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2026-04-15 - 14:51

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 Apr 15, 2026 12:45:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18763997132,26cyclictest35966irq/58-eth012:15:143
18728996021,9cyclictest12-21ksoftirqd/011:45:120
1875399564,38cyclictest25656-21ssh11:45:112
1874499513,38cyclictest20183-21ssh10:30:121
1874499513,38cyclictest20183-21ssh10:30:121
1874499504,34cyclictest21737-21ssh09:55:141
1874499504,34cyclictest21737-21ssh09:55:131
1872899467,36cyclictest11275-21ssh11:55:130
1872899467,36cyclictest11275-21ssh11:55:130
18763994231,8cyclictest35966irq/58-eth012:30:113
1875399423,19cyclictest31146-21ssh11:30:112
18753994221,17cyclictest27346irq/40-dwc2_hso09:20:102
18728994128,6cyclictest4754-21diskmemload11:35:130
1872899412,32cyclictest5956-21ssh10:40:150
18753993923,6cyclictest27-21ksoftirqd/210:15:112
1875399392,29cyclictest4736-21cat12:25:302
1876399381,21cyclictest35966irq/58-eth012:10:113
18763993811,17cyclictest35966irq/58-eth010:15:123
1876399376,22cyclictest35966irq/58-eth010:20:103
1876399374,21cyclictest35966irq/58-eth010:35:133
18753993721,10cyclictest29340-1kworker/u9:110:03:292
18753993710,14cyclictest2047-21ssh10:20:112
18763993619,10cyclictest35966irq/58-eth009:10:123
1875399362,28cyclictest18611-21ssh10:28:382
1876399351,4cyclictest0-21swapper/308:35:103
1876399351,30cyclictest35966irq/58-eth009:35:123
1875399353,23cyclictest32303-21ssh09:25:132
18753993516,12cyclictest0-21swapper/211:20:112
1872899358,21cyclictest12-21ksoftirqd/008:25:140
1872899351,23cyclictest27048-21ssh09:40:110
1876399343,22cyclictest35966irq/58-eth010:00:123
1876399343,10cyclictest35966irq/58-eth009:45:123
1874499345,17cyclictest27484-21ssh11:10:141
1874499345,17cyclictest27484-21ssh11:10:131
1872899342,25cyclictest4032-21ssh11:15:110
1876399337,22cyclictest0-21swapper/310:30:133
1876399337,22cyclictest0-21swapper/310:30:123
1876399333,17cyclictest35966irq/58-eth010:45:133
1876399332,21cyclictest35966irq/58-eth012:25:133
1875399333,23cyclictest14174-21ssh09:15:142
1875399326,13cyclictest27346irq/40-dwc2_hso07:50:132
1875399326,13cyclictest27346irq/40-dwc2_hso07:50:122
18763993115,9cyclictest0-21swapper/310:25:133
1875399312,18cyclictest27346irq/40-dwc2_hso07:15:112
1874499311,28cyclictest0-21swapper/107:30:111
1874499311,28cyclictest0-21swapper/107:30:101
1872899314,20cyclictest12-21ksoftirqd/009:35:130
1872899313,18cyclictest8946-21ssh09:30:110
1872899312,23cyclictest3401-21ssh10:37:290
1872899311,3cyclictest131rcu_preempt07:10:130
1876399303,3cyclictest0-21swapper/311:00:183
1875399305,16cyclictest27346irq/40-dwc2_hso11:15:122
1875399303,16cyclictest27346irq/40-dwc2_hso09:00:122
1876399293,12cyclictest35966irq/58-eth009:15:123
1876399291,3cyclictest0-21swapper/311:30:133
1875399293,17cyclictest27-21ksoftirqd/211:00:142
1875399292,21cyclictest22138-21unixbench_singl09:35:272
1875399292,11cyclictest15078-21ssh12:31:302
18753992912,9cyclictest27-21ksoftirqd/207:55:132
1874499293,19cyclictest27058-21ssh09:40:131
1874499292,20cyclictest9392-21ssh12:30:121
1872899292,21cyclictest2578-21usage_Anybus10:00:290
1872899291,21cyclictest2057-21ssh10:20:110
1876399281,4cyclictest0-21swapper/309:58:293
1876399281,4cyclictest0-21swapper/309:58:283
1876399281,15cyclictest35966irq/58-eth007:30:113
1876399281,15cyclictest35966irq/58-eth007:30:103
18753992812,9cyclictest0-21swapper/208:00:132
1874499282,23cyclictest32304-21ssh09:25:121
1874499282,18cyclictest13453-21cat09:30:291
1874499281,22cyclictest0-21swapper/108:55:131
1874499281,12cyclictest3653-21ssh09:45:131
18728992812,11cyclictest151rcuc/011:00:150
1876399271,9cyclictest0-21swapper/311:35:213
1875399273,18cyclictest0-21swapper/210:37:302
1875399272,17cyclictest0-21swapper/212:35:132
1875399272,15cyclictest14924-21sh10:45:162
1875399272,10cyclictest0-21swapper/211:25:142
1875399272,10cyclictest0-21swapper/208:50:132
1875399272,10cyclictest0-21swapper/208:50:122
1874499272,21cyclictest12667-21ssh09:50:141
1874499271,22cyclictest18518-21ssh11:05:131
1872899272,21cyclictest23968-21ssh10:50:140
1876399263,16cyclictest0-21swapper/312:38:373
18763992618,5cyclictest35966irq/58-eth010:40:143
1876399261,4cyclictest0-21swapper/309:50:133
1876399261,4cyclictest0-21swapper/307:15:113
1876399261,16cyclictest35966irq/58-eth011:15:103
1876399261,10cyclictest0-21swapper/311:05:213
1875399266,13cyclictest27-21ksoftirqd/207:25:112
1875399264,16cyclictest27346irq/40-dwc2_hso08:55:122
1875399263,17cyclictest27346irq/40-dwc2_hso07:45:152
1875399263,15cyclictest27346irq/40-dwc2_hso08:05:122
18753992615,2cyclictest0-21swapper/211:05:112
1875399261,14cyclictest16797-21ssh11:40:152
1874499264,18cyclictest454-21ssh10:55:131
1874499263,19cyclictest18351-21ssh12:35:141
1874499262,19cyclictest16722-21ssh11:40:161
1874499262,18cyclictest25379-21sh10:15:131
1874499261,20cyclictest14155-21apt-get09:15:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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