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2026-06-27 - 09:00

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 all highest latencies:
System rackeslot6s.osadl.org (updated Sat Jun 27, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3460965997640,29cyclictest3469562-21unixbench_multi19:55:301
3460965997640,29cyclictest3469562-21unixbench_multi19:55:301
346096599762,7cyclictest3478395-21/usr/sbin/munin20:50:181
3460965996911,19cyclictest3468172-21/usr/sbin/munin19:50:171
3460962996916,15cyclictest15-21rcuc/020:25:010
3460962996916,15cyclictest15-21rcuc/020:25:010
3460965996641,19cyclictest3490022-21sendmail22:00:001
3460965996622,35cyclictest0-21swapper/122:30:271
3460962996647,16cyclictest15-21rcuc/020:55:130
346096699643,21cyclictest0-21swapper/222:40:022
3460965996413,40cyclictest0-21swapper/121:20:011
346096599631,9cyclictest0-21swapper/122:00:011
3460965996319,36cyclictest0-21swapper/120:15:291
346096599613,16cyclictest3501380-21apt-get23:05:151
346096599613,10cyclictest3466165-21grep19:35:291
3460965996126,29cyclictest0-21swapper/123:15:171
3460965996126,27cyclictest0-21swapper/119:45:281
3460965996112,6cyclictest0-21swapper/123:40:181
3460965996111,9cyclictest3513071-21kworker/u8:3+events_power_efficient00:15:001
3460965996023,30cyclictest0-21swapper/120:55:281
346096599595,15cyclictest3505304-21sed23:25:291
346096599592,13cyclictest3465332-21tail19:30:281
3460965995917,32cyclictest0-21swapper/121:45:281
3460965995917,32cyclictest0-21swapper/121:45:271
3460965995914,35cyclictest0-21swapper/122:40:281
346096599582,42cyclictest3481272-21cut21:05:251
346096599582,42cyclictest3481272-21cut21:05:241
346096599582,15cyclictest3517282-21sed00:35:271
3460965995819,30cyclictest3508824-21sed23:45:271
3460965995818,30cyclictest0-21swapper/122:45:281
3460965995818,30cyclictest0-21swapper/122:45:281
3460965995712,34cyclictest0-21swapper/121:25:281
346096299572,51cyclictest3506147-21unixbench_multi23:30:280
3460965995626,23cyclictest0-21swapper/120:45:281
346096599554,10cyclictest3488962-21ptp4l-jitter21:50:261
346096599553,10cyclictest3512143-21tail00:05:291
346096599553,10cyclictest3512143-21tail00:05:291
3460965995518,26cyclictest0-21swapper/121:30:261
3460965995516,32cyclictest0-21swapper/123:30:261
3460965995516,31cyclictest0-21swapper/120:05:151
3460965995516,31cyclictest0-21swapper/100:15:211
3460965995514,34cyclictest0-21swapper/122:15:271
3460965995513,32cyclictest0-21swapper/122:35:271
3460966995442,8cyclictest0-21swapper/223:30:002
346096599542,9cyclictest3463650-21grep19:20:281
3460965995424,25cyclictest1653-21lldpd20:25:251
3460965995424,25cyclictest1653-21lldpd20:25:241
346096599542,13cyclictest3516467-21cron00:35:001
3460965995418,26cyclictest0-21swapper/123:10:251
3460965995417,30cyclictest0-21swapper/121:20:201
346096599541,11cyclictest3475590-21grep20:30:311
3460965995410,8cyclictest0-21swapper/123:00:191
346096599533,11cyclictest3514391-21/usr/sbin/munin00:20:211
346096599533,11cyclictest3506786-21phc2sys-jitter23:35:251
346096599533,11cyclictest3471991-21phc2sys-jitter20:10:261
346096599531,13cyclictest3461053-21latency_hist19:10:021
3460965995310,4cyclictest3470029-21grep20:00:201
346096299531,48cyclictest0-21swapper/000:15:230
346096599528,33cyclictest0-21swapper/119:40:281
346096599522,9cyclictest3510686-21cat00:00:011
346096599522,12cyclictest3487042-21fschecks_time21:40:211
346096599518,11cyclictest0-21swapper/121:35:281
346096599514,7cyclictest3476392-21grep20:35:291
346096599513,12cyclictest3477240-21grep20:40:291
346096599513,10cyclictest3491720-21unixbench_multi22:05:321
346096599512,9cyclictest3494333-21tail22:20:281
3460965995124,24cyclictest3500327-21cut23:00:001
346096599512,14cyclictest3515170-21fschecks_time00:25:221
346096599512,10cyclictest3462411-21lsblk19:15:211
346096599512,10cyclictest3462411-21lsblk19:15:201
3460965995115,30cyclictest0-21swapper/121:15:011
3460965995114,2cyclictest1650-21lldpd19:25:161
3460962995142,5cyclictest167350irq/118-8000000.ethernet-tx000:00:140
