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2025-11-20 - 00:59

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 Nov 19, 2025 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
744485994740,4cyclictest829305-21kworker/u8:1+events_unbound11:14:313
744476994634,9cyclictest231ktimers/108:15:151
744476994634,9cyclictest231ktimers/108:15:151
744473994636,7cyclictest844340-21grep11:55:270
744476994536,6cyclictest854140-21fschecks_count12:25:181
744476994536,6cyclictest775927-21grep08:40:011
744481994437,5cyclictest810318-21kworker/u8:0+events_unbound10:19:232
744473994317,7cyclictest131rcu_preempt09:20:140
74447399431,40cyclictest0-21swapper/007:45:130
744485994230,9cyclictest821983-21grep10:50:273
744476994235,4cyclictest850122-21cron12:15:001
744476994233,6cyclictest779734-21fschecks_count08:50:151
744473994236,3cyclictest0-21swapper/008:40:010
744485994132,6cyclictest803628-21cron10:00:003
744481994132,5cyclictest820709-21apt10:50:002
74448199410,14cyclictest32-21ksoftirqd/211:20:162
744476994133,5cyclictest817752-21fschecks_time10:40:181
744476994133,5cyclictest751822-21cron07:30:011
744476994133,5cyclictest751822-21cron07:30:011
744476994133,4cyclictest803630-21cron10:00:011
744473994133,4cyclictest0-21swapper/011:00:000
744485994033,5cyclictest808591-21kworker/u8:2+events_unbound10:14:223
744485994030,6cyclictest837552-21grep11:35:253
744481994029,8cyclictest760574-21munin-plugin-st07:55:012
744473994029,8cyclictest796629-21sendmail09:40:000
744473994029,8cyclictest796629-21sendmail09:40:000
744481993931,4cyclictest0-21swapper/211:40:002
744476993931,5cyclictest820705-21cron10:50:011
744473993931,6cyclictest837554-21unixbench_singl11:35:260
744473993929,6cyclictest846061-21unixbench_multi12:00:270
744473993929,6cyclictest846061-21unixbench_multi12:00:260
744473993929,5cyclictest831168-21idleruntime-cro11:20:000
744485993830,4cyclictest0-21swapper/309:04:123
744481993730,4cyclictest791516-21munin-plugin-st09:25:012
744481993729,4cyclictest0-21swapper/211:00:012
744481993727,6cyclictest0-21swapper/208:05:002
744485993628,5cyclictest0-21swapper/308:40:003
744485993627,6cyclictest0-21swapper/312:40:013
744485993627,5cyclictest0-21swapper/310:30:283
744485993627,5cyclictest0-21swapper/310:30:273
744481993628,4cyclictest0-21swapper/207:40:012
744481993625,7cyclictest846059-21grep12:00:272
744481993625,7cyclictest846059-21grep12:00:262
744481993613,7cyclictest131rcu_preempt10:25:162
744481993613,7cyclictest131rcu_preempt10:25:152
744476993629,4cyclictest0-21swapper/109:00:001
744473993623,9cyclictest121ktimers/010:10:140
744485993528,4cyclictest801688-21kworker/u8:2+events_unbound10:04:223
744485993526,6cyclictest823649-21unixbench_multi10:55:283
744485993526,6cyclictest0-21swapper/307:20:013
744485993524,6cyclictest853337-21grep12:20:293
744481993526,6cyclictest748411-21apt07:20:012
744481993526,6cyclictest0-21swapper/209:00:002
744481993526,5cyclictest0-21swapper/211:05:192
744481993526,4cyclictest0-21swapper/209:55:172
744476993528,5cyclictest763830-21kworker/u8:2+events_unbound08:29:111
744476993526,6cyclictest836722-21fschecks_time11:35:171
744476993526,6cyclictest835847-21unixbench_singl11:30:271
744476993526,5cyclictest842691-21unixbench_singl11:50:281
744476993526,4cyclictest0-21swapper/108:34:111
744473993526,5cyclictest0-21swapper/009:45:180
744473993524,7cyclictest856710-21grep12:30:280
74447399351,9cyclictest11-21ksoftirqd/007:30:160
744473993517,4cyclictest769016-21kworker/u8:3+events_unbound08:26:520
744485993426,4cyclictest0-21swapper/308:25:173
744485993425,5cyclictest0-21swapper/309:20:013
744485993424,6cyclictest0-21swapper/312:35:003
744481993424,7cyclictest769101-21sendmail08:20:002
744481993424,7cyclictest769101-21sendmail08:20:002
744481993424,6cyclictest0-21swapper/209:39:592
744481993424,6cyclictest0-21swapper/209:39:592
744476993424,6cyclictest0-21swapper/111:49:591
744476993423,6cyclictest0-21swapper/110:10:261
744473993427,3cyclictest0-21swapper/009:30:000
744485993326,4cyclictest796282-21kworker/u8:0+events_unbound09:44:183
744485993323,7cyclictest0-21swapper/309:15:013
744481993327,4cyclictest808591-21kworker/u8:2+events_unbound10:44:292
744481993325,5cyclictest311ktimers/210:05:132
744481993325,4cyclictest0-21swapper/208:40:012
744481993323,6cyclictest0-21swapper/211:45:282
744476993326,4cyclictest0-21swapper/109:40:181
744476993323,6cyclictest0-21swapper/111:15:271
744476993322,7cyclictest0-21swapper/111:00:001
744473993326,5cyclictest829305-21kworker/u8:1+events_unbound11:31:430
744473993324,6cyclictest0-21swapper/009:10:280
744473993323,7cyclictest855456-21cron12:29:590
744473993312,3cyclictest131rcu_preempt12:15:140
744485993224,4cyclictest0-21swapper/308:45:263
744481993225,5cyclictest796282-21kworker/u8:0+events_unbound09:54:212
744481993224,5cyclictest0-21swapper/207:45:272
744481993224,4cyclictest0-21swapper/208:05:262
744476993222,7cyclictest760559-21cron07:55:011
744476993221,7cyclictest0-21swapper/107:35:281
744473993222,7cyclictest760557-21cron07:55:000
744473993222,6cyclictest779755-21grep08:50:170
744473993221,7cyclictest0-21swapper/010:15:260
744473993215,4cyclictest857077-21kworker/u8:0+events_unbound12:39:000
744485993125,3cyclictest0-21swapper/308:15:003
744485993124,4cyclictest0-21swapper/311:50:293
744485993124,3cyclictest0-21swapper/311:25:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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