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2026-08-20 - 13:09

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 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.

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 the 792 highest latencies:
System rackeslot6s.osadl.org (updated Thu Aug 20, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
72408799868,74cyclictest0-21swapper/020:10:010
724090997638,6cyclictest0-21swapper/123:50:291
72409199712,28cyclictest0-21swapper/222:15:022
72408799713,50cyclictest12-21ksoftirqd/023:10:020
724090996936,8cyclictest774689-21cron00:05:001
724090996928,9cyclictest0-21swapper/120:00:331
724090996928,9cyclictest0-21swapper/120:00:331
72409199645,36cyclictest30-21rcuc/221:30:012
724091996441,14cyclictest0-21swapper/200:30:002
724087996335,17cyclictest0-21swapper/023:55:020
72408799571,4cyclictest0-21swapper/022:50:120
724091995433,14cyclictest311ktimers/221:55:162
72408799542,5cyclictest729290-21grep19:35:280
724091995326,20cyclictest30-21rcuc/223:10:022
72408799532,48cyclictest12-21ksoftirqd/021:30:010
724090995244,5cyclictest167450irq/126-8000000.ethernet-tx121:45:261
72408799524,5cyclictest743854-21apt-get21:05:010
72408799516,13cyclictest0-21swapper/021:45:020
72408799491,44cyclictest766466-21fschecks_count23:15:180
724091994831,11cyclictest311ktimers/221:00:132
72409199481,13cyclictest32-21ksoftirqd/221:15:022
724087994838,6cyclictest0-21swapper/021:40:000
72409199476,22cyclictest30-21rcuc/223:55:022
724091994737,6cyclictest311ktimers/220:20:152
72409199473,29cyclictest30-21rcuc/219:50:012
724091994728,10cyclictest311ktimers/219:10:152
72408799475,9cyclictest12-21ksoftirqd/023:50:010
724091994632,8cyclictest0-21swapper/221:20:302
724091994626,12cyclictest311ktimers/219:20:142
724090994633,8cyclictest0-21swapper/121:35:291
72408799466,5cyclictest131ktimers/000:20:190
72408799465,16cyclictest15-21rcuc/000:05:020
724087994638,4cyclictest0-21swapper/023:30:000
72408799462,6cyclictest760796-21tail22:40:230
72408799461,39cyclictest0-21swapper/023:40:010
72409199457,23cyclictest30-21rcuc/200:05:022
72409199455,23cyclictest30-21rcuc/219:35:002
724091994538,4cyclictest777246-21grep00:15:302
72409099451,9cyclictest0-21swapper/123:30:011
72408799451,8cyclictest724338-21fschecks_count19:10:210
72408799448,9cyclictest0-21swapper/019:30:020
72408799448,9cyclictest0-21swapper/019:30:020
72408799444,18cyclictest12-21ksoftirqd/000:40:010
724087994437,4cyclictest167350irq/118-8000000.ethernet-tx020:30:190
724087994436,5cyclictest14-21rcu_preempt21:50:220
72408799442,5cyclictest778680-21meminfo00:25:240
72408799441,41cyclictest0-21swapper/021:15:100
72409199438,23cyclictest0-21swapper/200:40:012
724091994331,8cyclictest0-21swapper/222:40:262
724091994326,8cyclictest0-21swapper/220:15:302
724091994311,6cyclictest30-21rcuc/200:10:012
724091994311,17cyclictest758673-21/usr/sbin/munin22:30:202
724090994336,4cyclictest737100-21munin-run20:24:591
724090994335,5cyclictest0-21swapper/119:20:011
724090994333,7cyclictest750640-21grep21:40:291
724087994337,2cyclictest0-21swapper/019:50:210
72408799432,39cyclictest0-21swapper/023:40:190
72408799432,39cyclictest0-21swapper/023:00:220
72408799431,5cyclictest735974-21processes20:15:280
72408799431,40cyclictest0-21swapper/019:45:100
724091994226,12cyclictest311ktimers/223:30:122
724090994232,5cyclictest0-21swapper/123:05:281
724087994234,4cyclictest167350irq/118-8000000.ethernet-tx023:30:200
724087994214,6cyclictest131ktimers/020:00:160
724087994214,6cyclictest131ktimers/020:00:160
724090994133,5cyclictest764288-21unixbench_multi23:00:281
