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2026-03-15 - 06:05

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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 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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rackeslot6s.osadl.org (updated Sun Mar 15, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3837877996915,5cyclictest3838700-21munin-node19:15:010
3837877996253,5cyclictest0-21swapper/000:15:120
3837877995652,3cyclictest0-21swapper/021:30:110
3837877995652,3cyclictest0-21swapper/021:30:110
3837881995445,7cyclictest311ktimers/220:30:012
3837880995345,4cyclictest3865235-21apt21:50:001
3837877995239,8cyclictest0-21swapper/000:10:010
383787799521,48cyclictest3869408-21mailstats22:10:260
3837880995142,5cyclictest3847421-21grep20:05:011
383787799492,43cyclictest0-21swapper/020:30:110
383787799492,43cyclictest0-21swapper/020:30:110
3837881994838,5cyclictest3872051-21unixbench_singl22:25:282
3837880994840,5cyclictest3885876-21munin-plugin-st23:50:001
3837880994839,6cyclictest3860157-21cron21:20:001
3837880994811,33cyclictest22-21rcuc/121:40:181
3837877994841,4cyclictest3880710-21run-parts23:19:590
3837877994833,10cyclictest15-21rcuc/023:05:130
3837877994815,26cyclictest15-21rcuc/021:50:010
3837880994734,8cyclictest3856718-21unixbench_singl20:55:271
3837881994637,5cyclictest0-21swapper/200:05:002
3837880994632,9cyclictest0-21swapper/122:20:271
3837880994630,11cyclictest0-21swapper/119:15:011
3837880994626,12cyclictest0-21swapper/121:10:201
383788099462,19cyclictest22-21rcuc/123:00:021
383787799466,7cyclictest0-21swapper/019:35:000
383787799461,41cyclictest3852902-21/usr/sbin/munin20:35:210
3837881994529,10cyclictest0-21swapper/220:00:202
3837880994510,18cyclictest0-21swapper/121:05:181
3837877994539,3cyclictest167350irq/118-8000000.ethernet-tx021:35:240
3837880994436,4cyclictest0-21swapper/119:25:291
3837880994436,4cyclictest0-21swapper/119:25:291
3837880994432,8cyclictest0-21swapper/119:20:011
3837880994432,7cyclictest0-21swapper/100:20:291
3837880994432,7cyclictest0-21swapper/100:20:291
3837880994431,9cyclictest0-21swapper/123:55:281
3837880994431,7cyclictest3884072-21grep23:35:281
3837880994431,7cyclictest3884072-21grep23:35:281
3837880994431,7cyclictest3874567-21grep22:40:261
3837877994429,11cyclictest0-21swapper/023:55:270
383787799442,39cyclictest0-21swapper/020:10:190
3837881994335,4cyclictest3866108-21apt-config21:55:012
3837881994332,8cyclictest3881450-21unixbench_multi23:20:282
3837881994332,8cyclictest3881450-21unixbench_multi23:20:282
3837881994327,10cyclictest0-21swapper/219:40:282
3837881994323,15cyclictest311ktimers/200:25:132
3837880994332,6cyclictest3855749-21grep20:50:271
3837880994332,6cyclictest0-21swapper/122:25:191
3837880994331,8cyclictest0-21swapper/121:20:261
3837880994330,8cyclictest0-21swapper/100:35:281
3837880994328,11cyclictest231ktimers/100:00:151
383788099432,6cyclictest0-21swapper/122:05:021
3837877994328,11cyclictest0-21swapper/020:55:280
383787799431,18cyclictest0-21swapper/021:20:010
3837881994229,9cyclictest0-21swapper/219:45:272
3837881994229,7cyclictest0-21swapper/220:15:292
3837880994233,5cyclictest167450irq/126-8000000.ethernet-tx123:00:191
3837880994232,6cyclictest0-21swapper/120:10:261
3837880994229,9cyclictest0-21swapper/122:50:281
3837880994229,8cyclictest3865968-21grep21:50:271
3837880994223,13cyclictest231ktimers/119:40:121
383787799424,13cyclictest14-21rcu_preempt22:00:000
3837877994235,5cyclictest3855857-21munin-plugin-st20:55:000
3837877994234,5cyclictest3867547-21phc2sys22:00:250
3837877994230,7cyclictest131ktimers/019:15:290
3837877994227,10cyclictest0-21swapper/021:20:180
383787799421,38cyclictest3885874-21munin-run23:50:000
383787799421,38cyclictest0-21swapper/022:35:110
383787799421,38cyclictest0-21swapper/019:55:240
383787799421,2cyclictest0-21swapper/022:30:020
383788199418,28cyclictest0-21swapper/223:10:292
