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2026-04-08 - 05:28

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 Wed Apr 08, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40895969910890,15cyclictest0-21swapper/121:30:011
40895969910890,15cyclictest0-21swapper/121:30:011
4089596999477,13cyclictest231ktimers/120:30:001
408959799741,53cyclictest0-21swapper/222:00:012
408959799701,34cyclictest0-21swapper/221:00:012
408959799641,52cyclictest0-21swapper/200:30:132
408959799641,49cyclictest0-21swapper/223:35:132
408959799641,2cyclictest0-21swapper/223:40:112
4089597996337,21cyclictest0-21swapper/220:55:012
4089597996337,21cyclictest0-21swapper/220:55:002
408959799632,53cyclictest4143701-21munin-node00:25:122
408959799631,49cyclictest0-21swapper/222:00:122
408959799631,49cyclictest0-21swapper/222:00:122
408959799631,48cyclictest0-21swapper/200:20:112
408959799631,47cyclictest0-21swapper/221:25:142
408959799631,47cyclictest0-21swapper/221:25:142
408959799622,41cyclictest0-21swapper/223:20:012
4089597996128,25cyclictest4117347-21latency_hist21:50:002
4089597996123,33cyclictest0-21swapper/220:10:012
408959799611,2cyclictest0-21swapper/219:15:122
408959799611,2cyclictest0-21swapper/200:00:152
4089597996026,28cyclictest0-21swapper/200:35:182
408959799602,50cyclictest4140463-21cut00:05:212
408959799602,46cyclictest0-21swapper/223:25:142
408959799601,52cyclictest4127559-21/usr/sbin/munin22:50:292
4089597995921,30cyclictest0-21swapper/220:15:252
4089597995921,30cyclictest0-21swapper/220:15:252
408959799591,51cyclictest4136857-21/usr/sbin/munin23:45:182
408959799591,49cyclictest4089759-21apt-get19:10:162
408959799591,45cyclictest0-21swapper/200:15:132
408959799591,43cyclictest0-21swapper/221:20:122
408959799591,33cyclictest0-21swapper/221:10:012
408959799591,2cyclictest0-21swapper/222:30:112
408959799591,2cyclictest0-21swapper/220:40:162
408959799591,2cyclictest0-21swapper/220:40:162
408959799591,2cyclictest0-21swapper/219:45:132
408959799582,48cyclictest4096887-21apt-get19:50:122
408959799581,48cyclictest4111816-21/usr/sbin/munin21:15:252
408959799581,46cyclictest0-21swapper/222:55:142
408959799581,2cyclictest0-21swapper/223:05:122
408959799581,2cyclictest0-21swapper/222:15:102
408959699583,21cyclictest24-21ksoftirqd/119:30:021
408959799572,47cyclictest4103192-21/usr/sbin/munin20:25:262
408959799571,47cyclictest4134390-21/usr/sbin/munin23:30:172
408959799571,47cyclictest4113959-21apt-get21:30:142
4089597995714,34cyclictest0-21swapper/219:40:282
408959799562,46cyclictest4125882-21apt-get22:40:162
408959799562,46cyclictest4125882-21apt-get22:40:162
408959799562,45cyclictest4125564-21unixbench_multi22:35:282
408959799561,47cyclictest4094352-21apt-get19:35:112
408959799561,47cyclictest4092584-21apt-get19:25:162
408959799561,46cyclictest4130938-21apt-get23:10:142
408959799561,2cyclictest0-21swapper/219:20:152
408959799552,46cyclictest4109507-21/usr/sbin/munin21:00:282
4089597995521,28cyclictest4133177-21grep23:20:282
4089597995521,28cyclictest4133177-21grep23:20:282
408959799551,46cyclictest4126720-21/usr/sbin/munin22:45:302
408959799551,46cyclictest4115658-21apt-get21:40:132
408959799551,42cyclictest0-21swapper/222:05:112
408959799551,2cyclictest0-21swapper/220:10:132
408959799551,2cyclictest0-21swapper/220:10:122
408959799551,2cyclictest0-21swapper/200:10:132
408959799551,25cyclictest0-21swapper/220:25:002
408959799541,46cyclictest4099077-21/usr/sbin/munin20:00:282
408959799541,45cyclictest4123609-21/usr/sbin/munin22:25:242
408959799541,45cyclictest4122952-21/usr/sbin/munin22:20:262
408959799541,45cyclictest4117479-21/usr/sbin/munin21:50:142
408959799541,45cyclictest4103783-21/usr/sbin/munin20:30:162
408959799541,2cyclictest0-21swapper/223:50:132
408959699541,23cyclictest24-21ksoftirqd/121:35:011
408959799532,43cyclictest4106339-21diskstats20:45:182
408959799531,45cyclictest4121210-21/usr/sbin/munin22:10:262
408959799531,41cyclictest0-21swapper/221:10:122
408959799523,42cyclictest4098441-21sshd19:58:422