346096599503,7cyclictest3509482-21ptp4l23:50:271
3460965995025,20cyclictest1283-21cron22:55:001
3460965995014,31cyclictest0-21swapper/121:00:151
3460966994942,4cyclictest3513926-21munin-plugin-st00:20:002
3460966994931,12cyclictest311ktimers/219:45:142
346096599496,8cyclictest3495170-21grep22:25:291
3460965994910,4cyclictest0-21swapper/120:20:211
346096299493,5cyclictest3514679-21sed00:20:270
3460962994918,15cyclictest131ktimers/022:35:010
346096599482,7cyclictest3461666-21tail19:10:271
346096599482,13cyclictest3504443-21tail23:20:281
346096599481,10cyclictest3492596-21grep22:10:291
3460962994837,5cyclictest3478005-21sendmail_mailqu20:45:270
3460962994827,19cyclictest0-21swapper/021:30:190
3460966994733,9cyclictest0-21swapper/222:20:012
3460962994742,4cyclictest0-21swapper/021:20:110
3460962994740,4cyclictest167350irq/118-8000000.ethernet-tx022:25:210
346096299472,4cyclictest3503653-21grep23:15:280
3460966994634,8cyclictest0-21swapper/220:55:002
346096599469,6cyclictest0-21swapper/100:00:201
3460962994638,4cyclictest167350irq/118-8000000.ethernet-tx019:15:190
3460962994638,4cyclictest167350irq/118-8000000.ethernet-tx019:15:180
3460962994636,6cyclictest20850irq/208-8000000.ethernet23:00:290
346096299461,6cyclictest3486629-21sh21:40:010
346096699457,3cyclictest0-21swapper/222:45:012
3460966994534,8cyclictest3462903-21sendmail19:20:002
3460966994534,8cyclictest3462903-21sendmail19:20:002
3460962994538,4cyclictest167350irq/118-8000000.ethernet-tx021:00:190
3460962994533,8cyclictest131ktimers/022:20:110
346096299452,6cyclictest3490498-21kernelversion22:00:240
3460966994429,12cyclictest30-21rcuc/219:10:182
3460966994427,13cyclictest311ktimers/221:15:112
3460962994436,4cyclictest3505518-21latency_hist23:30:010
3460962994425,15cyclictest3491420-21irqstats22:05:270
346096299442,4cyclictest3473642-21meminfo20:20:230
346096699431,17cyclictest0-21swapper/200:10:012
346096699431,17cyclictest0-21swapper/200:10:012
3460962994337,3cyclictest167350irq/118-8000000.ethernet-tx022:35:200
3460962994335,5cyclictest3488334-21munin-plugin-st21:50:000
3460962994335,5cyclictest3488334-21munin-plugin-st21:50:000
3460962994334,5cyclictest3464083-21fschecks_time19:25:220
346096299432,6cyclictest3471443-21munin-run20:10:000
346096299432,5cyclictest3501992-21users23:05:290
346096299432,5cyclictest3466091-21/usr/sbin/munin19:35:280
346096299431,39cyclictest3502858-21pluginstate23:15:010
346096299431,36cyclictest0-21swapper/022:55:010
3460966994234,4cyclictest0-21swapper/222:05:322
3460966994232,5cyclictest0-21swapper/221:00:282
3460966994222,16cyclictest311ktimers/220:20:132
3460962994236,3cyclictest0-21swapper/021:50:180
346096299423,3cyclictest3516466-21cron00:35:000
346096299421,4cyclictest3476781-21df_inode20:40:160
346096299421,39cyclictest0-21swapper/020:17:210
3460962994212,27cyclictest0-21swapper/020:35:270
3460962994135,3cyclictest20650irq/252-8000000.ethernet19:10:150
3460962994133,6cyclictest15-21rcuc/020:50:250
346096299412,5cyclictest3489770-21/usr/sbin/munin21:55:280
346096299412,4cyclictest3467104-21users19:40:300
346096299411,5cyclictest3465054-21irqstats19:30:230
346096299411,4cyclictest3463753-21munin-run19:24:590
346096299411,37cyclictest3469575-21unixbench_singl19:55:300
346096299411,37cyclictest3469575-21unixbench_singl19:55:290
346096299410,38cyclictest14-21rcu_preempt21:30:010
3460966994033,4cyclictest3507021-21grep23:35:272
3460966994031,7cyclictest311ktimers/220:55:112
3460962994033,3cyclictest20650irq/252-8000000.ethernet00:10:180
3460962994032,5cyclictest0-21swapper/023:40:260
3460962994030,7cyclictest3468021-21latency_hist19:50:010
3460962994027,9cyclictest3517313-21latency_hist00:40:000
346096299401,5cyclictest0-21swapper/021:40:170
346096299401,12cyclictest3480934-21apt-get21:05:150
346096299401,12cyclictest3480934-21apt-get21:05:150
3460966993932,4cyclictest0-21swapper/222:00:292
3460966993927,9cyclictest3466283-21sendmail19:39:592
3460962993931,4cyclictest167350irq/118-8000000.ethernet-tx000:25:220
