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2026-06-03 - 12:54

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 03, 2026 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1305699640,34cyclictest17849-21ssh21:10:141
1305699640,34cyclictest17849-21ssh21:10:131
13077996338,14cyclictest35966irq/58-eth021:10:133
13077996338,14cyclictest35966irq/58-eth021:10:133
1306799604,15cyclictest131rcu_preempt21:05:132
1306799583,35cyclictest25169-21ssh21:50:132
1305699566,33cyclictest3357-21ssh00:20:161
1306799552,34cyclictest18158-21ssh22:40:122
1306799551,39cyclictest30787-21ssh23:05:162
1305699542,38cyclictest7198-21ssh21:40:131
1305699513,39cyclictest26855-21ssh21:15:141
1305699513,39cyclictest26855-21ssh21:15:131
1306799485,19cyclictest27-21ksoftirqd/200:00:142
1306799481,31cyclictest26784-21ssh00:15:142
1307799463,36cyclictest0-21swapper/322:30:133
1305699454,4cyclictest0-21swapper/123:45:121
1307799447,24cyclictest35966irq/58-eth000:25:153
1307799436,22cyclictest35966irq/58-eth023:10:133
1304899430,34cyclictest23344-21ssh23:55:120
13077994222,10cyclictest35966irq/58-eth023:30:133
1306799418,27cyclictest27-21ksoftirqd/200:30:152
1306799404,16cyclictest261rcuc/220:55:122
1306799402,16cyclictest32567-21ssh22:30:132
1305699404,26cyclictest19815-21ssh23:35:121
1307799383,21cyclictest35966irq/58-eth021:40:133
1305699386,20cyclictest21-21ksoftirqd/120:50:121
13077993721,11cyclictest0-21swapper/323:20:133
1305699371,29cyclictest9126-21ssh22:35:121
1306799361,30cyclictest7286-21ssh23:10:112
1305699351,27cyclictest17440-21diskmemload22:10:141
13077993419,10cyclictest35966irq/58-eth021:20:143
13077993419,10cyclictest35966irq/58-eth021:20:143
13056993420,8cyclictest0-21swapper/122:25:121
1306799335,22cyclictest0-21swapper/221:55:122
1306799335,17cyclictest27-21ksoftirqd/221:00:142
1306799331,25cyclictest19830-21ssh23:35:132
1306799331,14cyclictest3822-21ssh22:50:132
1304899334,5cyclictest131rcu_preempt19:50:120
1306799322,14cyclictest27106-21ssh22:08:282
1306799313,23cyclictest261rcuc/223:45:122
13056993124,4cyclictest0-21swapper/119:40:081
13056993120,7cyclictest0-21swapper/100:30:141
13048993127,2cyclictest0-21swapper/000:35:130
1307799302,21cyclictest0-21swapper/321:55:123
1307799302,16cyclictest35966irq/58-eth000:05:173
1307799302,12cyclictest35966irq/58-eth000:10:143
13077993016,9cyclictest0-21swapper/322:50:133
13077993010,15cyclictest0-21swapper/322:55:143
1306799308,11cyclictest27-21ksoftirqd/200:35:142
1306799302,22cyclictest27238-21ssh22:45:142
1305699304,18cyclictest17440-21diskmemload21:30:211
1304899302,20cyclictest10968-21ssh23:10:250
1307799293,19cyclictest35966irq/58-eth022:35:133
13077992920,4cyclictest0-21swapper/320:25:113
1306799294,16cyclictest27346irq/40-dwc2_hso20:25:122
1306799292,21cyclictest0-21swapper/220:30:152
1305699294,16cyclictest21-21ksoftirqd/122:15:111
13048992922,4cyclictest14437-21sh23:50:150
13077992816,9cyclictest0-21swapper/322:45:133
1306799283,6cyclictest930-21snmpd20:35:132
1306799283,18cyclictest27346irq/40-dwc2_hso20:05:152
1306799282,19cyclictest0-21swapper/219:40:102
1306799282,18cyclictest27346irq/40-dwc2_hso21:40:112
13067992811,14cyclictest5666-21/usr/sbin/munin22:15:172
13048992821,4cyclictest12-21ksoftirqd/021:00:140
1307799275,14cyclictest0-21swapper/323:35:133
1306799273,20cyclictest27346irq/40-dwc2_hso21:15:152
1306799273,20cyclictest27346irq/40-dwc2_hso21:15:152
1306799272,15cyclictest3445-21ssh21:20:142
1306799272,15cyclictest3445-21ssh21:20:142
1305699272,19cyclictest16279-21ssh23:15:131
1305699271,20cyclictest12835-21ssh22:55:141
1304899273,19cyclictest28885-21ssh23:40:140
1307799267,12cyclictest35966irq/58-eth022:05:153
13077992620,2cyclictest0-21swapper/319:50:103
13077992618,5cyclictest0-21swapper/300:15:153
13077992616,6cyclictest0-21swapper/319:40:093
13077992614,5cyclictest0-21swapper/300:35:133
1307799261,17cyclictest35966irq/58-eth000:30:133
1307799261,16cyclictest35966irq/58-eth021:45:143
1306799264,12cyclictest27-21ksoftirqd/219:55:122
1306799263,16cyclictest27346irq/40-dwc2_hso20:10:132
1306799262,16cyclictest27346irq/40-dwc2_hso21:25:142
1305699263,16cyclictest0-21swapper/120:20:141
1305699263,16cyclictest0-21swapper/120:20:141
1305699262,17cyclictest25147-21/usr/sbin/munin21:50:281
1304899262,21cyclictest1682-21ssh21:55:120
1304899262,19cyclictest2151-21ssh22:48:290
1307799253,13cyclictest35966irq/58-eth022:40:113
13077992519,3cyclictest0-21swapper/323:55:133
13077992519,3cyclictest0-21swapper/319:45:123
13077992518,5cyclictest0-21swapper/321:15:153
13077992518,5cyclictest0-21swapper/321:15:153
1306799251,9cyclictest17312-21ssh22:02:342
1306799251,20cyclictest30684-21uniq21:35:162
1306799251,19cyclictest19305-21ssh23:50:342
1305699252,17cyclictest30522-21ssh21:35:131
1307799243,14cyclictest0-21swapper/321:50:283
13077992418,3cyclictest0-21swapper/323:00:133
13077992418,3cyclictest0-21swapper/319:10:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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