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2026-07-23 - 00:18

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 Jul 22, 2026 12:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32654995536,15cyclictest35966irq/58-eth011:05:133
3265499474,29cyclictest35966irq/58-eth009:25:153
32654994614,21cyclictest35966irq/58-eth009:45:133
3263799450,37cyclictest22917-21ssh09:30:131
32646994336,2cyclictest261rcuc/211:20:122
3263799432,36cyclictest15260-21ssh12:25:121
32629994222,13cyclictest131rcu_preempt08:05:130
3265499413,24cyclictest35966irq/58-eth007:30:123
3262999404,33cyclictest26657-21ssh09:50:110
3262999392,32cyclictest6300-21ssh12:20:120
3262999392,30cyclictest12489-21sh10:00:140
3265499383,23cyclictest35966irq/58-eth010:05:133
3265499382,20cyclictest35966irq/58-eth009:55:153
32654993817,10cyclictest35966irq/58-eth011:55:143
3264699383,29cyclictest0-21swapper/212:20:122
3262999383,6cyclictest131rcu_preempt11:20:120
32646993732,3cyclictest27-21ksoftirqd/207:30:122
32646993614,18cyclictest0-21swapper/207:15:132
32646993614,18cyclictest0-21swapper/207:15:132
3263799361,27cyclictest0-21swapper/112:35:131
32654993523,8cyclictest35966irq/58-eth011:45:123
3264699352,24cyclictest27-21ksoftirqd/208:40:122
3265499344,16cyclictest35966irq/58-eth009:50:113
3262999343,25cyclictest31430-21ssh11:40:120
32629993418,13cyclictest12-21ksoftirqd/012:00:150
3265499332,24cyclictest35966irq/58-eth010:35:143
3264699332,23cyclictest19075-21ssh09:10:122
3262999332,22cyclictest30537-21ssh10:10:120
32629993310,16cyclictest12-21ksoftirqd/007:55:170
3265499323,15cyclictest35966irq/58-eth012:35:133
3265499322,19cyclictest35966irq/58-eth010:10:133
32646993226,4cyclictest9329-21ssh10:33:262
32646993226,2cyclictest0-21swapper/212:05:152
3262999323,22cyclictest29724-21ssh12:15:150
32629993223,6cyclictest4825-21ssh09:20:150
32629993218,6cyclictest12-21ksoftirqd/007:30:130
3264699313,18cyclictest27346irq/40-dwc2_hso08:15:132
3263799312,22cyclictest5827-21ssh10:50:141
32629993113,15cyclictest12-21ksoftirqd/010:15:130
32654993015,10cyclictest321rcuc/309:10:113
3264699303,17cyclictest27346irq/40-dwc2_hso10:45:122
3264699302,20cyclictest27346irq/40-dwc2_hso09:50:112
3263799304,15cyclictest20714-21ssh12:10:131
3263799303,20cyclictest17084-21ssh11:50:151
3263799302,22cyclictest12119-21sh09:23:261
32629993022,5cyclictest0-21swapper/010:35:140
3262999302,23cyclictest26238-21ssh11:55:150
32629993016,11cyclictest12-21ksoftirqd/010:45:120
3265499294,17cyclictest35966irq/58-eth009:20:143
3265499292,17cyclictest35966irq/58-eth011:40:133
3264699293,18cyclictest27346irq/40-dwc2_hso11:00:142
3264699292,22cyclictest0-21swapper/208:00:152
3264699292,11cyclictest26223-21ssh11:55:142
3264699291,11cyclictest94166ssh12:15:272
3262999291,23cyclictest25371-21ssh10:25:150
3265499283,16cyclictest0-21swapper/311:53:263
32654992813,9cyclictest35966irq/58-eth011:30:133
3264699282,11cyclictest26645-21ntp_states09:30:262
3263799282,20cyclictest17454-21rm11:14:001
3262999282,20cyclictest16269-21ssh10:20:140
3265499271,15cyclictest35966irq/58-eth010:15:133
3264699273,15cyclictest27346irq/40-dwc2_hso11:30:122
3264699272,18cyclictest12492-21ssh10:00:152
3264699272,11cyclictest0-21swapper/208:05:142
3264699271,9cyclictest1461166ssh10:35:232
3264699271,20cyclictest0-21swapper/207:25:142
3263799272,18cyclictest14923-21ssh10:55:131
3263799272,17cyclictest7175-21ssh10:15:141
32637992710,12cyclictest21-21ksoftirqd/110:43:261
3262999275,17cyclictest13389-21ssh11:30:130
3262999272,22cyclictest4001-21/usr/sbin/munin07:10:260
3262999271,21cyclictest11743-21ssh12:05:150
3262999271,20cyclictest863-21rm12:35:130
3265499267,12cyclictest35966irq/58-eth009:40:133
3265499263,15cyclictest0-21swapper/310:40:263
3264699263,20cyclictest15486-21kthreadcore09:05:212
3264699263,15cyclictest27346irq/40-dwc2_hso08:30:132
3264699262,18cyclictest27346irq/40-dwc2_hso08:55:142
3265499253,16cyclictest35966irq/58-eth012:05:153
3265499252,17cyclictest0-21swapper/310:23:263
3265499251,15cyclictest0-21swapper/310:00:143
3264699252,16cyclictest29522-21unixbench_singl10:25:302
3264699252,15cyclictest27346irq/40-dwc2_hso08:50:112
3264699252,12cyclictest7155-21ssh10:15:132
3264699251,3cyclictest13901-21ssh09:25:162
3264699251,17cyclictest16997-21kthreadcore10:20:192
3264699251,16cyclictest12140-21grep11:45:302
3263799253,14cyclictest18682-21diskmemload09:45:121
3262999253,15cyclictest0-21swapper/009:25:160
3262999252,17cyclictest30477-21rm09:33:410
32629992511,4cyclictest12-21ksoftirqd/008:45:020
3265499247,11cyclictest0-21swapper/310:33:263
3264699244,14cyclictest862-21diskmemload12:35:132
3264699243,18cyclictest3293-21ntp_kernel_pll_09:35:272
3264699243,13cyclictest25894-21/usr/sbin/munin08:10:172
3264699242,7cyclictest0-21swapper/209:40:262
3264699242,13cyclictest6246-21kthreadcore08:20:222
3264699242,13cyclictest4538-21fschecks_count11:25:162
3264699242,13cyclictest29888-21kthreadcore08:45:222
32646992412,9cyclictest0-21swapper/207:55:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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