3460962993926,9cyclictest0-21swapper/023:50:280
3460966993830,5cyclictest3507936-21munin-plugin-st23:45:002
3460966993829,5cyclictest0-21swapper/223:10:282
3460966993826,5cyclictest3485744-21grep21:30:282
3460966993825,9cyclictest0-21swapper/223:20:262
3460962993831,5cyclictest0-21swapper/022:55:190
3460962993831,4cyclictest0-21swapper/023:55:120
346096299381,3cyclictest0-21swapper/021:15:280
346096299381,35cyclictest0-21swapper/021:14:210
3460966993731,4cyclictest3510556-21sendmail00:00:002
3460966993727,7cyclictest0-21swapper/219:25:302
3460966993725,9cyclictest0-21swapper/200:25:002
3460966993725,8cyclictest0-21swapper/221:05:282
3460966993725,8cyclictest0-21swapper/221:05:282
3460966993725,7cyclictest0-21swapper/221:55:212
3460966993712,17cyclictest167550irq/134-8000000.ethernet-tx222:55:162
3460962993731,4cyclictest20850irq/208-8000000.ethernet00:05:300
3460962993731,4cyclictest20850irq/208-8000000.ethernet00:05:300
3460962993730,4cyclictest0-21swapper/022:10:250
3460966993628,4cyclictest14-21rcu_preempt21:40:262
3460966993627,5cyclictest0-21swapper/220:15:272
3460966993627,5cyclictest0-21swapper/219:50:282
3460966993626,8cyclictest0-21swapper/220:05:002
3460966993625,6cyclictest0-21swapper/200:00:302
3460966993624,8cyclictest0-21swapper/222:20:282
3460966993620,11cyclictest311ktimers/221:20:122
3460966993612,17cyclictest167550irq/134-8000000.ethernet-tx221:35:122
3460962993631,3cyclictest20850irq/208-8000000.ethernet22:45:160
3460962993631,3cyclictest20850irq/208-8000000.ethernet22:45:160
346096299362,9cyclictest3475784-21latency_hist20:35:010
3460962993629,4cyclictest3507092-21sendmail23:40:000
346096299361,33cyclictest0-21swapper/022:15:220
346096299361,33cyclictest0-21swapper/020:03:370
3460966993527,5cyclictest3465344-21grep19:30:282
3460966993526,6cyclictest3495159-21grep22:25:292
3460962993529,4cyclictest0-21swapper/023:20:210
3460962993527,5cyclictest3472276-21cron20:15:000
346096299351,32cyclictest0-21swapper/019:50:420
3460966993429,2cyclictest0-21swapper/200:10:212
3460966993427,4cyclictest14-21rcu_preempt20:00:012
3460966993427,4cyclictest14-21rcu_preempt20:00:012
3460966993425,4cyclictest0-21swapper/223:15:282
3460966993424,6cyclictest0-21swapper/221:45:292
3460966993424,6cyclictest0-21swapper/221:45:292
346096699341,27cyclictest0-21swapper/220:35:172
346096299341,31cyclictest0-21swapper/023:47:310
346096699333,24cyclictest32-21ksoftirqd/219:20:132
3460966993325,5cyclictest311ktimers/222:50:212
3460966993324,6cyclictest0-21swapper/223:30:272
3460966993317,8cyclictest0-21swapper/223:55:012
346096299331,4cyclictest3497764-21unixbench_singl22:40:280
346096699326,13cyclictest3515820-21/usr/sbin/munin00:30:182
3460966993224,4cyclictest14-21rcu_preempt21:25:222
3460966993224,4cyclictest0-21swapper/219:40:292
3460966993124,5cyclictest3481771-21/usr/sbin/munin21:10:242
3460966993123,4cyclictest0-21swapper/222:45:192
3460966993123,4cyclictest0-21swapper/222:45:192
3460966993122,4cyclictest0-21swapper/220:05:102
3460966993121,7cyclictest0-21swapper/223:00:292
346096699311,28cyclictest0-21swapper/220:45:172
3460966993112,17cyclictest167550irq/134-8000000.ethernet-tx220:31:212
3460966993112,13cyclictest167550irq/134-8000000.ethernet-tx223:48:212
3460966993110,14cyclictest167550irq/134-8000000.ethernet-tx200:28:252
346096299311,27cyclictest3446604-1kworker/0:2H+kblockd19:10:010
3460966993020,7cyclictest0-21swapper/200:35:272
346096699298,14cyclictest167550irq/134-8000000.ethernet-tx223:05:112
3460966992921,3cyclictest0-21swapper/221:50:202
3460966992918,8cyclictest0-21swapper/220:40:292
3460966992820,6cyclictest3474181-21/usr/sbin/munin20:25:222
3460966992820,6cyclictest3474181-21/usr/sbin/munin20:25:222
3460966992818,6cyclictest30-21rcuc/222:10:292
3460966992720,5cyclictest311ktimers/220:10:122
3460966992620,4cyclictest30-21rcuc/222:30:202
346096699229,7cyclictest0-21swapper/219:10:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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