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2026-05-21 - 18:00

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 May 21, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1244499521,38cyclictest639-21ssh11:35:151
12436995211,2cyclictest131rcu_preempt12:20:140
1244499481,32cyclictest27590-21ssh11:50:121
12444994810,4cyclictest131rcu_preempt09:00:111
12459994537,4cyclictest35966irq/58-eth011:45:133
1243699455,5cyclictest131rcu_preempt12:35:110
1243699454,36cyclictest2148-21ssh09:30:130
1245299401,32cyclictest20224-21ssh11:10:132
1243699401,32cyclictest27565-21ssh11:50:110
12459993833,3cyclictest35966irq/58-eth012:00:123
12452993830,6cyclictest30627-21diskmemload09:25:112
1245299370,25cyclictest14718-21ssh09:55:102
1244499372,26cyclictest400-21ssh10:05:141
1243699372,31cyclictest12947-21ssh10:30:130
12459993530,3cyclictest35966irq/58-eth009:50:133
1245299351,30cyclictest25594-21ssh10:55:112
1245299343,27cyclictest21989-21ssh10:35:122
1245299342,26cyclictest7589-21ssh09:15:142
1245299332,20cyclictest11216-21ssh11:05:122
12436993326,5cyclictest12451-21dpkg07:10:020
1244499324,21cyclictest13192-21ssh12:00:131
1245299314,20cyclictest27-21ksoftirqd/207:10:112
1245299314,13cyclictest27-21ksoftirqd/210:15:142
1245299313,25cyclictest9650-21ssh11:40:112
12452993112,4cyclictest7838-21ssh12:15:142
1245299311,24cyclictest2255-21ssh11:00:132
1243699312,23cyclictest9442-21ssh10:10:130
12436993113,10cyclictest0-21swapper/011:25:140
12436993113,10cyclictest0-21swapper/011:25:130
1245299309,15cyclictest27-21ksoftirqd/212:05:122
1245299303,19cyclictest27346irq/40-dwc2_hso08:00:112
1245299303,18cyclictest27346irq/40-dwc2_hso09:00:122
1245299302,20cyclictest30265-21ssh11:32:112
1245299301,20cyclictest27-21ksoftirqd/210:40:112
1244499307,15cyclictest131rcu_preempt09:20:111
12459992923,3cyclictest0-21swapper/311:25:133
12459992923,3cyclictest0-21swapper/311:25:123
12459992915,11cyclictest35966irq/58-eth012:15:143
1245299296,18cyclictest261rcuc/209:20:142
1245299294,20cyclictest25881-21ssh12:25:122
1245299293,17cyclictest27346irq/40-dwc2_hso08:50:132
1245299292,20cyclictest12081-21ssh11:22:102
1245299292,17cyclictest27523-21ssh10:00:282
12444992920,6cyclictest0-21swapper/107:10:011
1244499291,19cyclictest3980-21rm10:25:131
12436992913,2cyclictest12-21ksoftirqd/007:10:100
12459992816,9cyclictest321rcuc/310:45:123
1245299284,11cyclictest0-21swapper/212:00:122
1245299283,19cyclictest31042-21ssh09:10:152
1245299282,19cyclictest930-21snmpd08:15:162
1245299282,16cyclictest4202-21ssh11:55:142
12452992815,10cyclictest27-21ksoftirqd/209:35:122
1244499282,20cyclictest30669-21ssh10:55:471
1245999274,14cyclictest0-21swapper/311:00:123
1245999273,18cyclictest0-21swapper/312:05:113
1245299273,17cyclictest29377-21kworker/u8:010:10:102
1245299273,11cyclictest0-21swapper/210:30:102
1245299272,23cyclictest21651-21ssh10:50:462
1245299272,22cyclictest0-21swapper/208:45:152
1245299272,21cyclictest5756-21sh09:50:152
12452992716,8cyclictest0-21swapper/207:35:112
12452992711,12cyclictest32755-21missed_timers11:15:222
1245999261,17cyclictest0-21swapper/309:35:143
1245299262,10cyclictest14967-21ssh11:25:132
1245299262,10cyclictest14967-21ssh11:25:122
12452992612,11cyclictest25193-21ssh09:40:482
1244499262,19cyclictest31115-21ssh11:33:111
12444992616,7cyclictest29171-21ssh09:25:251
12444992610,11cyclictest21-21ksoftirqd/111:10:451
12459992511,9cyclictest35966irq/58-eth012:20:123
1245999251,13cyclictest35966irq/58-eth009:55:113
1245299254,18cyclictest0-21swapper/211:45:272
1245299254,13cyclictest27346irq/40-dwc2_hso08:35:132
1245299253,14cyclictest27346irq/40-dwc2_hso07:20:122
1245299252,20cyclictest0-21swapper/210:49:092
1245299251,20cyclictest436-21wc09:45:282
1244499251,18cyclictest73-21kswapd009:30:121
1243699251,19cyclictest0-21swapper/011:35:130
1245999243,18cyclictest0-21swapper/310:42:103
1245999242,17cyclictest35966irq/58-eth007:20:133
12459992412,8cyclictest35966irq/58-eth009:10:143
1245299248,11cyclictest27433-21sh10:20:152
1245299245,10cyclictest6596-21munin-run08:45:012
1245299244,10cyclictest9241-21idleruntime-cro11:40:022
1245299242,12cyclictest32468-21ssh11:50:302
1245299241,20cyclictest31773-21latency_hist07:30:022
1245299241,19cyclictest12105-21ssh12:35:182
1244499241,19cyclictest14975-21sh11:25:141
1244499241,19cyclictest14975-21sh11:25:141
1243699241,17cyclictest0-21swapper/010:05:130
12436992411,10cyclictest30158-21ssh12:25:300
1245999234,10cyclictest0-21swapper/310:20:163
1245999232,19cyclictest0-21swapper/310:36:113
1245999231,15cyclictest35966irq/58-eth010:00:133
1245299238,11cyclictest167-21systemd-network09:30:102
1245299236,4cyclictest11012-21ssh10:28:122
12452992313,8cyclictest0-21swapper/207:30:172
1245299231,12cyclictest589-21grep10:05:182
1245299231,11cyclictest4010-21kthreadcore12:30:212
1245299231,11cyclictest4010-21kthreadcore12:30:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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