383788199418,28cyclictest0-21swapper/223:10:282
3837881994123,13cyclictest311ktimers/200:15:122
3837880994133,4cyclictest167450irq/126-8000000.ethernet-tx119:55:181
3837880994132,6cyclictest808-21crond19:50:001
3837880994130,8cyclictest0-21swapper/119:50:281
3837880994127,9cyclictest0-21swapper/120:35:171
3837880994127,8cyclictest0-21swapper/122:15:301
3837880994126,6cyclictest0-21swapper/119:30:211
3837877994134,4cyclictest3859180-21tr21:10:270
3837877994123,15cyclictest0-21swapper/022:15:190
3837877994118,21cyclictest0-21swapper/022:20:260
383787799411,3cyclictest0-21swapper/020:20:020
3837881994028,8cyclictest0-21swapper/223:25:282
3837881994028,8cyclictest0-21swapper/223:25:282
3837881994028,8cyclictest0-21swapper/222:00:292
3837880994024,9cyclictest0-21swapper/100:10:191
3837880994022,10cyclictest0-21swapper/123:05:271
3837877994034,3cyclictest167350irq/118-8000000.ethernet-tx022:05:180
3837877994034,3cyclictest0-21swapper/020:05:270
3837877994033,4cyclictest0-21swapper/019:50:150
3837877994030,5cyclictest0-21swapper/020:00:220
3837877994026,8cyclictest0-21swapper/000:20:210
3837877994026,8cyclictest0-21swapper/000:20:210
383788199398,24cyclictest3889332-21kworker/u8:1-events_power_efficient00:21:192
383788199398,24cyclictest3889332-21kworker/u8:1-events_power_efficient00:21:182
3837881993932,4cyclictest0-21swapper/221:20:262
3837881993930,4cyclictest0-21swapper/221:25:292
3837881993928,8cyclictest0-21swapper/220:30:292
3837881993928,8cyclictest0-21swapper/220:30:292
3837881993928,7cyclictest0-21swapper/221:15:292
3837881993927,8cyclictest0-21swapper/219:35:272
3837880993928,6cyclictest0-21swapper/122:30:271
3837880993926,9cyclictest0-21swapper/122:45:281
3837880993926,7cyclictest0-21swapper/120:05:251
3837880993925,9cyclictest0-21swapper/119:35:271
383787799394,3cyclictest0-21swapper/000:05:000
3837877993932,3cyclictest167350irq/118-8000000.ethernet-tx019:39:290
3837877993930,6cyclictest3864397-21munin-plugin-st21:45:010
3837877993929,7cyclictest0-21swapper/000:35:270
3837877993929,6cyclictest20850irq/208-8000000.ethernet23:35:290
3837877993929,6cyclictest20850irq/208-8000000.ethernet23:35:290
3837877993927,7cyclictest0-21swapper/021:50:280
3837877993925,9cyclictest0-21swapper/023:00:290
383787799391,36cyclictest0-21swapper/022:55:220
383787799391,36cyclictest0-21swapper/020:25:140
383787799391,36cyclictest0-21swapper/019:25:150
383787799391,36cyclictest0-21swapper/019:25:150
383787799391,2cyclictest0-21swapper/022:55:000
3837881993829,5cyclictest3848145-21grep20:05:262
3837881993827,8cyclictest0-21swapper/223:45:292
3837881993827,7cyclictest0-21swapper/221:40:272
3837881993827,7cyclictest0-21swapper/220:55:272
3837881993825,8cyclictest0-21swapper/221:45:282
383788199382,28cyclictest3886238-21/usr/sbin/munin23:50:192
3837881993822,11cyclictest0-21swapper/223:15:312
3837880993826,8cyclictest0-21swapper/120:15:291
3837880993825,8cyclictest0-21swapper/121:35:181
3837880993824,9cyclictest0-21swapper/121:25:301
383787799381,4cyclictest3880988-21df_inode23:20:160
383787799381,4cyclictest3880988-21df_inode23:20:160
383787799381,35cyclictest0-21swapper/023:40:200
383787799381,35cyclictest0-21swapper/023:30:130
3837881993728,5cyclictest0-21swapper/222:35:272
3837881993727,7cyclictest0-21swapper/222:50:292
3837881993726,8cyclictest0-21swapper/219:50:282
3837881993725,7cyclictest0-21swapper/223:05:282
3837881993723,10cyclictest311ktimers/219:55:112
3837881993722,11cyclictest311ktimers/221:05:132
3837880993728,6cyclictest3892681-21grep00:25:281
3837880993727,6cyclictest3854099-21grep20:40:291
3837880993725,8cyclictest3890958-21grep00:15:301
3837877993732,2cyclictest0-21swapper/019:20:200
3837877993728,5cyclictest0-21swapper/019:40:270
383787799371,34cyclictest0-21swapper/021:05:110
3837881993622,9cyclictest0-21swapper/220:10:192
3837881993620,11cyclictest311ktimers/221:00:122
3837880993626,6cyclictest0-21swapper/100:05:291