408959799522,43cyclictest4129494-21/usr/sbin/munin23:00:232
408959799521,45cyclictest4104922-21/usr/sbin/munin20:35:262
408959799521,44cyclictest4093803-21/usr/sbin/munin19:30:242
408959799511,43cyclictest4138627-21apt-get23:55:132
4089596995116,13cyclictest4119966-21/usr/sbin/munin22:05:191
408959799501,42cyclictest4114798-21/usr/sbin/munin21:35:102
4089593995039,6cyclictest4091539-21sendmail19:20:000
4089593995039,6cyclictest167350irq/118-8000000.ethernet-tx020:00:000
4089596994928,15cyclictest231ktimers/123:50:121
4089593994832,14cyclictest167350irq/118-8000000.ethernet-tx021:35:290
4089593994831,14cyclictest167350irq/118-8000000.ethernet-tx000:20:150
4089596994732,10cyclictest0-21swapper/120:45:291
4089596994725,13cyclictest231ktimers/119:45:111
4089593994738,5cyclictest4113681-21unixbench_singl21:25:270
4089593994738,5cyclictest4113681-21unixbench_singl21:25:270
4089593994732,12cyclictest0-21swapper/021:19:590
408959799462,36cyclictest4089682-21cat19:10:012
408959699468,7cyclictest4107915-21rm20:55:011
408959699468,7cyclictest4107915-21rm20:55:011
4089593994635,7cyclictest4122203-21grep22:15:270
408959399462,41cyclictest0-21swapper/022:45:110
408959699457,5cyclictest14-21rcu_preempt23:40:011
4089593994538,4cyclictest20650irq/252-8000000.ethernet22:35:130
408959399452,36cyclictest0-21swapper/020:20:010
408959399452,36cyclictest0-21swapper/020:20:010
408959699446,22cyclictest24-21ksoftirqd/119:15:011
4089596994431,8cyclictest0-21swapper/120:55:301
408959399442,5cyclictest4108587-21grep20:55:300
4089596994333,6cyclictest4128948-21grep22:55:281
4089596994332,6cyclictest0-21swapper/120:05:291
4089596994330,6cyclictest4114600-21munin-plugin-st21:35:001
4089596994325,11cyclictest0-21swapper/120:15:291
4089596994325,11cyclictest0-21swapper/120:15:291
4089596994310,26cyclictest0-21swapper/123:33:231
4089593994336,4cyclictest167350irq/118-8000000.ethernet-tx020:25:160
4089593994333,6cyclictest4120141-21sh22:05:200
4089593994330,10cyclictest4145118-21grep00:30:290
4089593994327,14cyclictest167350irq/118-8000000.ethernet-tx000:10:130
408959399431,3cyclictest4093468-21latency_hist19:30:020
4089596994224,10cyclictest0-21swapper/123:40:281
408959699421,6cyclictest0-21swapper/120:45:021
408959699421,6cyclictest0-21swapper/120:45:021
4089593994234,3cyclictest0-21swapper/022:55:000
4089593994233,6cyclictest0-21swapper/023:00:010
4089593994233,4cyclictest4118030-21head21:50:260
408959399421,3cyclictest0-21swapper/000:05:010
4089596994128,9cyclictest0-21swapper/121:45:271
4089596994124,10cyclictest0-21swapper/100:25:021
4089596994121,12cyclictest231ktimers/123:15:121
4089593994135,4cyclictest0-21swapper/023:30:090
4089593994134,4cyclictest167350irq/118-8000000.ethernet-tx023:45:120
4089593994132,6cyclictest4136555-21grep23:40:280
4089593994132,5cyclictest167350irq/118-8000000.ethernet-tx021:10:190
4089593994123,16cyclictest4107303-21lsblk20:50:220
4089593994123,16cyclictest4107303-21lsblk20:50:220
4089596994030,5cyclictest0-21swapper/121:45:011
4089596994027,6cyclictest231ktimers/120:30:241
408959699401,8cyclictest0-21swapper/123:50:011
408959699401,7cyclictest0-21swapper/122:15:011
4089593994032,5cyclictest4112814-21grep21:20:270
4089593994032,4cyclictest0-21swapper/021:45:240
4089593994031,5cyclictest0-21swapper/019:55:020
4089593994023,15cyclictest0-21swapper/021:30:180
408959399401,4cyclictest0-21swapper/000:30:010
4089596993930,6cyclictest0-21swapper/119:40:281
4089596993929,5cyclictest0-21swapper/121:50:251
4089596993927,7cyclictest4130458-21proc_pri23:05:271
4089596993926,8cyclictest0-21swapper/120:00:211
4089596993926,7cyclictest4145937-21grep00:35:301
4089596993923,11cyclictest0-21swapper/121:00:251
4089593993933,4cyclictest20850irq/208-8000000.ethernet23:50:280
4089593993931,5cyclictest167350irq/118-8000000.ethernet-tx019:30:180
4089593993930,6cyclictest4092275-21grep19:20:280
408959399391,3cyclictest0-21swapper/023:30:000
408959399391,2cyclictest0-21swapper/019:50:010
408959699384,14cyclictest22-21rcuc/121:25:011
