictest19876-21ssh09:30:342
2493099313,5cyclictest131rcu_preempt08:25:142
2493099313,19cyclictest27346irq/40-dwc2_hso10:45:142
2493099313,18cyclictest27346irq/40-dwc2_hso08:05:172
2493099312,16cyclictest17352-21diskmemload10:25:152
2493099312,16cyclictest17352-21diskmemload10:25:142
24930993116,11cyclictest0-21swapper/211:10:192
2491299313,24cyclictest21118-21ssh12:15:130
2493099304,19cyclictest0-21swapper/211:50:162
2492299302,22cyclictest19302-21rm10:43:261
24912993018,9cyclictest14175-21ssh11:35:140
2491299301,25cyclictest10491-21ssh11:15:130
2493999291,18cyclictest35966irq/58-eth008:00:133
2493099293,20cyclictest0-21swapper/210:00:162
2493099292,11cyclictest10238-21ssh10:38:262
2492299293,22cyclictest27885-21ssh09:55:151
2493999283,19cyclictest35966irq/58-eth012:10:153
2493999283,19cyclictest35966irq/58-eth012:10:143
2493099283,17cyclictest27346irq/40-dwc2_hso07:30:142
2493099283,14cyclictest12194-21ssh12:10:162
2493099283,14cyclictest12194-21ssh12:10:152
2493099282,21cyclictest19528-21apt-get11:20:132
2493099282,20cyclictest1215-21ssh10:33:262
2493099282,20cyclictest0-21swapper/210:50:182
2492299284,14cyclictest28558-21ssh11:25:111
24922992816,9cyclictest23181-21sh11:40:161
24912992822,3cyclictest0-21swapper/008:10:140
2491299282,19cyclictest30133-21ssh10:50:170
2493999276,17cyclictest35966irq/58-eth009:35:133
24939992715,7cyclictest35966irq/58-eth009:50:143
2493099273,17cyclictest27346irq/40-dwc2_hso08:30:142
2493099272,20cyclictest0-21swapper/207:20:142
2493099271,15cyclictest28308-21ssh11:05:242
2493099271,15cyclictest28308-21ssh11:05:242
2492299272,19cyclictest32180-21ssh09:39:261
2493999264,18cyclictest35966irq/58-eth012:35:163
2493999264,15cyclictest0-21swapper/309:15:133
2493999263,10cyclictest0-21swapper/310:13:263
2493999262,15cyclictest0-21swapper/311:35:143
2493099263,14cyclictest27346irq/40-dwc2_hso08:20:142
2493099262,9cyclictest4198-21ssh10:15:412
2493099262,18cyclictest27346irq/40-dwc2_hso08:40:142
2493099261,15cyclictest31227-21cut07:50:162
24930992610,7cyclictest27-21ksoftirqd/209:40:132
2492299263,17cyclictest26637-21ssh12:00:141
24922992611,8cyclictest21-21ksoftirqd/108:35:141
24922992611,8cyclictest21-21ksoftirqd/108:35:141
24939992511,10cyclictest35966irq/58-eth010:50:173
2493099254,12cyclictest131rcu_preempt08:00:162
2493099253,18cyclictest27346irq/40-dwc2_hso10:10:152
2493099251,9cyclictest1008966ssh10:20:222
24930992513,9cyclictest28068-21fschecks_time09:55:182
2493099251,14cyclictest1365-21grep09:00:172
2493099251,14cyclictest1365-21grep09:00:172
2492299251,3cyclictest131rcu_preempt11:20:131
2492299250,16cyclictest6653-21rm10:55:121
2491299251,21cyclictest32115-21ssh11:45:130
24912992510,5cyclictest131rcu_preempt07:55:140
24939992414,7cyclictest0-21swapper/311:50:153
2493099247,8cyclictest2802-21cron12:05:012
2493099243,7cyclictest6172-21idleruntime09:25:172
2493099241,9cyclictest21104-21ssh12:15:122
24930992413,4cyclictest20101-21ssh09:15:132
24930992412,9cyclictest0-21swapper/207:40:182
2493099241,19cyclictest18327-21kthreadcore12:30:242
2493099241,16cyclictest27346irq/40-dwc2_hso08:15:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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