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2026-07-28 - 03:07

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 Tue Jul 28, 2026 00:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2239499594,43cyclictest30210-21ssh23:45:130
2239499562,43cyclictest8121-21ssh23:15:140
2240899558,6cyclictest131rcu_preempt00:25:131
22394995132,9cyclictest12-21ksoftirqd/021:10:130
22394995132,9cyclictest12-21ksoftirqd/021:10:130
2240899502,38cyclictest13351-21ssh23:00:141
2240899501,37cyclictest7072-21ssh21:45:121
2242899464,27cyclictest35966irq/58-eth000:20:143
2242899451,27cyclictest35966irq/58-eth023:15:133
2239499441,32cyclictest23946-21rm22:30:140
2239499435,30cyclictest27628-21ssh22:50:120
22428994131,7cyclictest0-21swapper/321:45:123
2242899401,22cyclictest35966irq/58-eth021:10:133
2242899401,22cyclictest35966irq/58-eth021:10:133
2239499407,18cyclictest5498-21ssh00:25:130
2239499402,23cyclictest26596-21ssh21:20:140
2241799391,28cyclictest930-21snmpd22:40:132
2241799391,28cyclictest930-21snmpd22:40:132
2239499393,31cyclictest1905-21ssh22:00:130
2242899384,24cyclictest35966irq/58-eth022:35:133
2242899381,21cyclictest35966irq/58-eth021:40:123
2242899381,21cyclictest35966irq/58-eth021:40:123
2241799383,21cyclictest5492-21ssh00:25:132
22408993823,7cyclictest7940-21diskmemload00:20:131
22408993812,19cyclictest21-21ksoftirqd/120:50:131
2240899367,19cyclictest21-21ksoftirqd/120:30:131
2240899362,27cyclictest569-21ssh22:35:141
2242899357,16cyclictest35966irq/58-eth019:40:133
2241799353,25cyclictest0-21swapper/200:22:462
2241799350,31cyclictest0-21swapper/223:05:142
2239499352,27cyclictest17206-21ssh23:20:120
22394993414,12cyclictest0-21swapper/022:20:120
2239499331,20cyclictest19729-21ssh00:15:130
2239499331,20cyclictest19729-21ssh00:15:130
2239499322,21cyclictest31485-21ssh23:10:150
22394993219,6cyclictest0-21swapper/021:40:120
22394993219,6cyclictest0-21swapper/021:40:120
2242899312,19cyclictest35966irq/58-eth022:10:123
2239499312,21cyclictest14946-21ssh22:25:150
22394993112,12cyclictest12-21ksoftirqd/019:30:140
2242899301,21cyclictest35966irq/58-eth021:00:143
2242899301,16cyclictest35966irq/58-eth021:05:143
2241799304,15cyclictest27346irq/40-dwc2_hso21:35:132
22417993018,6cyclictest2496146ssh00:00:132
2240899302,23cyclictest16124-21ssh21:50:141
22408993021,6cyclictest26430-21ssh23:25:151
22408993021,6cyclictest26430-21ssh23:25:151
2239499302,22cyclictest4886-21ssh00:24:460
2241799295,14cyclictest27346irq/40-dwc2_hso20:40:122
2241799293,16cyclictest27346irq/40-dwc2_hso19:40:152
2239499292,20cyclictest30397-21ssh00:37:450
2239499292,20cyclictest13176-21ssh22:40:250
2239499292,20cyclictest13176-21ssh22:40:250
2242899286,14cyclictest35966irq/58-eth021:50:133
2241799284,17cyclictest3038-21ssh23:30:152
2241799283,15cyclictest11003-21ssh22:05:132
2241799282,21cyclictest20961-21ssh23:55:462
2241799282,21cyclictest15260-21ssh23:54:462
2241799282,20cyclictest0-21swapper/223:40:142
22417992812,7cyclictest27-21ksoftirqd/220:30:122
2240899286,4cyclictest131rcu_preempt23:20:131
2239499284,17cyclictest6813-21ssh23:50:140
2239499283,18cyclictest22418-21ssh23:05:140
2239499282,20cyclictest25227-21ssh21:55:160
22394992814,8cyclictest22384-21cyclictest19:25:130
2241799275,15cyclictest27346irq/40-dwc2_hso23:25:152
2241799275,15cyclictest27346irq/40-dwc2_hso23:25:152
2241799274,16cyclictest27346irq/40-dwc2_hso23:35:152
2241799273,15cyclictest27346irq/40-dwc2_hso00:15:112
2241799273,15cyclictest27346irq/40-dwc2_hso00:15:112
2241799273,10cyclictest27-21ksoftirqd/222:10:132
2241799272,17cyclictest930-21snmpd23:45:152
2241799271,11cyclictest17435-21ssh00:12:462
22408992720,4cyclictest21-21ksoftirqd/121:20:131
22428992615,7cyclictest35966irq/58-eth022:45:143
2239499263,17cyclictest3197-21ssh21:25:140
22428992516,6cyclictest0-21swapper/322:55:143
2241799253,17cyclictest0-21swapper/200:06:462
22417992516,4cyclictest27-21ksoftirqd/222:49:072
22417992513,9cyclictest0-21swapper/220:45:132
22417992512,5cyclictest0-21swapper/219:45:282
2241799251,15cyclictest8363-21ssh21:10:142
2241799251,15cyclictest8363-21ssh21:10:142
2240899254,9cyclictest21-21ksoftirqd/122:20:121
22408992510,6cyclictest131rcu_preempt21:17:551
2239499255,13cyclictest0-21swapper/020:20:140
2239499251,18cyclictest20096-21ssh22:10:130
2241799245,12cyclictest27346irq/40-dwc2_hso23:10:142
2241799242,6cyclictest0-21swapper/200:38:462
22417992414,5cyclictest27-21ksoftirqd/222:34:062
2241799241,13cyclictest29178-21ssh22:15:132
22417992411,10cyclictest0-21swapper/219:30:282
2240899249,5cyclictest21-21ksoftirqd/121:25:201
22408992413,8cyclictest21-21ksoftirqd/120:35:131
2240899241,18cyclictest21368-21ssh21:35:141
22408992411,7cyclictest0-21swapper/123:36:441
22408992411,7cyclictest0-21swapper/122:09:071
22408992411,3cyclictest0-21swapper/122:49:071
2239499243,12cyclictest12-21ksoftirqd/019:45:130
2239499242,17cyclictest17459-21rm21:15:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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