724090994132,4cyclictest0-21swapper/120:50:281
724090994129,7cyclictest0-21swapper/122:10:301
724090994126,9cyclictest0-21swapper/123:10:191
724090994120,11cyclictest0-21swapper/122:40:191
724087994134,5cyclictest131ktimers/021:55:150
724087994133,5cyclictest0-21swapper/000:30:340
724087994132,6cyclictest761790-21grep22:45:300
724087994132,5cyclictest754165-21latency_hist22:05:000
724087994132,5cyclictest0-21swapper/019:30:100
724087994126,13cyclictest0-21swapper/022:10:170
72408799411,4cyclictest15-21rcuc/023:00:010
72408799411,3cyclictest743854-21apt-get21:05:020
724091994032,4cyclictest740470-21cron20:45:012
724091994031,4cyclictest14-21rcu_preempt20:35:282
724091994026,10cyclictest0-21swapper/222:20:252
724090994032,5cyclictest0-21swapper/123:50:001
724090994025,8cyclictest0-21swapper/100:10:281
72408799402,36cyclictest0-21swapper/020:55:230
724087994023,11cyclictest131ktimers/020:45:110
72408799401,37cyclictest0-21swapper/020:40:140
724091993931,4cyclictest0-21swapper/222:45:302
724091993926,9cyclictest0-21swapper/221:10:262
724091993924,11cyclictest311ktimers/221:40:142
724091993915,11cyclictest311ktimers/219:40:112
72409099394,6cyclictest0-21swapper/122:40:011
72409099394,6cyclictest0-21swapper/122:40:001
724090993925,9cyclictest0-21swapper/120:05:281
724090993925,9cyclictest0-21swapper/119:30:191
72408799393,7cyclictest12-21ksoftirqd/022:25:020
724087993929,7cyclictest767794-21grep23:20:280
724087993929,7cyclictest767794-21grep23:20:270
72408799391,36cyclictest0-21swapper/022:15:120
72408799391,36cyclictest0-21swapper/020:20:260
724091993828,6cyclictest766952-21grep23:15:272
724091993826,8cyclictest732676-21grep19:55:272
724091993826,6cyclictest0-21swapper/223:00:192
72409199381,31cyclictest7415131/usr/sbin/munin20:50:262
724090993828,6cyclictest725046-21if_eth119:15:011
724090993826,8cyclictest732781-21sendmail20:00:011
724090993824,10cyclictest0-21swapper/119:50:201
724090993820,9cyclictest0-21swapper/100:30:381
72409099381,31cyclictest761212-21/usr/sbin/munin22:45:271
724087993831,4cyclictest0-21swapper/020:00:000
724087993831,3cyclictest734933-21grep20:10:220
724087993830,5cyclictest14-21rcu_preempt00:20:010
724087993814,14cyclictest15-21rcuc/022:25:160
72408799381,35cyclictest0-21swapper/021:45:240
72408799381,35cyclictest0-21swapper/020:30:000
72408799381,35cyclictest0-21swapper/019:20:220
72408799381,35cyclictest0-21swapper/019:15:110
72408799381,2cyclictest0-21swapper/023:15:020
724091993727,6cyclictest0-21swapper/222:05:282
724091993723,10cyclictest311ktimers/200:05:142
724090993729,5cyclictest0-21swapper/121:50:281
724090993728,6cyclictest0-21swapper/123:00:011
724090993726,6cyclictest0-21swapper/100:15:271
724087993732,3cyclictest0-21swapper/020:50:010
72408799371,4cyclictest0-21swapper/022:35:240
72408799371,4cyclictest0-21swapper/022:35:230
72408799371,34cyclictest0-21swapper/021:30:190
72408799371,34cyclictest0-21swapper/020:35:220
724091993626,5cyclictest0-21swapper/200:20:262
724091993623,7cyclictest770418-21grep23:35:282
724091993623,7cyclictest0-21swapper/221:45:192
724090993628,5cyclictest747236-21grep21:20:301
724090993627,6cyclictest1283-21cron21:00:001
724090993627,5cyclictest0-21swapper/121:05:001
724090993621,11cyclictest0-21swapper/121:05:201
72408799363,31cyclictest0-21swapper/021:20:240
724087993630,3cyclictest167350irq/118-8000000.ethernet-tx022:30:150
724087993629,4cyclictest167350irq/118-8000000.ethernet-tx023:55:210
724087993623,8cyclictest745516-21grep21:10:270
72408799361,4cyclictest776340-21xargs00:10:270
724091993527,5cyclictest724084-21cyclictest21:50:302
724091993526,5cyclictest0-21swapper/223:40:292
