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2026-03-11 - 17:44

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 Wed Mar 11, 2026 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2020999649,8cyclictest131rcu_preempt08:15:110
20234995828,21cyclictest28366irq/58-eth010:20:103
20234995029,11cyclictest28366irq/58-eth010:45:133
2023499502,17cyclictest28366irq/58-eth009:45:133
2023499493,28cyclictest28366irq/58-eth012:35:123
2023499477,25cyclictest0-21swapper/310:30:113
20209994729,12cyclictest12-21ksoftirqd/012:15:130
2020999464,30cyclictest3188-21ssh10:20:120
2021799453,31cyclictest21215-21ssh10:30:111
2020999427,28cyclictest28499-21ssh11:10:120
2020999422,32cyclictest9913-21rm09:30:130
2023499414,22cyclictest28366irq/58-eth009:10:133
2023499412,24cyclictest28366irq/58-eth012:10:133
20217994130,8cyclictest201rcuc/110:00:121
2020999410,2cyclictest131rcu_preempt09:25:130
2023499404,26cyclictest28366irq/58-eth011:30:113
2023499402,24cyclictest28366irq/58-eth011:35:123
2022699401,30cyclictest10887-21ssh12:30:112
2020999404,31cyclictest5773-21diskmemload09:40:150
20226993920,11cyclictest0-21swapper/208:45:132
2022699391,18cyclictest924-21snmpd10:15:112
2021799397,23cyclictest21-21ksoftirqd/107:20:131
2020999392,6cyclictest131rcu_preempt08:20:120
2020999391,30cyclictest32103-21ssh11:30:100
2023499382,21cyclictest28366irq/58-eth010:40:123
2022699382,28cyclictest9289-21grep10:40:202
2023499364,18cyclictest28366irq/58-eth010:35:133
20234993518,9cyclictest0-21swapper/307:45:103
2020999355,22cyclictest5845-21kthreadcore09:45:200
2020999355,20cyclictest15880-21ssh10:45:120
2020999354,20cyclictest12-21ksoftirqd/008:00:120
2022699349,14cyclictest31820-21ssh10:00:122
20226993410,17cyclictest0-21swapper/209:12:562
20217993324,5cyclictest0-21swapper/107:55:141
2020999331,28cyclictest0-21swapper/011:45:120
2020999331,28cyclictest0-21swapper/011:45:120
2023499322,19cyclictest28366irq/58-eth008:15:123
2021799321,19cyclictest12571-21ssh11:55:101
2020999322,23cyclictest8694-21ssh11:35:130
2020999322,22cyclictest24499-21grep10:30:200
20209993220,8cyclictest12-21ksoftirqd/009:15:150
2020999321,23cyclictest14119-21ssh11:20:140
2023499311,19cyclictest28366irq/58-eth012:15:123
2023499311,17cyclictest28366irq/58-eth011:40:133
2022699315,10cyclictest8442-21ssh10:05:122
20226993119,10cyclictest0-21swapper/212:05:122
20226993112,12cyclictest0-21swapper/211:36:212
2020999314,17cyclictest12-21ksoftirqd/010:50:110
20209993112,10cyclictest7268-21ssh12:10:130
20209993110,15cyclictest0-21swapper/012:25:120
20226993012,7cyclictest0-21swapper/211:09:322
2023499291,20cyclictest28366irq/58-eth010:15:123
2022699296,13cyclictest27-21ksoftirqd/212:02:582
20226992913,9cyclictest0-21swapper/209:22:332
2020999292,20cyclictest31894-21grep10:35:190
20209992913,10cyclictest12-21ksoftirqd/007:45:090
2022699288,14cyclictest0-21swapper/211:47:372
2022699288,14cyclictest0-21swapper/211:47:372
2022699283,17cyclictest22346irq/40-dwc2_hso07:25:152
20226992815,4cyclictest27-21ksoftirqd/209:25:552
20226992812,10cyclictest0-21swapper/210:23:112
20226992811,7cyclictest0-21swapper/211:25:362
2022699281,16cyclictest12598-21ssh11:55:122
20226992811,10cyclictest0-21swapper/210:13:412
20226992810,7cyclictest27-21ksoftirqd/211:34:312
2020999282,19cyclictest2234-21kthreadcore10:00:210
2022699275,15cyclictest27-21ksoftirqd/212:39:242
20226992716,5cyclictest27-21ksoftirqd/211:04:402
20226992716,5cyclictest27-21ksoftirqd/211:04:402
20217992710,9cyclictest21-21ksoftirqd/111:51:211
2020999276,11cyclictest0-21swapper/008:10:140
2020999274,14cyclictest5113-21ssh11:15:130
2020999272,19cyclictest5773-21diskmemload12:38:570
20234992610,9cyclictest0-21swapper/312:20:123
2022699269,11cyclictest0-21swapper/211:41:032
2022699268,12cyclictest0-21swapper/211:10:452
2022699267,13cyclictest27-21ksoftirqd/209:54:242
2022699262,16cyclictest22346irq/40-dwc2_hso11:15:152
2022699262,10cyclictest0-21swapper/208:55:132
20226992612,10cyclictest0-21swapper/209:35:132
2021799268,9cyclictest21-21ksoftirqd/112:07:131
20217992617,7cyclictest201rcuc/110:40:121
20209992610,10cyclictest20201-21cyclictest07:30:120
2023499253,15cyclictest28366irq/58-eth009:30:123
2023499251,13cyclictest28366irq/58-eth010:00:113
2022699259,9cyclictest131rcu_preempt12:16:292
2022699259,3cyclictest27-21ksoftirqd/208:30:292
2022699257,5cyclictest0-21swapper/209:41:162
2022699257,12cyclictest0-21swapper/212:21:462
2022699253,16cyclictest22346irq/40-dwc2_hso10:45:122
2022699253,13cyclictest0-21swapper/210:26:342
2022699253,13cyclictest0-21swapper/210:26:342
20226992514,9cyclictest3554-21ssh10:36:312
20226992514,8cyclictest0-21swapper/212:10:112
20226992514,3cyclictest0-21swapper/208:40:142
20226992514,3cyclictest0-21swapper/208:40:142
20226992512,7cyclictest0-21swapper/209:58:252
2022699251,13cyclictest1897-21ssh12:25:132
20217992512,3cyclictest131rcu_preempt11:45:131
20217992512,3cyclictest131rcu_preempt11:45:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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