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2026-05-18 - 11:13

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 Mon May 18, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3073892995746,8cyclictest3180941-21kworker/u8:2+events_unbound00:30:140
3073906995339,8cyclictest391ktimers/321:10:143
3073906995238,10cyclictest391ktimers/321:35:143
3073906995140,7cyclictest3145779-21grep22:35:233
3073897994833,4cyclictest3080923-21kworker/u8:0+events_unbound19:26:311
3073897994735,7cyclictest3127098-21grep21:40:271
3073901994417,14cyclictest131rcu_preempt22:55:132
3073892994335,4cyclictest3132618-21munin-plugin-st22:00:000
3073897994231,7cyclictest3122396-21latency_hist21:30:011
3073897994230,8cyclictest3144129-21grep22:30:261
3073897994214,6cyclictest31063712sed20:40:261
3073892994234,4cyclictest3105124-21sendmail20:40:010
3073897994133,6cyclictest3142725-21kworker/u8:0+events_unbound22:52:011
3073897994031,6cyclictest3098726-21fschecks_count20:20:181
307389799402,10cyclictest24-21ksoftirqd/120:45:131
3073897993928,7cyclictest3102943-21grep20:30:261
3073892993931,4cyclictest0-21swapper/023:10:000
3073892993929,6cyclictest3142388-21unixbench_multi22:25:250
3073892993928,8cyclictest3075608-21munin-node19:15:010
3073901993830,4cyclictest0-21swapper/221:45:002
3073901993826,8cyclictest311ktimers/220:10:122
3073897993829,6cyclictest3110226-21cron20:55:001
3073897993818,6cyclictest3156491-21kworker/u8:0+events_unbound23:30:211
3073892993830,4cyclictest0-21swapper/023:35:000
3073901993726,8cyclictest3130482-21grep21:50:272
307389799379,6cyclictest131rcu_preempt22:25:121
3073906993628,5cyclictest0-21swapper/323:40:003
3073906993625,7cyclictest3131329-21fschecks_time21:55:163
3073901993629,3cyclictest0-21swapper/222:50:002
3073901993626,7cyclictest3163331-21grep23:25:252
3073897993625,6cyclictest3170773-21ls23:50:011
3073897993623,9cyclictest3105110-21sh20:40:011
3073897993620,11cyclictest3160241-21apt-config23:20:001
3073892993627,4cyclictest0-21swapper/020:30:260
3073892993626,6cyclictest0-21swapper/020:40:260
3073906993527,5cyclictest3161577-21unixbench_multi23:20:253
3073901993528,3cyclictest0-21swapper/200:40:002
3073901993527,4cyclictest0-21swapper/221:16:402
3073901993511,5cyclictest131rcu_preempt20:35:132
307389799354,11cyclictest31571132grep23:10:171
3073897993523,8cyclictest0-21swapper/119:40:011
3073892993523,8cyclictest3120208-21grep21:20:260
3073906993424,6cyclictest0-21swapper/320:55:003
3073906993423,7cyclictest3140734-21grep22:20:263
3073906993419,11cyclictest0-21swapper/319:50:173
3073906993419,11cyclictest0-21swapper/319:50:173
3073901993427,4cyclictest0-21swapper/220:20:012
3073897993422,9cyclictest3101722-21munin-plugin-st20:30:011
3073897993416,12cyclictest204-21dbus-daemon23:02:001
3073906993325,4cyclictest0-21swapper/319:20:173
3073901993326,4cyclictest3100004-21cron20:25:012
3073901993322,7cyclictest0-21swapper/222:20:262
307389799337,3cyclictest131rcu_preempt23:40:111
307389799336,3cyclictest131rcu_preempt20:00:121
3073897993324,5cyclictest0-21swapper/100:15:261
3073897993323,5cyclictest0-21swapper/120:55:251
3073897993322,7cyclictest3125371-21grep21:35:271
3073892993325,4cyclictest0-21swapper/022:20:260
3073906993223,5cyclictest0-21swapper/323:00:263
3073906993223,4cyclictest0-21swapper/323:17:013
3073906993223,4cyclictest0-21swapper/319:50:003
3073901993225,4cyclictest0-21swapper/219:35:262
3073901993225,4cyclictest0-21swapper/200:10:262
3073897993224,6cyclictest2693352-21kworker/u8:0+events_unbound19:15:031
3073897993223,5cyclictest0-21swapper/119:50:261
3073897993223,5cyclictest0-21swapper/119:50:261
3073897993223,4cyclictest0-21swapper/122:35:231
3073897993221,7cyclictest0-21swapper/123:35:251
3073892993224,4cyclictest0-21swapper/020:50:260
3073892993222,4cyclictest0-21swapper/019:21:280
3073906993123,5cyclictest0-21swapper/300:10:263
3073906993123,4cyclictest0-21swapper/321:45:163
3073906993118,9cyclictest3158399-21sh23:15:003
3073901993125,3cyclictest3170771-21kthreadd23:50:002
3073901993123,5cyclictest0-21swapper/200:10:002
3073901993121,6cyclictest3121952-21grep21:25:252
307389799318,6cyclictest131rcu_preempt19:40:131
3073897993122,5cyclictest0-21swapper/100:00:161
3073897993122,4cyclictest0-21swapper/122:05:171
3073897993122,4cyclictest0-21swapper/122:05:161
3073892993125,4cyclictest3115415-21kworker/u8:1+events_unbound22:31:580
3073892993122,5cyclictest0-21swapper/019:15:140
3073892993121,6cyclictest3174165-21cron00:00:000
3073892993121,6cyclictest0-21swapper/021:30:250
3073892993121,6cyclictest0-21swapper/021:25:250
3073892993120,8cyclictest3184426-21ls00:30:000
3073906993022,4cyclictest0-21swapper/322:45:263
3073906993022,4cyclictest0-21swapper/320:05:273
3073906993021,5cyclictest0-21swapper/320:20:013
3073906993020,7cyclictest3188093-21latency_hist00:40:013
3073906993017,8cyclictest0-21swapper/321:05:013
3073901993023,4cyclictest0-21swapper/220:30:262
3073901993022,4cyclictest0-21swapper/219:26:292
307389799304,5cyclictest3139308-21kworker/u8:3+events_freezable_power_22:50:011
3073897993022,4cyclictest0-21swapper/100:25:151
3073897993019,7cyclictest3178830-21grep00:10:261
3073897993016,6cyclictest3184290-21kworker/u8:0+events_unbound00:34:531
3073892993022,5cyclictest0-21swapper/021:40:000
307389299302,23cyclictest3130491-21grep21:50:270
3073892993020,7cyclictest3146261-21cut22:40:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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