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2026-03-21 - 23:03

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 Mar 21, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
375399742,30cyclictest24199-21ssh10:05:132
374299561,46cyclictest16887-21ssh12:25:121
3742995327,14cyclictest131rcu_preempt09:55:161
375399511,27cyclictest2312-21ssh09:35:122
374299494,11cyclictest131rcu_preempt12:35:121
3765994825,18cyclictest28366irq/58-eth011:40:123
375399484,16cyclictest22346irq/40-dwc2_hso08:40:122
375399482,27cyclictest31062-21ssh09:15:132
374299483,37cyclictest22212-21ssh12:10:141
374299451,32cyclictest7651-21ssh09:20:111
374299448,7cyclictest21-21ksoftirqd/109:15:131
373399443,16cyclictest0-21swapper/008:45:130
375399439,22cyclictest633-21Async12:11:532
374299423,31cyclictest4206-21sh12:00:121
374299422,7cyclictest131rcu_preempt10:20:131
375399413,19cyclictest22448-21ssh10:40:132
3753994114,13cyclictest633-21Async12:11:532
374299417,23cyclictest21-21ksoftirqd/108:25:131
374299416,25cyclictest21-21ksoftirqd/109:50:121
374299414,25cyclictest11701-21ssh11:10:131
376599405,22cyclictest28366irq/58-eth011:15:143
373399402,27cyclictest16687-21rm09:25:130
3733993926,10cyclictest21672-21diskmemload12:15:100
3733993926,10cyclictest21672-21diskmemload12:15:100
376599382,23cyclictest28366irq/58-eth011:50:143
3765993811,23cyclictest28366irq/58-eth011:05:133
375399385,22cyclictest24334-21ssh11:35:132
373399381,31cyclictest9766-21ssh10:15:130
3742993626,7cyclictest21-21ksoftirqd/107:50:131
3733993613,19cyclictest12-21ksoftirqd/012:30:140
375399352,28cyclictest20337-21ssh10:37:562
375399351,15cyclictest924-21snmpd08:45:142
376599342,18cyclictest28366irq/58-eth010:30:133
376599342,18cyclictest28366irq/58-eth010:30:123
3753993411,20cyclictest27-21ksoftirqd/207:45:112
374299345,6cyclictest131rcu_preempt08:55:121
374299340,27cyclictest0-21swapper/111:00:131
376599331,20cyclictest28366irq/58-eth010:05:133
375399334,13cyclictest15205-21ssh10:00:142
375399331,21cyclictest9767-21ssh11:45:132
375399331,21cyclictest9767-21ssh11:45:122
374299334,7cyclictest131rcu_preempt11:17:561
374299332,20cyclictest21-21ksoftirqd/111:25:141
375399324,9cyclictest633-21Async12:11:532
3753993217,9cyclictest22346irq/40-dwc2_hso09:40:112
3753993216,8cyclictest25759-21ssh09:30:132
375399321,15cyclictest978166ssh10:15:132
375399313,14cyclictest8710-21sshd07:15:142
374299314,19cyclictest27897-21diskmemload10:25:151
374299311,18cyclictest29848-21ssh11:20:111
373399317,18cyclictest13192-21diskmemload12:05:120
373399313,19cyclictest31371-21ssh10:45:110
373399312,23cyclictest10058-21ssh12:38:540
3733993112,15cyclictest12-21ksoftirqd/011:15:120
375399302,20cyclictest22346irq/40-dwc2_hso07:55:132
374299306,9cyclictest131rcu_preempt09:45:141
373399302,22cyclictest11878-21rm12:03:550
375399293,15cyclictest22346irq/40-dwc2_hso12:35:122
375399292,20cyclictest0-21swapper/210:20:142
374299291,24cyclictest2651-21ssh11:05:141
374299291,19cyclictest4389-21ssh10:30:131
374299291,19cyclictest4389-21ssh10:30:121
373399294,19cyclictest27543-21ssh11:55:120
375399284,16cyclictest22346irq/40-dwc2_hso07:25:122
375399283,18cyclictest22346irq/40-dwc2_hso08:30:112
375399283,18cyclictest22346irq/40-dwc2_hso08:30:102
375399282,11cyclictest9296-21ssh11:44:552
374299282,20cyclictest25883-21ssh12:30:161
373399285,4cyclictest131rcu_preempt10:35:110
3733992815,6cyclictest0-21swapper/011:21:500
376599272,15cyclictest28366irq/58-eth009:15:123
375399273,8cyclictest0-21swapper/211:15:552
375399272,20cyclictest924-21snmpd11:01:552
375399272,16cyclictest21672-21diskmemload11:30:132
375399272,10cyclictest0-21swapper/207:35:112
375399271,21cyclictest0-21swapper/210:45:122
375399271,16cyclictest7998-21ssh10:50:152
374299273,15cyclictest16998-21rm10:55:151
373399277,11cyclictest12-21ksoftirqd/010:25:040
3733992712,10cyclictest7617-21/usr/sbin/munin09:20:280
376599263,17cyclictest0-21swapper/310:54:553
376599263,15cyclictest0-21swapper/310:37:553
376599262,17cyclictest0-21swapper/311:13:553
375399264,14cyclictest22346irq/40-dwc2_hso07:10:132
375399261,9cyclictest924-21snmpd12:05:112
373399263,19cyclictest22071-21ssh09:10:140
373399263,13cyclictest21672-21diskmemload09:55:140
3733992614,5cyclictest0-21swapper/010:00:140
3733992613,8cyclictest0-21swapper/008:20:120
376599255,11cyclictest0-21swapper/312:10:153
376599252,16cyclictest0-21swapper/309:40:123
375399253,14cyclictest22346irq/40-dwc2_hso11:55:122
375399252,9cyclictest0-21swapper/208:20:142
375399252,20cyclictest0-21swapper/209:10:132
374299257,11cyclictest21-21ksoftirqd/111:50:131
373399252,16cyclictest22453-21ssh10:40:130
376599243,12cyclictest28366irq/58-eth011:20:123
3765992415,6cyclictest28366irq/58-eth009:50:123
374299243,2cyclictest131rcu_preempt11:30:281
374299242,17cyclictest24379-21apt-get08:05:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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