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2026-04-25 - 03:55

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 Sat Apr 25, 2026 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
531625994938,7cyclictest631626-21grep23:55:261
531630994716,7cyclictest131rcu_preempt23:20:132
531622994737,6cyclictest572852-21grep21:05:240
531630994437,5cyclictest590329-21kworker/u8:2+events_unbound23:32:152
531636994232,6cyclictest587142-21ls21:50:003
531630994235,4cyclictest618241-21apt23:20:012
531630994233,5cyclictest547856-21runrttasks19:55:002
531630994027,9cyclictest595178-21grep22:10:242
531622994031,4cyclictest0-21swapper/019:56:480
531622994031,4cyclictest0-21swapper/019:56:480
531630993929,6cyclictest579843-21grep21:25:252
531630993831,5cyclictest599639-21kworker/u8:3+events_unbound22:27:072
531630993831,5cyclictest533068-21kworker/u8:2+events_unbound19:11:412
531630993831,3cyclictest0-21swapper/222:20:002
531630993830,5cyclictest611225-21sendmail23:00:002
531630993830,5cyclictest611225-21sendmail23:00:002
531630993828,7cyclictest311ktimers/220:55:122
531630993827,9cyclictest311ktimers/221:10:122
531622993828,6cyclictest0-21swapper/020:30:160
531622993827,7cyclictest619552-21grep23:20:260
531636993729,4cyclictest0-21swapper/300:35:233
531636993729,4cyclictest0-21swapper/300:35:223
531625993729,4cyclictest0-21swapper/121:25:161
531636993627,6cyclictest0-21swapper/323:34:593
531636993627,5cyclictest0-21swapper/323:35:253
531630993628,4cyclictest0-21swapper/200:35:162
531630993628,4cyclictest0-21swapper/200:35:162
531630993625,7cyclictest554653-21latency_hist20:15:002
531625993628,4cyclictest0-21swapper/121:10:241
531625993624,9cyclictest549409-21idleruntime-cro20:00:011
531625993624,9cyclictest549409-21idleruntime-cro20:00:001
531622993629,4cyclictest556217-21cron20:20:010
531636993525,6cyclictest0-21swapper/323:00:003
531636993525,6cyclictest0-21swapper/323:00:003
531630993527,4cyclictest0-21swapper/222:00:162
531630993527,4cyclictest0-21swapper/221:50:262
531630993523,9cyclictest585436-21auditctl21:45:012
531625993527,4cyclictest0-21swapper/120:05:161
531625993526,4cyclictest0-21swapper/121:36:581
531625993523,8cyclictest573281-21cron21:10:001
531622993528,4cyclictest611211-21cut23:00:000
531622993528,4cyclictest611211-21cut22:59:590
531622993527,5cyclictest599085-21munin-plugin-st22:25:000
531636993427,5cyclictest637255-21kworker/u8:2+events_unbound00:28:443
531636993427,4cyclictest0-21swapper/321:10:013
531636993424,5cyclictest0-21swapper/321:19:593
531630993426,5cyclictest637427-21debian-sa100:15:002
531630993426,3cyclictest0-21swapper/223:35:152
531630993425,6cyclictest599332-21grep22:25:002
531625993426,4cyclictest0-21swapper/122:00:011
531625993426,4cyclictest0-21swapper/121:20:001
531622993426,4cyclictest580323-21ls21:30:010
531622993422,9cyclictest597363-21sendmail22:19:590
531622993421,8cyclictest616533-21sh23:15:010
531636993325,6cyclictest3625796-21kworker/u8:1+events_unbound19:40:243
531630993327,4cyclictest550757-21kworker/u8:3+events_unbound20:26:542
531630993325,4cyclictest0-21swapper/223:25:162
531630993324,6cyclictest566008-21grep20:45:272
531630993322,7cyclictest0-21swapper/219:40:262
53162299334,4cyclictest6048472cut22:40:150
531636993226,4cyclictest616245-21kworker/u8:1+events_unbound23:12:123
531636993224,4cyclictest0-21swapper/322:40:153
531636993224,4cyclictest0-21swapper/320:05:263
531636993224,4cyclictest0-21swapper/319:25:163
531636993223,6cyclictest0-21swapper/300:05:013
531636993220,8cyclictest542143-21grep19:35:253
53163099325,8cyclictest32-21ksoftirqd/220:00:122
53163099325,8cyclictest32-21ksoftirqd/220:00:122
531630993225,4cyclictest0-21swapper/220:35:252
531630993220,8cyclictest573276-21auditctl21:10:012
531630993215,5cyclictest633980-21kworker/u8:0+events_unbound00:07:492
531625993224,4cyclictest0-21swapper/123:25:251
531625993222,6cyclictest0-21swapper/123:05:251
531622993225,3cyclictest0-21swapper/019:45:000
531622993221,7cyclictest0-21swapper/019:10:250
531636993123,4cyclictest0-21swapper/319:10:253
531636993123,4cyclictest0-21swapper/300:30:263
531636993123,4cyclictest0-21swapper/300:30:263
531636993121,7cyclictest0-21swapper/300:00:003
531636993116,11cyclictest391ktimers/321:50:123
531630993123,4cyclictest0-21swapper/223:10:222
531630993122,6cyclictest0-21swapper/221:00:242
531625993120,8cyclictest606113-21grep22:45:011
531622993124,4cyclictest0-21swapper/023:30:100
531636993022,5cyclictest0-21swapper/323:20:013
531636993022,4cyclictest0-21swapper/319:20:163
53163099302,4cyclictest131rcu_preempt00:25:132
531630993020,6cyclictest0-21swapper/220:40:252
531625993022,4cyclictest0-21swapper/123:35:001
531625993021,5cyclictest607408-21unixbench_singl22:45:281
531625993021,5cyclictest0-21swapper/123:20:151
531625993018,9cyclictest231ktimers/119:35:111
53162299309,3cyclictest577215-21cat21:20:110
531622993023,3cyclictest0-21swapper/023:50:240
531622993022,4cyclictest0-21swapper/019:30:250
531636992922,3cyclictest0-21swapper/300:10:163
531636992921,4cyclictest0-21swapper/320:30:163
531636992921,4cyclictest0-21swapper/320:10:263
531636992918,8cyclictest635725-21sh00:10:003
531630992923,3cyclictest0-21swapper/219:30:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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