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2026-08-26 - 23:09

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 Aug 26, 2026 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2261100994842,4cyclictest2313220-21kworker/u8:1+events_unbound09:43:393
2261091994833,11cyclictest231ktimers/109:00:131
2261096994534,7cyclictest2361400-21grep12:00:002
2261087994536,6cyclictest121ktimers/009:25:130
2261091994433,7cyclictest2347277-21grep11:15:251
2261100994235,5cyclictest2349346-21kworker/u8:1+events_unbound11:24:003
2261096994235,3cyclictest0-21swapper/210:00:012
2261087994236,4cyclictest2277176-21kworker/u8:0+events_unbound07:53:130
2261096994134,4cyclictest2313022-21unixbench_singl09:35:262
2261091994133,5cyclictest2346048-21kthreadd11:15:001
2261091994129,8cyclictest2268874-21munin-plugin-st07:30:011
2261087994134,4cyclictest2299568-21cut09:00:010
2261087994132,6cyclictest2264761-21unixbench_multi07:15:250
2261100994033,5cyclictest2273603-21kworker/u8:1+events_unbound08:28:183
226110099401,15cyclictest0-21swapper/311:30:113
2261091994032,5cyclictest2320248-21munin-plugin-st10:00:011
2261091994029,5cyclictest131rcu_preempt09:18:121
2261087994032,5cyclictest2339226-21kthreadd10:55:000
2261096993929,7cyclictest2327088-21sendmail10:20:002
2261087993933,4cyclictest2307916-21kworker/u8:0+events_unbound09:33:360
2261087993931,5cyclictest2375277-21sendmail12:40:000
2261087993929,7cyclictest438-21cron10:20:000
2261100993830,5cyclictest2311732-21munin-plugin-st09:35:013
2261100993828,6cyclictest2334120-21sendmail10:40:013
2261091993827,7cyclictest0-21swapper/109:55:011
2261091993826,6cyclictest0-21swapper/109:23:331
2261087993830,5cyclictest2352404-21unixbench_multi11:30:240
2261100993730,4cyclictest2285938-21sendmail08:20:013
2261100993728,5cyclictest2320239-21cron10:00:013
2261100993726,7cyclictest2346491-21fschecks_time11:15:163
2261100993719,5cyclictest2294297-21kworker/u8:2+events_unbound08:59:043
226109199378,6cyclictest22846502cut08:15:161
2261091993728,6cyclictest2265245-21munin-plugin-st07:20:001
2261087993727,6cyclictest0-21swapper/012:29:150
2261100993626,6cyclictest0-21swapper/307:40:003
2261100993624,8cyclictest2297856-21auditctl08:55:013
226110099361,14cyclictest0-21swapper/309:00:123
2261091993628,5cyclictest0-21swapper/110:05:161
2261091993626,5cyclictest0-21swapper/111:05:261
2261091993625,6cyclictest0-21swapper/112:35:001
2261091993622,7cyclictest131rcu_preempt12:35:251
2261087993627,5cyclictest0-21swapper/008:30:250
226108799361,4cyclictest131rcu_preempt08:20:120
2261100993517,6cyclictest2366193-21kworker/u8:0+events_unbound12:11:563
2261096993526,6cyclictest2294902-21fschecks_time08:45:152
2261091993526,6cyclictest2368212-21cron12:20:001
2261091993525,6cyclictest2274002-21idleruntime-cro07:45:011
2261091993523,8cyclictest0-21swapper/110:45:281
2261091993522,7cyclictest0-21swapper/107:13:071
2261087993526,5cyclictest0-21swapper/007:15:010
2261091993423,7cyclictest2266950-21sh07:25:001
2261091993410,6cyclictest221rcuc/108:40:001
226108799346,5cyclictest131rcu_preempt09:50:120
2261087993427,5cyclictest2351180-21cut11:30:000
2261087993420,7cyclictest2296063-21kworker/u8:0+events_unbound08:50:170
2261100993327,4cyclictest2277176-21kworker/u8:0+events_unbound08:00:093
2261100993325,4cyclictest0-21swapper/309:35:263
2261100993324,4cyclictest0-21swapper/310:18:453
2261100993314,6cyclictest131rcu_preempt09:05:113
2261096993322,8cyclictest2340485-21grep10:55:242
2261091993325,4cyclictest0-21swapper/108:45:151
2261091993323,7cyclictest2355881-21grep11:40:261
2261091993322,6cyclictest0-21swapper/108:28:181
2261087993325,4cyclictest0-21swapper/008:15:010
2261087993325,4cyclictest0-21swapper/007:40:260
2261087993324,5cyclictest0-21swapper/012:05:250
2261087993323,6cyclictest0-21swapper/009:05:160
2261087993323,5cyclictest2334119-21sendmail10:40:010
2261100993222,6cyclictest2370375-21grep12:25:143
2261100993222,6cyclictest0-21swapper/310:30:003
2261100993222,6cyclictest0-21swapper/310:05:263
2261100993217,5cyclictest2287305-21kworker/u8:2+events_unbound08:32:463
2261096993226,4cyclictest2338860-21kworker/u8:0+events_unbound11:08:562
2261096993223,5cyclictest0-21swapper/211:00:272
2261096993222,6cyclictest0-21swapper/207:20:002
226109699321,6cyclictest131rcu_preempt08:00:112
2261091993225,5cyclictest2314738-21unixbench_singl09:40:251
2261091993224,5cyclictest0-21swapper/110:10:251
2261091993221,7cyclictest0-21swapper/111:45:261
2261091993218,10cyclictest2272281-21ls07:40:001
226108799324,4cyclictest131rcu_preempt10:25:130
2261087993224,4cyclictest0-21swapper/010:08:420
2261087993221,7cyclictest0-21swapper/008:05:260
2261087993215,7cyclictest2349346-21kworker/u8:1+events_unbound12:00:170
226110099312,4cyclictest0-21swapper/310:50:123
2261100993123,4cyclictest0-21swapper/308:05:263
2261100993122,5cyclictest0-21swapper/312:20:183
2261100993115,4cyclictest2275445-21kworker/u8:2+events_unbound07:50:223
2261096993123,4cyclictest0-21swapper/209:50:252
2261096993122,6cyclictest2354565-21cron11:40:002
226109199316,6cyclictest221rcuc/110:20:011
226109199315,5cyclictest24-21ksoftirqd/112:25:011
2261091993121,7cyclictest221rcuc/110:20:171
2261091993119,9cyclictest2286325-21grep08:20:161
2261087993124,3cyclictest0-21swapper/007:35:250
2261087993123,5cyclictest0-21swapper/009:40:010
2261087993123,4cyclictest0-21swapper/011:00:000
2261087993121,6cyclictest0-21swapper/009:20:160
2261100993022,4cyclictest0-21swapper/311:50:003
2261100993022,3cyclictest0-21swapper/310:30:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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