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2026-04-17 - 23:09

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 Fri Apr 17, 2026 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1882399583,44cyclictest12995-21ssh10:45:121
1883199561,31cyclictest31720-21ssh09:25:122
1880799544,45cyclictest6372-21ssh10:05:130
1880799543,41cyclictest29857-21ssh10:00:120
1880799514,45cyclictest2066-21ssh11:15:110
1880799494,40cyclictest25481-21ssh11:10:130
1882399472,33cyclictest9769-21ssh10:25:121
1882399463,29cyclictest16474-21ssh11:05:121
1880799462,35cyclictest22821-21ssh09:20:130
1880799443,5cyclictest131rcu_preempt07:30:130
1880799433,26cyclictest3622-21ssh12:10:110
1884299421,27cyclictest35966irq/58-eth010:45:103
1880799421,14cyclictest26277-21ssh09:40:120
1883199392,31cyclictest2779-21ssh09:45:122
18823993926,8cyclictest536-21usb-storage07:45:111
1880799383,33cyclictest21992-21ssh10:50:140
1880799362,25cyclictest30952-21ssh10:55:110
1880799361,11cyclictest29093-21tr08:25:210
1880799361,11cyclictest29093-21tr08:25:200
18831993518,12cyclictest18947-21apt-get07:10:122
1882399352,25cyclictest0-21swapper/109:10:121
1880799343,28cyclictest11126-21ssh11:20:130
1880799343,21cyclictest12-21ksoftirqd/007:25:150
1880799342,25cyclictest0-21swapper/009:00:130
18807993417,11cyclictest4412-21diskmemload12:25:150
18807993411,4cyclictest24103-21unixbench_multi07:45:250
1884299331,19cyclictest35966irq/58-eth010:25:123
18831993318,10cyclictest27104-21apt-get12:05:122
1880799332,25cyclictest17247-21ssh09:35:140
18807993310,4cyclictest10505-21kthreadcore10:25:190
18842993223,6cyclictest0-21swapper/311:10:133
18831993223,4cyclictest20059-21apt-get11:25:122
18831993220,9cyclictest12655-21apt-get12:15:132
18831993220,9cyclictest12655-21apt-get12:15:122
1880799323,23cyclictest27130-21ssh12:05:130
1880799321,12cyclictest16300-21ssh12:35:150
18842993112,13cyclictest0-21swapper/309:55:163
1883199313,12cyclictest131rcu_preempt11:10:132
18831993119,8cyclictest27-21ksoftirqd/210:33:232
18831993119,8cyclictest27-21ksoftirqd/210:33:222
1883199311,15cyclictest4812-21ssh09:10:142
18831993111,15cyclictest0-21swapper/211:45:112
1880799311,11cyclictest18165-21ssh12:00:110
1880799311,11cyclictest11583-21sh09:50:020
1883199303,14cyclictest0-21swapper/209:42:122
18831993018,9cyclictest27590-21apt-get10:35:102
18831993017,4cyclictest9177-21apt-get11:55:132
1880799308,4cyclictest4920-21kthreadcore10:40:200
1880799302,24cyclictest27623-21ssh10:35:120
1880799301,10cyclictest20648-21grep11:05:280
18842992921,5cyclictest35966irq/58-eth011:15:123
18842992913,10cyclictest35966irq/58-eth009:45:143
1883199292,21cyclictest20790-21ssh09:35:212
1883199291,10cyclictest0-21swapper/207:30:122
1883199290,20cyclictest12053-21ssh10:06:322
18823992912,12cyclictest2788-21diskmemload09:45:141
1880799294,16cyclictest15264-21ssh10:10:110
1880799293,7cyclictest0-21swapper/009:34:220
1880799292,9cyclictest7568-21sh11:00:130
1880799292,20cyclictest12667-21ssh12:15:120
1880799292,20cyclictest12667-21ssh12:15:120
1880799291,11cyclictest23602-21apt-get11:45:130
18842992816,9cyclictest35966irq/58-eth010:00:113
18842992814,8cyclictest35966irq/58-eth012:10:123
1883199287,16cyclictest0-21swapper/210:40:112
18831992818,7cyclictest18150-21apt-get12:00:122
18831992816,2cyclictest20888-21apt-get09:55:162
1882399283,17cyclictest24253-21ssh10:15:141
1882399282,21cyclictest15350-21ssh11:04:091
1882399282,19cyclictest20793-21sed09:35:221
1880799283,19cyclictest7304-21ssh12:30:150
1880799283,18cyclictest7428-21kworker/u8:210:20:130
1880799283,14cyclictest9208-21ssh11:55:130
18807992815,8cyclictest0-21swapper/008:30:140
1880799281,23cyclictest29053-21ssh11:30:130
1884299279,11cyclictest35966irq/58-eth009:00:133
1884299273,16cyclictest0-21swapper/311:04:093
1883199277,9cyclictest0-21swapper/210:25:112
1883199276,18cyclictest0-21swapper/208:25:122
1883199276,18cyclictest0-21swapper/208:25:122
1883199272,4cyclictest29035-21apt-get11:30:142
18831992720,4cyclictest29899-21apt-get07:55:152
18831992720,2cyclictest3411-21apt-get08:35:132
1882399272,19cyclictest7306-21sh12:30:141
1880799271,8cyclictest8700-21switchtime09:10:280
1880799271,3cyclictest131rcu_preempt09:55:150
1880799271,11cyclictest32675-21df_inode11:50:150
1884299263,11cyclictest0-21swapper/310:44:223
1884299262,17cyclictest0-21swapper/310:59:063
18842992620,2cyclictest0-21swapper/310:30:133
18842992620,2cyclictest0-21swapper/310:30:123
18842992615,8cyclictest0-21swapper/311:05:103
18842992610,9cyclictest0-21swapper/310:35:093
1883199266,16cyclictest261rcuc/210:54:222
1883199261,16cyclictest27346irq/40-dwc2_hso11:05:122
1883199260,6cyclictest27-21ksoftirqd/211:42:182
1882399261,19cyclictest23627-21ssh11:45:131
18823992611,8cyclictest21-21ksoftirqd/107:30:011
18823992610,8cyclictest21-21ksoftirqd/108:45:011
1880799262,17cyclictest11885-21ssh09:50:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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