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2026-04-16 - 06:25

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 Thu Apr 16, 2026 00:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3188999573,46cyclictest8802-21ssh22:35:121
3188999502,37cyclictest10461-21ssh23:30:121
31881994910,8cyclictest131rcu_preempt00:30:160
3188999472,37cyclictest22993-21ssh23:55:121
31881994727,8cyclictest131rcu_preempt19:10:120
3188999462,34cyclictest15897-21ssh21:45:131
31909994328,12cyclictest35966irq/58-eth022:05:123
3188199396,27cyclictest15821-21ssh23:15:120
3189799382,19cyclictest1816-21hwlatdetect21:55:162
3188199385,29cyclictest28415-21ssh23:40:120
3188199383,27cyclictest24907-21ssh21:50:110
3190999374,21cyclictest35966irq/58-eth019:10:133
3190999372,21cyclictest35966irq/58-eth020:35:133
3190999372,19cyclictest35966irq/58-eth023:15:133
31881993722,8cyclictest131rcu_preempt00:35:120
3190999367,18cyclictest35966irq/58-eth021:55:123
3190999363,23cyclictest35966irq/58-eth000:10:133
3190999361,21cyclictest35966irq/58-eth000:30:153
31889993610,18cyclictest30281-21ssh23:05:121
3190999346,17cyclictest35966irq/58-eth022:30:123
3190999346,17cyclictest35966irq/58-eth022:30:123
3190999341,20cyclictest35966irq/58-eth019:40:113
3189799342,24cyclictest24912-21ssh23:20:132
3189799341,11cyclictest880766ssh22:35:132
31881993426,6cyclictest14571-21ssh22:36:330
31881993310,17cyclictest12-21ksoftirqd/022:30:140
31881993310,17cyclictest12-21ksoftirqd/022:30:140
3190999324,18cyclictest35966irq/58-eth023:20:143
3190999322,20cyclictest35966irq/58-eth020:10:123
3190999322,16cyclictest35966irq/58-eth023:40:113
3189799323,17cyclictest27346irq/40-dwc2_hso19:55:132
31897993213,4cyclictest27-21ksoftirqd/200:30:152
3188199329,13cyclictest12-21ksoftirqd/022:00:130
31881993216,11cyclictest12382-21ssh21:25:130
31881993210,11cyclictest12-21ksoftirqd/021:35:140
31881993210,11cyclictest12-21ksoftirqd/021:35:130
31897993123,5cyclictest30335-21ssh00:35:132
31897993121,2cyclictest27346irq/40-dwc2_hso21:20:122
3188999313,18cyclictest844-21munin-node19:15:121
31889993122,3cyclictest0-21swapper/121:20:121
3188199316,22cyclictest12-21ksoftirqd/022:45:130
3188199315,18cyclictest12-21ksoftirqd/022:50:110
3188199314,20cyclictest23009-21ssh23:55:130
3190999303,9cyclictest0-21swapper/320:20:123
3190999303,19cyclictest35966irq/58-eth021:00:143
3190999303,17cyclictest35966irq/58-eth022:20:113
3189799302,22cyclictest3307-21ssh00:20:132
3189799302,21cyclictest0-21swapper/220:35:132
3188199301,23cyclictest0-21swapper/020:15:130
3188199300,23cyclictest0-21swapper/023:45:110
3190999292,17cyclictest35966irq/58-eth000:00:123
3190999292,17cyclictest35966irq/58-eth000:00:113
31909992914,8cyclictest0-21swapper/320:05:133
3189799293,18cyclictest27346irq/40-dwc2_hso19:20:122
3189799292,22cyclictest22485-21ssh22:24:342
3188999291,22cyclictest9793-21ssh21:59:331
3188199292,23cyclictest17858-21ssh22:40:110
3190999282,6cyclictest0-21swapper/320:00:113
3190999281,5cyclictest36066irq/59-eth021:20:123
3190999281,5cyclictest0-21swapper/321:50:113
3190999281,3cyclictest0-21swapper/300:05:143
3189799282,20cyclictest7060-21ssh00:03:342
3189799282,20cyclictest7060-21ssh00:03:342
3189799282,20cyclictest0-21swapper/219:30:132
3188999281,17cyclictest21319-21ssh23:00:151
3188999281,17cyclictest21319-21ssh23:00:141
3190999272,4cyclictest0-21swapper/322:55:023
3190999271,5cyclictest0-21swapper/322:55:513
3190999271,5cyclictest0-21swapper/321:45:123
3189799274,13cyclictest27346irq/40-dwc2_hso23:30:122
3189799273,5cyclictest0-21swapper/223:00:142
3189799273,5cyclictest0-21swapper/223:00:142
3189799272,18cyclictest27346irq/40-dwc2_hso23:35:112
3189799271,20cyclictest0-21swapper/219:35:142
3190999263,17cyclictest0-21swapper/300:38:343
3190999262,19cyclictest0-21swapper/319:35:123
3190999261,6cyclictest0-21swapper/323:25:233
3190999261,6cyclictest0-21swapper/321:15:213
3190999261,5cyclictest0-21swapper/323:48:103
3190999261,4cyclictest0-21swapper/323:55:023
3190999261,4cyclictest0-21swapper/320:30:133
3190999261,17cyclictest0-21swapper/321:25:133
3190999261,12cyclictest35966irq/58-eth021:10:133
3189799263,13cyclictest23242-21ssh22:25:112
3189799262,9cyclictest0-21swapper/220:20:142
31889992616,5cyclictest21-21ksoftirqd/119:20:121
3188199263,20cyclictest12293-21ssh00:25:130
3188199262,19cyclictest28702-21ssh22:10:130
3188199262,18cyclictest3353-21ssh21:20:150
3188199262,17cyclictest1558-21ssh21:55:130
3188199261,20cyclictest1562-21ssh23:25:120
3190999257,3cyclictest0-21swapper/323:04:053
3190999257,3cyclictest0-21swapper/323:04:053
3190999257,14cyclictest35966irq/58-eth000:20:133
3190999253,2cyclictest0-21swapper/322:35:263
3190999252,16cyclictest35966irq/58-eth022:00:123
3190999251,5cyclictest0-21swapper/322:10:223
3190999251,5cyclictest0-21swapper/319:30:173
3190999251,5cyclictest0-21swapper/300:15:243
3190999251,4cyclictest0-21swapper/300:00:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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