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2025-12-06 - 16:12

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 Sat Dec 06, 2025 12:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2500799655,48cyclictest7739-21ssh10:10:121
25023995335,12cyclictest29566irq/58-eth009:35:153
25023995335,12cyclictest29566irq/58-eth009:35:153
2499899529,6cyclictest131rcu_preempt09:15:140
2499899512,40cyclictest31843-21ssh12:25:160
2500799481,33cyclictest3438-21ssh11:10:141
2499899483,35cyclictest8313-21ssh12:30:160
2499899483,35cyclictest8313-21ssh12:30:150
2500799462,32cyclictest27212-21ssh11:25:271
2501599441,25cyclictest13909-21ssh10:35:142
2500799431,34cyclictest17392-21ssh12:35:291
2500799431,2cyclictest0-21swapper/109:55:131
25007994311,17cyclictest21-21ksoftirqd/110:30:151
2502399414,20cyclictest29566irq/58-eth012:15:133
2502399403,21cyclictest29566irq/58-eth012:30:163
2502399403,21cyclictest29566irq/58-eth012:30:163
2500799401,29cyclictest29264-21ssh10:45:121
2500799400,5cyclictest131rcu_preempt09:05:151
24998993915,18cyclictest12-21ksoftirqd/007:25:130
2499899391,30cyclictest864-21ssh09:45:140
2499899381,33cyclictest10230-21ssh11:35:160
2500799371,29cyclictest8831-21ssh09:50:121
2499899373,26cyclictest17491-21ssh09:35:160
2499899373,26cyclictest17491-21ssh09:35:150
2500799352,5cyclictest131rcu_preempt11:45:151
2502399342,19cyclictest29566irq/58-eth011:15:123
2499899345,21cyclictest22894-21diskmemload12:20:110
2499899345,14cyclictest4372-21ssh10:50:140
2499899341,23cyclictest11340-21diskmemload10:15:140
2502399332,20cyclictest29566irq/58-eth011:50:143
25023993314,9cyclictest29566irq/58-eth011:10:123
2500799324,17cyclictest21-21ksoftirqd/107:45:131
2500799324,17cyclictest21-21ksoftirqd/107:45:121
2499899324,18cyclictest12-21ksoftirqd/011:50:130
2501599316,15cyclictest26346irq/40-dwc2_hso09:55:132
2501599315,16cyclictest26346irq/40-dwc2_hso10:45:142
2500799314,9cyclictest131rcu_preempt07:50:141
2500799311,25cyclictest18368-21ssh11:40:141
2501599303,21cyclictest0-21swapper/211:20:142
2501599303,16cyclictest26346irq/40-dwc2_hso11:40:142
2502399294,14cyclictest0-21swapper/312:25:163
2502399292,14cyclictest29566irq/58-eth009:20:133
2501599294,10cyclictest0-21swapper/211:30:132
25015992920,5cyclictest26346irq/40-dwc2_hso07:25:132
25015992912,11cyclictest0-21swapper/207:45:132
25015992912,11cyclictest0-21swapper/207:45:122
2500799294,16cyclictest21-21ksoftirqd/111:00:171
2500799292,20cyclictest14025-21ssh12:15:141
2500799291,20cyclictest10219-21ssh11:35:141
24998992918,7cyclictest11340-21diskmemload09:20:140
25023992815,9cyclictest29566irq/58-eth012:20:133
25023992811,10cyclictest29566irq/58-eth009:45:143
2501599282,20cyclictest0-21swapper/208:20:152
2501599281,12cyclictest27-21ksoftirqd/211:36:442
24998992812,8cyclictest629-21Async14:00:480
2499899281,22cyclictest12268-21ssh10:55:180
2501599276,7cyclictest27-21ksoftirqd/211:15:002
2501599273,11cyclictest27-21ksoftirqd/210:15:412
2500799273,16cyclictest21-21ksoftirqd/108:45:141
2500799272,20cyclictest13914-21ssh10:35:161
2499899272,19cyclictest2797-21ssh12:07:450
2499899272,19cyclictest2797-21ssh12:07:440
2502399262,11cyclictest0-21swapper/311:04:443
25015992612,7cyclictest0-21swapper/209:37:142
25015992612,7cyclictest0-21swapper/209:37:132
2501599256,6cyclictest131rcu_preempt10:57:542
2501599253,10cyclictest27-21ksoftirqd/212:22:082
25015992513,5cyclictest0-21swapper/212:01:252
25015992512,11cyclictest0-21swapper/210:33:412
2501599251,19cyclictest8322-21ssh12:30:172
2501599251,19cyclictest8322-21ssh12:30:162
25007992512,11cyclictest0-21swapper/112:13:201
2501599247,11cyclictest0-21swapper/208:55:152
2501599244,9cyclictest27-21ksoftirqd/211:51:162
2501599241,15cyclictest20055-21apt-get11:00:152
25015992411,4cyclictest0-21swapper/208:00:292
2501599241,13cyclictest15276-21mailstats11:15:292
25015992410,12cyclictest27-21ksoftirqd/212:18:212
2500799248,3cyclictest21-21ksoftirqd/110:40:221
2500799248,3cyclictest21-21ksoftirqd/110:40:211
2500799243,14cyclictest0-21swapper/108:25:141
2500799243,14cyclictest0-21swapper/108:25:141
25007992411,11cyclictest0-21swapper/111:32:381
2499899242,17cyclictest23233-21apt-get08:15:130
24998992412,9cyclictest12-21ksoftirqd/008:50:170
2499899241,15cyclictest25311-21ssh09:40:140
2499899241,10cyclictest20409-21ntp_states09:55:270
2502399234,11cyclictest0-21swapper/309:25:123
2501599239,11cyclictest0-21swapper/208:15:202
2501599238,7cyclictest30070-21cut11:25:372
2501599238,6cyclictest19881-21kthreadcore08:10:192
2501599237,8cyclictest1-21systemd11:56:262
2501599234,15cyclictest27497-21irqrtprio09:20:182
2501599234,12cyclictest27-21ksoftirqd/209:10:272
2501599232,6cyclictest0-21swapper/208:35:042
2501599232,15cyclictest27-21ksoftirqd/210:29:352
2501599231,4cyclictest575766ssh09:25:232
2501599231,19cyclictest7723-21find10:10:132
2501599231,18cyclictest28697-21ssh11:05:192
2500799232,12cyclictest0-21swapper/109:44:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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