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2026-03-25 - 23:36

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 Wed Mar 25, 2026 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3240230995137,9cyclictest391ktimers/309:10:133
3240230994837,8cyclictest3250979-21apt-get07:40:003
3240228994840,5cyclictest3351596-21grep12:30:002
3240230994735,9cyclictest391ktimers/308:50:153
3240230994735,9cyclictest391ktimers/308:50:153
3240219994739,4cyclictest0-21swapper/008:45:000
3240219994737,7cyclictest3257813-21unixbench_singl07:55:240
3240219994637,6cyclictest3337333-21grep11:45:250
3240219994332,6cyclictest3248877-21grep07:30:240
3240219994316,5cyclictest131rcu_preempt08:00:120
3240223994233,5cyclictest0-21swapper/112:40:011
3240223994233,4cyclictest0-21swapper/109:15:221
3240230994132,5cyclictest3332138-21unixbench_multi11:30:233
3240230994129,4cyclictest3278877-21kworker/u8:3+events_unbound09:39:033
3240230994031,6cyclictest3354982-21cron12:40:003
3240228994029,6cyclictest0-21swapper/208:40:012
3240223994032,5cyclictest3301507-21munin-plugin-st10:05:011
3240223994032,5cyclictest3301507-21munin-plugin-st10:05:001
3240219994032,4cyclictest0-21swapper/008:50:010
3240219994015,7cyclictest131rcu_preempt10:45:120
3240219994015,7cyclictest131rcu_preempt10:45:110
3240230993926,8cyclictest0-21swapper/308:00:193
3240228993929,6cyclictest0-21swapper/211:20:242
3240228993920,7cyclictest3239792-21kworker/u8:0+events_unbound07:22:392
3240223993931,4cyclictest0-21swapper/107:25:231
3240223993926,8cyclictest3306834-21sendmail10:20:011
3240219993933,4cyclictest3296011-21kworker/u8:2+events_unbound09:54:050
3240219993931,5cyclictest3270166-21idleruntime-cro08:35:000
3240230993829,4cyclictest0-21swapper/308:23:533
3240230993828,6cyclictest0-21swapper/308:35:003
3240230993827,5cyclictest0-21swapper/311:05:143
3240230993826,7cyclictest3304660-21grep10:10:253
3240228993828,6cyclictest3333890-21grep11:35:232
3240228993828,6cyclictest0-21swapper/210:05:252
3240223993824,10cyclictest231ktimers/108:40:121
324021999387,20cyclictest131rcu_preempt12:40:010
3240219993831,5cyclictest3271847-21kworker/u8:1+events_unbound09:49:040
3240219993830,6cyclictest3333892-21unixbench_singl11:35:230
3240219993829,6cyclictest3332611-21debian-sa111:35:000
3240230993730,5cyclictest3332475-21kworker/u8:0+events_unbound12:08:413
3240230993728,6cyclictest0-21swapper/307:25:013
3240228993729,4cyclictest0-21swapper/209:30:012
3240228993728,6cyclictest3306363-21grep10:15:262
3240228993727,7cyclictest3251026-21latency_hist07:40:022
3240228993721,4cyclictest3255042-21kworker/u8:4+events_unbound08:32:412
3240219993727,4cyclictest3278877-21kworker/u8:3+events_unbound10:02:410
3240219993727,4cyclictest3278877-21kworker/u8:3+events_unbound10:02:410
3240219993725,7cyclictest0-21swapper/010:55:230
3240230993628,4cyclictest0-21swapper/309:45:013
3240230993625,6cyclictest0-21swapper/308:45:263
3240230993624,9cyclictest391ktimers/310:25:143
3240228993628,5cyclictest3349441-21unixbench_multi12:20:252
3240228993628,5cyclictest0-21swapper/209:14:592
3240228993628,4cyclictest3308738-21sed10:25:012
3240228993628,4cyclictest0-21swapper/210:25:162
3240228993627,6cyclictest0-21swapper/208:20:002
3240223993628,4cyclictest0-21swapper/109:55:001
3240223993627,4cyclictest0-21swapper/107:40:011
3240223993626,7cyclictest3251575-21fschecks_count07:40:161
3240219993629,4cyclictest0-21swapper/011:10:110
3240219993628,4cyclictest0-21swapper/008:15:010
3240219993617,5cyclictest3342906-21kworker/u8:3+events_unbound12:14:410
3240230993526,6cyclictest3347697-21unixbench_multi12:15:253
3240230993526,6cyclictest3347697-21unixbench_multi12:15:253
3240228993527,4cyclictest0-21swapper/211:25:142
3240219993527,4cyclictest0-21swapper/009:45:020
3240219993527,4cyclictest0-21swapper/009:34:000
3240219993527,4cyclictest0-21swapper/009:00:000
3240219993527,4cyclictest0-21swapper/009:00:000
3240219993526,5cyclictest3308527-21cron10:25:010
3240219993524,8cyclictest3353242-21sshd12:34:350
3240219993513,4cyclictest131rcu_preempt10:05:160
3240219993511,3cyclictest32538262gunzip07:45:240
3240219993510,12cyclictest131rcu_preempt10:30:230
3240230993426,4cyclictest3252921-21munin-plugin-st07:45:003
3240230993424,6cyclictest0-21swapper/310:15:253
3240228993427,3cyclictest0-21swapper/208:10:252
3240228993426,4cyclictest0-21swapper/209:20:002
3240223993426,4cyclictest3244162-21kthreadd07:20:001
3240223993426,4cyclictest0-21swapper/110:05:141
3240223993424,7cyclictest3308526-21cron10:25:011
3240223993424,6cyclictest0-21swapper/109:55:241
324021999343,20cyclictest3306856-21cat10:20:000
3240219993414,5cyclictest3322102-21kworker/u8:3-events_unbound11:26:420
3240230993325,4cyclictest0-21swapper/312:10:263
3240230993325,4cyclictest0-21swapper/311:45:253
3240230993324,5cyclictest0-21swapper/307:30:243
3240230993323,6cyclictest0-21swapper/312:29:343
3240230993320,5cyclictest3324539-21kworker/u8:0+events_unbound11:24:293
3240228993326,4cyclictest0-21swapper/211:40:232
3240228993326,4cyclictest0-21swapper/208:05:152
3240228993325,4cyclictest0-21swapper/207:50:252
3240228993324,6cyclictest0-21swapper/208:50:002
3240228993317,6cyclictest3271847-21kworker/u8:1+events_unbound09:05:592
3240228993316,6cyclictest3291899-21kworker/u8:0+events_unbound09:45:062
3240223993322,7cyclictest0-21swapper/107:45:251
3240223993320,9cyclictest231ktimers/107:20:131
3240219993321,8cyclictest3247575-21cron07:30:000
3240230993223,6cyclictest0-21swapper/309:00:013
3240230993223,6cyclictest0-21swapper/309:00:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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