4089596993830,5cyclictest4133278-21munin-plugin-st23:25:001
4089596993830,5cyclictest4133278-21munin-plugin-st23:24:591
408959699381,4cyclictest0-21swapper/122:35:021
4089596993812,13cyclictest231ktimers/120:35:131
408959399383,5cyclictest4090418-21munin-node19:15:000
408959399383,31cyclictest4100050-21grep20:05:280
4089593993832,4cyclictest0-21swapper/019:35:150
4089593993831,4cyclictest167350irq/118-8000000.ethernet-tx023:35:290
4089593993829,5cyclictest0-21swapper/023:15:260
4089593993829,4cyclictest0-21swapper/020:20:290
4089593993824,11cyclictest0-21swapper/021:05:010
4089593993821,13cyclictest0-21swapper/020:10:280
4089593993821,13cyclictest0-21swapper/020:10:270
4089596993729,6cyclictest0-21swapper/119:55:251
4089596993727,6cyclictest0-21swapper/119:55:001
4089596993727,5cyclictest0-21swapper/119:25:301
4089596993723,10cyclictest231ktimers/123:25:131
4089593993731,4cyclictest0-21swapper/023:00:250
4089593993730,4cyclictest20850irq/208-8000000.ethernet20:45:000
4089593993730,4cyclictest20850irq/208-8000000.ethernet20:45:000
4089593993727,6cyclictest0-21swapper/021:55:290
4089593993726,7cyclictest0-21swapper/020:30:220
408959399372,32cyclictest4124380-21grep22:30:210
408959399371,29cyclictest4133441-21grep23:25:020
408959399371,29cyclictest4133441-21grep23:25:020
4089596993620,11cyclictest0-21swapper/100:15:201
408959699361,2cyclictest0-21swapper/120:25:001
4089593993629,4cyclictest0-21swapper/022:20:140
4089593993626,7cyclictest0-21swapper/020:00:280
408959399361,33cyclictest0-21swapper/022:00:260
408959399361,33cyclictest0-21swapper/022:00:260
4089596993525,6cyclictest0-21swapper/121:10:281
4089596993525,5cyclictest0-21swapper/100:30:281
4089596993524,6cyclictest0-21swapper/122:00:201
4089596993524,6cyclictest0-21swapper/122:00:201
4089596993521,8cyclictest0-21swapper/120:10:281
4089596993521,8cyclictest0-21swapper/120:10:281
408959699351,28cyclictest0-21swapper/122:40:211
408959699351,28cyclictest0-21swapper/122:40:201
4089593993530,2cyclictest0-21swapper/019:40:200
4089593993529,4cyclictest20850irq/208-8000000.ethernet22:10:140
4089593993529,3cyclictest167350irq/118-8000000.ethernet-tx023:05:200
4089593993529,2cyclictest0-21swapper/000:40:010
4089593993528,4cyclictest0-21swapper/023:10:160
4089596993425,4cyclictest0-21swapper/122:35:271
4089596993420,10cyclictest231ktimers/100:25:131
408959699341,2cyclictest0-21swapper/122:55:011
408959699341,2cyclictest0-21swapper/121:20:001
4089593993428,4cyclictest20850irq/208-8000000.ethernet00:05:250
4089593993426,4cyclictest0-21swapper/020:35:190
4089593993422,9cyclictest4139268-21sendmail00:00:000
408959399341,8cyclictest4116053-21processes21:40:260
408959399341,30cyclictest4142647-21run-parts00:19:590
408959699336,12cyclictest4118265-21/usr/sbin/munin21:55:161
4089596993323,7cyclictest231ktimers/119:15:111
4089596993323,5cyclictest0-21swapper/119:35:201
4089596993322,8cyclictest0-21swapper/100:05:291
408959699331,27cyclictest0-21swapper/123:10:211
408959699331,27cyclictest0-21swapper/122:45:221
408959699331,26cyclictest0-21swapper/121:05:191
4089596993312,15cyclictest231ktimers/100:00:111
4089596993311,5cyclictest832-21systemd-network22:23:481
4089593993326,4cyclictest167350irq/118-8000000.ethernet-tx020:45:120
4089596993223,6cyclictest0-21swapper/122:25:301
4089596993221,6cyclictest4141685-21grep00:10:271
4089593993227,3cyclictest20850irq/208-8000000.ethernet22:40:200
4089593993227,3cyclictest20850irq/208-8000000.ethernet22:40:200
4089593993224,4cyclictest4110266-21grep21:05:290
408959699311,25cyclictest0-21swapper/123:55:181
408959699301,2cyclictest0-21swapper/122:20:021
4089596992921,4cyclictest4129858-21grep23:00:291
408959399291,4cyclictest4123418-21diskstats22:25:200
4089596992820,6cyclictest0-21swapper/119:20:221
4089593992518,5cyclictest4086843-1kworker/0:2H+mmc_complete19:10:000
4089596992415,5cyclictest22-21rcuc/119:10:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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