724091993524,7cyclictest0-21swapper/223:55:292
724091993517,12cyclictest311ktimers/223:20:102
724091993517,12cyclictest311ktimers/223:20:102
724091993517,12cyclictest311ktimers/219:15:122
724090993527,4cyclictest167450irq/126-8000000.ethernet-tx122:02:241
724090993527,4cyclictest0-21swapper/121:10:281
724090993525,5cyclictest0-21swapper/120:15:291
724090993525,4cyclictest0-21swapper/121:30:281
724090993524,4cyclictest0-21swapper/122:15:281
724090993521,9cyclictest0-21swapper/100:00:001
724090993521,10cyclictest0-21swapper/120:10:291
72409099351,4cyclictest0-21swapper/122:30:021
72409099351,13cyclictest0-21swapper/123:35:011
72408799351,32cyclictest0-21swapper/019:40:150
72408799351,2cyclictest0-21swapper/000:10:000
724091993425,5cyclictest0-21swapper/221:30:262
724091993425,4cyclictest0-21swapper/220:05:272
724090993424,7cyclictest0-21swapper/123:35:271
72409099341,27cyclictest0-21swapper/123:40:191
724091993326,4cyclictest0-21swapper/222:25:262
724091993325,3cyclictest0-21swapper/220:30:282
724091993319,9cyclictest0-21swapper/220:10:212
724091993316,11cyclictest311ktimers/222:00:122
724090993324,5cyclictest0-21swapper/119:20:291
724090993323,6cyclictest0-21swapper/119:45:251
724090993322,8cyclictest745988-21cut21:15:201
724087993328,3cyclictest0-21swapper/022:05:300
724091993224,4cyclictest0-21swapper/222:55:192
724091993223,6cyclictest0-21swapper/222:50:292
724091993223,5cyclictest0-21swapper/219:25:282
724091993223,5cyclictest0-21swapper/219:25:282
724091993222,6cyclictest0-21swapper/200:30:372
724091993221,6cyclictest742888-21tail20:55:282
724091993218,10cyclictest0-21swapper/223:30:012
724090993224,5cyclictest0-21swapper/119:25:291
724090993224,5cyclictest0-21swapper/119:25:291
724090993221,7cyclictest0-21swapper/122:05:171
724090993220,8cyclictest0-21swapper/120:30:261
724090993219,9cyclictest0-21swapper/119:40:231
72409099321,25cyclictest0-21swapper/122:20:221
724091993122,5cyclictest14-21rcu_preempt23:45:202
724091993118,10cyclictest0-21swapper/219:35:272
724090993119,8cyclictest231ktimers/120:25:111
724091993025,3cyclictest749357-21fschecks_time21:35:202
724091993020,7cyclictest0-21swapper/220:45:182
724090993018,8cyclictest0-21swapper/100:35:271
724090993017,8cyclictest0-21swapper/119:35:261
72409099301,26cyclictest747525-21/usr/sbin/munin21:25:231
724091992921,6cyclictest759513-21/usr/sbin/munin22:35:292
724091992921,6cyclictest759513-21/usr/sbin/munin22:35:292
724091992920,6cyclictest0-21swapper/219:50:252
724091992919,6cyclictest0-21swapper/222:15:182
724091992919,6cyclictest0-21swapper/220:25:302
724091992914,13cyclictest0-21swapper/220:05:012
724091992914,13cyclictest0-21swapper/220:05:002
724090992920,4cyclictest0-21swapper/121:55:271
72409099291,26cyclictest22-21rcuc/100:20:261
724091992822,4cyclictest766136-21dropbear23:11:012
724091992820,4cyclictest0-21swapper/219:10:012
724090992819,5cyclictest0-21swapper/123:20:261
724090992819,5cyclictest0-21swapper/123:20:261
724090992818,8cyclictest778999-21sshd00:26:501
724090992817,7cyclictest0-21swapper/120:40:291
72409099281,2cyclictest0-21swapper/122:35:001
72409099281,25cyclictest762051-21/usr/sbin/munin22:50:291
724090992811,9cyclictest0-21swapper/100:10:011
724091992720,4cyclictest0-21swapper/221:05:222
724090992719,5cyclictest231ktimers/120:45:231
724090992717,6cyclictest0-21swapper/120:35:221
724087992614,6cyclictest0-21swapper/019:10:000
724090992416,4cyclictest0-21swapper/123:18:491
72409099208,5cyclictest0-21swapper/119:10:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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