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2026-03-15 - 18:44

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 Sun Mar 15, 2026 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2445899625,46cyclictest2309-21ssh11:30:131
2444799613,48cyclictest423-21ssh12:05:120
2445899594,44cyclictest19314-21ssh09:15:131
2444799582,45cyclictest22837-21ssh09:35:120
2446699572,38cyclictest17290-21ssh09:50:112
2446699542,20cyclictest131rcu_preempt08:40:122
2445899545,5cyclictest131rcu_preempt11:10:121
2446699521,31cyclictest26322-21ssh09:55:132
2446699511,28cyclictest20800-21rm10:10:122
2445899513,4cyclictest131rcu_preempt08:50:131
2444799518,5cyclictest131rcu_preempt09:20:110
2445899494,5cyclictest131rcu_preempt07:25:121
24466994717,22cyclictest27-21ksoftirqd/210:15:122
2445899462,38cyclictest5807-21ssh11:50:121
24447994529,10cyclictest0-21swapper/011:55:140
2446699448,19cyclictest27-21ksoftirqd/210:00:132
2447499435,21cyclictest28366irq/58-eth011:55:133
2447499432,24cyclictest28366irq/58-eth011:15:123
2447499422,27cyclictest28366irq/58-eth010:05:123
2445899422,32cyclictest4707-21ssh09:25:121
24447994226,10cyclictest0-21swapper/011:40:130
24447994127,10cyclictest16686-21ssh11:20:120
2447499406,19cyclictest28366irq/58-eth011:35:133
2447499403,23cyclictest28366irq/58-eth011:45:113
2447499403,23cyclictest28366irq/58-eth011:45:103
24466994020,15cyclictest27-21ksoftirqd/209:20:122
2446699392,28cyclictest27478-21ssh12:20:132
2446699392,28cyclictest27478-21ssh12:20:122
24466993918,10cyclictest27-21ksoftirqd/212:30:142
2445899391,32cyclictest22075-21ssh11:05:121
2444799391,31cyclictest11260-21ssh11:35:140
2446699382,19cyclictest20398-21ntp_states11:20:242
2446699372,18cyclictest11304-21ssh12:28:232
24447993720,12cyclictest0-21swapper/011:48:230
24447993720,12cyclictest0-21swapper/011:48:220
2447499363,19cyclictest28366irq/58-eth012:05:103
2446699362,18cyclictest23396-21ssh10:29:242
2445899364,21cyclictest21-21ksoftirqd/110:40:131
2446699353,24cyclictest0-21swapper/209:45:242
2445899341,24cyclictest4238-21ssh10:55:141
24447993417,12cyclictest12-21ksoftirqd/010:04:210
24458993314,14cyclictest21-21ksoftirqd/108:30:101
2445899331,24cyclictest13763-21ssh09:30:131
2444799333,20cyclictest25755-21ssh11:25:140
24447993323,3cyclictest12-21ksoftirqd/011:15:120
24447993210,17cyclictest12-21ksoftirqd/008:00:120
24458993112,10cyclictest633-21Async12:11:531
24458993112,10cyclictest633-21Async12:11:531
2444799312,14cyclictest4087-21ssh12:25:140
2447499301,17cyclictest28366irq/58-eth007:30:143
2446699302,21cyclictest9415-21ssh12:10:142
2446699302,21cyclictest9415-21ssh12:10:132
2446699302,20cyclictest22346irq/40-dwc2_hso07:50:132
2446699302,18cyclictest261rcuc/211:45:122
2446699302,18cyclictest261rcuc/211:45:112
2445899302,22cyclictest21258-21ssh11:04:281
2444799304,18cyclictest7731-21kworker/u8:010:40:140
2444799302,22cyclictest5402-21ssh10:19:230
2444799302,22cyclictest1982-21ssh09:59:220
2444799302,22cyclictest10320-21ssh09:26:240
24447993018,7cyclictest0-21swapper/010:50:140
2447499293,14cyclictest28366irq/58-eth008:35:133
2446699293,19cyclictest0-21swapper/209:26:232
2446699293,11cyclictest0-21swapper/211:09:322
2446699292,18cyclictest22346irq/40-dwc2_hso08:10:142
2446699292,11cyclictest4026-21ntp_192.168.11412:05:232
2445899292,21cyclictest6009-21ssh12:06:231
2445899292,21cyclictest19053-21ssh10:25:261
2445899292,19cyclictest908-21missed_timers10:15:221
2444799292,22cyclictest32444-21ssh10:34:270
2444799291,25cyclictest13177-21ssh11:00:120
2447499284,16cyclictest0-21swapper/310:03:243
2446699283,17cyclictest22346irq/40-dwc2_hso08:55:132
2446699282,21cyclictest32408-21ssh10:34:252
2446699282,21cyclictest16959-21ssh10:43:232
2446699282,20cyclictest22346irq/40-dwc2_hso07:25:132
2446699282,11cyclictest0-21swapper/211:29:332
2445899282,3cyclictest0-21swapper/110:35:121
2444799282,21cyclictest29330-21ssh12:38:230
2444799282,19cyclictest11955-21ssh09:45:240
2447499274,12cyclictest28366irq/58-eth008:25:133
2447499273,18cyclictest0-21swapper/310:34:253
2447499271,13cyclictest28366irq/58-eth011:40:133
24474992710,12cyclictest28366irq/58-eth011:20:123
2446699277,16cyclictest27-21ksoftirqd/209:30:132
2446699275,13cyclictest27-21ksoftirqd/210:20:142
2445899273,2cyclictest131rcu_preempt10:30:131
2445899272,19cyclictest13922-21ssh09:46:231
2445899271,20cyclictest2951-21ssh10:00:141
2444799271,21cyclictest17306-21ssh09:50:120
2447499267,11cyclictest28366irq/58-eth009:20:113
2447499263,17cyclictest0-21swapper/312:38:233
2446699263,19cyclictest22346irq/40-dwc2_hso12:15:122
2446699263,19cyclictest22346irq/40-dwc2_hso12:15:122
2446699262,17cyclictest22346irq/40-dwc2_hso07:35:112
24466992610,10cyclictest22346irq/40-dwc2_hso11:58:242
24458992613,7cyclictest0-21swapper/109:24:171
24474992518,5cyclictest321rcuc/309:27:593
2447499251,12cyclictest28366irq/58-eth009:55:133
2446699252,8cyclictest30364-21ssh12:39:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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