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2026-03-19 - 12:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot5s.osadl.org (updated Thu Mar 19, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2725341995726,27cyclictest2798779-21cron22:40:010
2725341995318,31cyclictest438-21cron23:50:000
272534199514,12cyclictest13550irq/42-30be0000.ethernet21:35:100
272534199514,12cyclictest13550irq/42-30be0000.ethernet21:35:100
2725346995041,6cyclictest2753320-21kworker/u8:1+events_unbound20:50:201
2725350994937,9cyclictest311ktimers/220:20:122
2725350994737,6cyclictest2766963-21grep21:05:252
2725350994538,5cyclictest2775783-21kworker/u8:2+events_unbound21:50:332
2725346994532,9cyclictest2784712-21sh22:00:011
272534199459,9cyclictest204-21dbus-daemon00:03:420
2725346994437,4cyclictest2734407-21munin-plugin-st19:35:011
2725341994417,24cyclictest0-21swapper/022:25:260
2725350994334,6cyclictest2791969-21sendmail22:20:002
2725346994233,6cyclictest231ktimers/123:15:111
2725346994233,6cyclictest1-21systemd20:15:141
2725355994130,7cyclictest2804479-21fschecks_count22:55:153
2725346994132,6cyclictest231ktimers/119:25:131
2725341994032,4cyclictest0-21swapper/023:55:000
2725341994028,7cyclictest0-21swapper/021:25:270
2725341994028,7cyclictest0-21swapper/021:25:270
272534199401,14cyclictest2738024-21cron19:45:010
2725355993928,7cyclictest0-21swapper/319:20:003
2725355993928,7cyclictest0-21swapper/319:20:003
2725355993928,6cyclictest0-21swapper/320:00:113
2725350993931,4cyclictest0-21swapper/221:10:262
2725350993929,6cyclictest0-21swapper/220:05:012
2725346993931,4cyclictest2747218-21fschecks_time20:10:171
2725341993932,4cyclictest2819457-21cron23:40:000
2725341993932,4cyclictest2819457-21cron23:40:000
2725355993829,6cyclictest2817333-21unixbench_singl23:30:253
2725355993829,6cyclictest2817333-21unixbench_singl23:30:253
2725350993830,4cyclictest0-21swapper/200:00:002
2725350993826,6cyclictest0-21swapper/221:55:242
2725346993829,5cyclictest0-21swapper/119:25:001
2725341993818,3cyclictest13550irq/42-30be0000.ethernet22:10:110
2725355993725,8cyclictest2750188-21sendmail20:20:003
2725346993726,8cyclictest2818989-21grep23:35:261
2725346993726,8cyclictest2818989-21grep23:35:251
2725341993728,6cyclictest2800491-21debian-sa122:45:010
272534199370,21cyclictest0-21swapper/021:02:460
2725355993629,4cyclictest2746562-21munin-plugin-st20:10:013
2725355993629,4cyclictest0-21swapper/300:20:003
2725355993626,7cyclictest2777670-21sh21:40:003
2725355993626,7cyclictest2777670-21sh21:40:003
2725350993617,7cyclictest131rcu_preempt22:25:002
2725341993628,4cyclictest0-21swapper/021:10:260
2725355993524,7cyclictest0-21swapper/319:35:243
272535099354,7cyclictest32-21ksoftirqd/220:50:012
2725350993518,14cyclictest311ktimers/221:48:172
2725350993517,15cyclictest311ktimers/223:20:332
2725346993526,5cyclictest0-21swapper/123:50:231
2725346993524,8cyclictest2803921-21gpgv22:55:011
2725341993527,4cyclictest0-21swapper/023:55:250
2725350993424,8cyclictest2753583-21cron20:30:002
2725350993424,8cyclictest2753583-21cron20:30:002
2725350993424,4cyclictest131rcu_preempt22:40:122
2725350993424,4cyclictest131rcu_preempt19:16:112
2725350993424,4cyclictest131rcu_preempt19:16:112
2725350993423,7cyclictest2743136-21auditctl20:00:012
2725346993424,5cyclictest0-21swapper/123:00:251
2725341993427,4cyclictest2767432-21cron21:10:000
272534199340,31cyclictest0-21swapper/000:20:110
2725355993325,4cyclictest0-21swapper/321:45:163
2725355993325,4cyclictest0-21swapper/320:20:153
272535099336,5cyclictest32-21ksoftirqd/200:25:222
2725350993325,4cyclictest0-21swapper/222:10:002
2725350993325,4cyclictest0-21swapper/200:40:002
2725350993324,6cyclictest2731448-21fschecks_time19:25:162
2725350993323,7cyclictest311ktimers/222:55:162
2725350993323,6cyclictest0-21swapper/222:15:012
2725350993315,6cyclictest131rcu_preempt22:25:122
2725350993315,3cyclictest131rcu_preempt23:30:172
2725350993315,3cyclictest131rcu_preempt23:30:162
2725350993313,8cyclictest2747559-21ntpq20:10:222
2725346993327,4cyclictest2753320-21kworker/u8:1+events_unbound20:35:191
2725346993326,5cyclictest2753320-21kworker/u8:1+events_unbound20:45:201
2725346993325,4cyclictest0-21swapper/120:30:231
2725346993325,3cyclictest0-21swapper/123:45:241
2725346993320,9cyclictest204-21dbus-daemon19:15:041
2725346993320,9cyclictest204-21dbus-daemon19:15:031
2725355993223,6cyclictest0-21swapper/323:25:003
272535099325,7cyclictest32-21ksoftirqd/223:40:012
272535099325,7cyclictest32-21ksoftirqd/223:40:012
2725350993224,4cyclictest0-21swapper/223:15:012
2725350993222,7cyclictest311ktimers/222:45:242
2725350993217,3cyclictest131rcu_preempt00:10:152
2725350993216,3cyclictest131rcu_preempt20:40:212
2725350993216,10cyclictest131rcu_preempt20:15:212
2725350993214,10cyclictest131rcu_preempt19:45:202
2725346993226,4cyclictest2786311-21kworker/u8:3+events_unbound22:05:351
2725346993224,4cyclictest0-21swapper/123:20:241
2725346993222,7cyclictest2741427-21sh19:55:011
2725346993221,7cyclictest2801711-21grep22:45:251
2725341993226,4cyclictest2743146-21munin-plugin-st20:00:010
2725341993225,4cyclictest2793668-21sh22:25:000
2725341993224,5cyclictest2757028-21idleruntime-cro20:40:000
2725355993123,4cyclictest0-21swapper/322:30:243
2725355993121,6cyclictest0-21swapper/300:05:233
272535099319,6cyclictest32-21ksoftirqd/219:15:002
272535099319,14cyclictest32-21ksoftirqd/219:40:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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