3837880993624,8cyclictest3850766-21grep20:20:261
3837880993624,6cyclictest0-21swapper/122:05:281
3837880993622,8cyclictest0-21swapper/123:30:301
3837880993622,5cyclictest0-21swapper/120:25:201
3837877993629,4cyclictest20850irq/208-8000000.ethernet20:40:170
3837877993629,4cyclictest0-21swapper/019:45:120
383787799361,3cyclictest0-21swapper/022:45:020
383787799361,33cyclictest0-21swapper/020:24:590
383787799361,33cyclictest0-21swapper/000:25:150
3837881993526,5cyclictest0-21swapper/223:00:252
3837881993524,8cyclictest0-21swapper/222:55:252
3837881993524,7cyclictest3869440-21grep22:10:272
383788099356,20cyclictest3880697-21cron23:19:591
3837880993527,5cyclictest0-21swapper/121:35:011
3837880993527,5cyclictest0-21swapper/121:35:001
3837880993523,8cyclictest0-21swapper/123:10:201
3837880993523,8cyclictest0-21swapper/123:10:201
3837880993523,8cyclictest0-21swapper/119:20:281
3837880993519,9cyclictest3866435-21sshd21:55:181
3837880993519,9cyclictest0-21swapper/123:25:271
3837880993519,9cyclictest0-21swapper/123:25:271
3837880993518,10cyclictest0-21swapper/122:35:201
3837877993530,2cyclictest0-21swapper/022:40:150
3837877993526,5cyclictest0-21swapper/023:10:300
3837877993526,5cyclictest0-21swapper/023:10:290
383787799351,4cyclictest0-21swapper/023:50:200
383788199349,9cyclictest0-21swapper/221:15:022
383788199344,22cyclictest3838765-21latency_hist19:15:002
3837881993427,4cyclictest0-21swapper/221:35:272
3837881993425,6cyclictest0-21swapper/222:30:282
3837881993424,7cyclictest0-21swapper/200:05:282
3837881993421,10cyclictest0-21swapper/220:50:262
383788199341,28cyclictest0-21swapper/223:35:162
383788199341,28cyclictest0-21swapper/223:35:162
3837880993423,6cyclictest0-21swapper/120:35:011
3837880993423,6cyclictest0-21swapper/120:35:011
3837877993428,4cyclictest20850irq/208-8000000.ethernet00:30:240
3837877993428,4cyclictest0-21swapper/023:25:270
3837877993428,4cyclictest0-21swapper/023:25:260
3837877993419,10cyclictest0-21swapper/020:45:280
383787799341,4cyclictest0-21swapper/000:15:020
3837877993413,17cyclictest0-21swapper/021:05:010
3837881993326,3cyclictest14-21rcu_preempt19:35:012
3837881993325,6cyclictest311ktimers/200:30:122
3837881993325,4cyclictest0-21swapper/221:30:192
3837881993325,4cyclictest0-21swapper/221:30:192
3837881993321,9cyclictest311ktimers/219:15:152
3837881993319,9cyclictest311ktimers/220:20:102
383788199331,4cyclictest0-21swapper/220:40:012
3837880993325,4cyclictest0-21swapper/123:20:281
3837880993325,4cyclictest0-21swapper/123:20:281
3837880993321,6cyclictest0-21swapper/123:40:271
3837877993324,6cyclictest3872352-21/usr/sbin/munin22:30:160
383787799331,3cyclictest0-21swapper/021:27:200
3837881993223,6cyclictest0-21swapper/222:45:022
3837881993222,7cyclictest14-21rcu_preempt20:40:182
3837881993221,7cyclictest3841411-21grep19:25:292
3837881993221,7cyclictest3841411-21grep19:25:292
3837881993220,7cyclictest0-21swapper/200:10:282
383788199321,2cyclictest0-21swapper/222:20:002
383788199321,25cyclictest0-21swapper/222:05:102
3837880993223,6cyclictest0-21swapper/100:30:281
3837880993222,7cyclictest0-21swapper/122:10:261
383787799321,6cyclictest3837916-21latency_hist19:10:000
3837881993124,4cyclictest3885035-21munin-run23:45:002
3837881993122,5cyclictest0-21swapper/200:35:212
3837880993114,9cyclictest0-21swapper/123:50:201
3837881993019,9cyclictest3871039-21ptp4l-jitter22:20:252
383788199301,27cyclictest0-21swapper/222:45:282
383788099304,18cyclictest22-21rcuc/120:50:021
3837880993020,8cyclictest231ktimers/121:00:111
3837881992922,3cyclictest0-21swapper/221:55:272
3837881992921,4cyclictest0-21swapper/223:30:292
3837881992720,4cyclictest0-21swapper/219:20:272
3837881992717,7cyclictest0-21swapper/200:00:012
383788099271,2cyclictest0-21swapper/119:10:001
383788199242,16cyclictest3854525-21sh20:45:192
3837881992316,5cyclictest0-21swapper/219:10:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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