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2026-05-14 - 20:06

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 14, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7781996150,8cyclictest35966irq/58-eth012:30:113
777399566,32cyclictest25778-21ssh10:40:112
776499544,10cyclictest131rcu_preempt12:20:141
7773995243,5cyclictest27-21ksoftirqd/210:50:122
776499473,40cyclictest11240-21ssh10:50:121
775499464,35cyclictest4359-21ssh10:10:140
7773994524,13cyclictest27-21ksoftirqd/211:40:132
776499441,32cyclictest762-21ssh09:50:121
776499441,32cyclictest762-21ssh09:50:121
776499422,29cyclictest0-21swapper/110:40:131
7781994114,19cyclictest35966irq/58-eth010:30:133
778199405,22cyclictest35966irq/58-eth011:20:133
778199391,16cyclictest35966irq/58-eth011:50:123
778199381,24cyclictest35966irq/58-eth010:00:123
777399385,12cyclictest27-21ksoftirqd/211:05:132
777399381,30cyclictest0-21swapper/209:35:122
776499381,27cyclictest19435-21ssh12:25:111
776499381,16cyclictest14753-21ssh11:10:091
776499372,9cyclictest25098-21ssh12:10:141
775499375,18cyclictest3734-21ssh11:40:120
7781993613,19cyclictest321rcuc/309:05:123
777399364,19cyclictest25815-21kworker/2:109:30:102
776499361,10cyclictest17369-21kthreadcore09:00:201
777399356,17cyclictest27346irq/40-dwc2_hso09:05:132
777399353,18cyclictest27749-21ssh10:05:102
777399352,26cyclictest28352-21ssh12:30:122
776499351,10cyclictest17287-21tr09:40:211
776499350,12cyclictest12941-21grep10:15:021
775499358,20cyclictest12-21ksoftirqd/009:00:130
776499341,11cyclictest9908-21cpuspeed09:55:141
776499341,10cyclictest16787-21kthreadcore08:25:211
776499336,3cyclictest131rcu_preempt12:15:251
776499336,3cyclictest131rcu_preempt12:15:251
776499333,24cyclictest13273-21ssh10:15:131
776499332,9cyclictest1175-21wc09:30:271
776499332,23cyclictest5725-21ssh11:05:121
776499332,10cyclictest23776-21timerwakeupswit08:30:271
776499331,10cyclictest30548-21tr08:05:201
776499331,10cyclictest12957-21grep07:45:261
776499331,10cyclictest12957-21grep07:45:261
7754993321,6cyclictest536-21usb-storage11:10:110
777399322,19cyclictest27346irq/40-dwc2_hso09:20:132
777399322,18cyclictest9271-21sh11:25:122
777399322,13cyclictest23762-21ssh11:15:132
776499322,23cyclictest4936-21ssh12:35:141
776499321,9cyclictest26016-21kthreadcore08:35:201
7764993213,14cyclictest11828-21diskmemload09:20:131
776499321,11cyclictest6010-21kthreadcore11:40:211
776499321,10cyclictest434-21ssh09:50:011
776499320,12cyclictest3943-21awk11:20:231
775499322,23cyclictest16173-21ssh12:05:120
777399319,17cyclictest27-21ksoftirqd/211:35:122
777399312,15cyclictest4358-21sh10:10:142
776499312,8cyclictest0-21swapper/108:00:131
776499312,22cyclictest6316-21ssh09:35:131
776499311,9cyclictest29180-21kthreadcore11:35:201
776499311,10cyclictest32569-21ssh10:05:281
777399305,17cyclictest27346irq/40-dwc2_hso12:15:122
777399305,17cyclictest27346irq/40-dwc2_hso12:15:122
777399302,21cyclictest0-21swapper/208:40:142
776499304,15cyclictest20795-21ssh09:25:141
776499301,15cyclictest22320-21ssh10:20:141
776499301,11cyclictest6793-21cpu08:50:131
776499301,11cyclictest21700-21ssh11:50:131
775499303,18cyclictest27141-21ssh11:35:120
778199292,14cyclictest35966irq/58-eth009:35:123
777399294,8cyclictest2824-21ssh09:15:112
777399293,15cyclictest27346irq/40-dwc2_hso07:55:122
777399292,22cyclictest930-21snmpd08:00:112
7764992916,6cyclictest0-21swapper/111:25:121
776499291,11cyclictest20198-21latency10:35:221
776499291,10cyclictest20189-21rm10:55:151
776499291,10cyclictest18913-21df_inode10:00:131
775499292,19cyclictest5752-21ssh11:05:120
777399282,20cyclictest305-21ssh11:20:122
777399281,17cyclictest24244-21ssh09:45:142
777399281,16cyclictest745-21sh09:50:112
777399281,16cyclictest745-21sh09:50:112
776499287,6cyclictest16317-21cut12:05:151
776499282,7cyclictest29998-21ntp_states09:10:291
776499281,11cyclictest17587-21users11:45:321
7754992813,9cyclictest7741-21cyclictest09:45:130
7754992812,9cyclictest12-21ksoftirqd/012:28:190
777399278,11cyclictest27-21ksoftirqd/211:00:132
777399272,19cyclictest27346irq/40-dwc2_hso12:35:132
777399271,20cyclictest31295-21ssh10:25:132
777399271,20cyclictest30671-21ssh11:55:142
778199266,12cyclictest35966irq/58-eth010:10:143
777399262,9cyclictest0-21swapper/207:30:132
777399261,9cyclictest9829-21ssh09:55:132
776499260,10cyclictest18221-21ssh11:30:121
775499266,3cyclictest131rcu_preempt11:00:310
775499263,20cyclictest12697-21ssh11:45:120
777399254,16cyclictest27346irq/40-dwc2_hso12:00:142
777399254,10cyclictest13226-21acpi10:15:112
777399251,15cyclictest13652-21cron07:50:012
777399251,15cyclictest13652-21cron07:50:002
777399251,10cyclictest22476-21rm11:50:182
776499251,11cyclictest7222-21ssh12:00:131
775499252,16cyclictest28336-21ssh12:30:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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