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2026-04-20 - 21:12

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 Apr 20, 2026 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1131216995423,5cyclictest0-21swapper/309:00:003
113120599491,46cyclictest0-21swapper/007:55:130
1131210994739,5cyclictest1188434-21kthreadd09:55:011
1131216994622,4cyclictest0-21swapper/310:50:263
1131216994532,9cyclictest1245334-21sh12:40:013
113121499439,13cyclictest1195215-21seq10:14:402
1131214994335,5cyclictest1217860-21idleruntime-cro11:20:012
1131216994232,7cyclictest1147292-21sh07:55:013
1131216994230,7cyclictest0-21swapper/312:04:593
1131205994235,4cyclictest1183318-21grep09:40:000
1131216994029,7cyclictest1234647-21grep12:05:243
1131205994031,6cyclictest1232998-21unixbench_singl12:00:270
1131216993928,7cyclictest1201637-21head10:30:233
1131214993929,6cyclictest1196951-21sh10:19:592
1131205993933,4cyclictest1238949-21kworker/u8:3+events_unbound12:26:170
1131216993826,8cyclictest1165595-21tail08:45:263
1131214993830,4cyclictest0-21swapper/211:39:592
1131205993827,5cyclictest131rcu_preempt11:20:180
1131214993729,5cyclictest0-21swapper/210:00:002
1131210993727,6cyclictest0-21swapper/110:19:591
1131205993717,12cyclictest0-21swapper/007:40:190
1131216993627,6cyclictest0-21swapper/308:15:173
1131216993624,7cyclictest0-21swapper/309:35:283
1131214993627,6cyclictest0-21swapper/211:44:592
1131214993626,6cyclictest0-21swapper/209:30:262
1131210993629,4cyclictest1133099-21latency_hist07:15:011
1131205993629,4cyclictest1193557-21munin-plugin-st10:09:590
1131205993629,4cyclictest1193557-21munin-plugin-st10:09:590
1131205993628,5cyclictest0-21swapper/007:15:020
1131205993625,7cyclictest0-21swapper/008:45:010
1131216993526,7cyclictest391ktimers/310:10:133
1131216993526,5cyclictest0-21swapper/312:15:263
1131216993525,7cyclictest1133189-21latency_hist07:15:023
1131216993525,6cyclictest0-21swapper/311:35:243
1131216993524,7cyclictest0-21swapper/307:55:263
1131216993524,5cyclictest0-21swapper/310:05:463
1131216993524,5cyclictest0-21swapper/310:05:463
1131214993527,4cyclictest0-21swapper/207:35:262
1131210993528,4cyclictest1224877-21latency_hist11:40:001
1131205993525,6cyclictest0-21swapper/008:10:260
1131205993525,5cyclictest0-21swapper/007:30:010
1131216993424,6cyclictest1169862-21fschecks_count09:00:133
1131216993424,6cyclictest0-21swapper/309:10:173
1131216993422,7cyclictest0-21swapper/312:30:003
1131214993426,5cyclictest0-21swapper/208:25:012
1131214993424,6cyclictest0-21swapper/210:50:162
113120599349,8cyclictest11-21ksoftirqd/012:15:010
113120599345,16cyclictest11-21ksoftirqd/008:55:010
1131205993425,6cyclictest0-21swapper/009:15:260
1131205993425,6cyclictest0-21swapper/009:15:260
1131205993424,6cyclictest0-21swapper/008:35:270
1131205993422,9cyclictest121ktimers/008:25:110
1131205993421,7cyclictest1182934-21kworker/u8:1+events_unbound10:14:410
113120599341,29cyclictest1235114-21idleruntime-cro12:10:010
1131216993325,5cyclictest1222506-21grep11:30:243
1131216993324,5cyclictest0-21swapper/312:20:233
1131216993323,7cyclictest1164349-21auditctl08:45:013
1131216993321,7cyclictest0-21swapper/310:20:003
1131216993321,10cyclictest391ktimers/307:35:133
1131214993325,4cyclictest0-21swapper/207:50:262
1131210993326,4cyclictest0-21swapper/107:15:261
1131210993326,4cyclictest0-21swapper/107:15:261
1131210993326,3cyclictest0-21swapper/107:45:261
1131210993326,3cyclictest0-21swapper/107:45:261
1131210993324,6cyclictest0-21swapper/111:15:011
113120599336,13cyclictest11-21ksoftirqd/011:30:170
1131205993328,3cyclictest121ktimers/009:56:330
1131205993323,6cyclictest0-21swapper/010:30:220
1131205993322,7cyclictest0-21swapper/007:15:240
1131205993322,7cyclictest0-21swapper/007:15:240
1131205993318,9cyclictest131rcu_preempt07:50:200
113120599331,24cyclictest11-21ksoftirqd/007:20:160
1131216993224,4cyclictest0-21swapper/308:10:253
1131216993222,6cyclictest0-21swapper/309:20:013
1131216993222,6cyclictest0-21swapper/309:20:003
1131216993221,7cyclictest1231292-21grep11:55:253
1131216993220,8cyclictest0-21swapper/311:05:263
1131214993225,3cyclictest0-21swapper/208:40:162
1131214993224,4cyclictest0-21swapper/212:00:152
1131214993223,6cyclictest0-21swapper/209:20:012
1131214993223,6cyclictest0-21swapper/209:20:012
1131214993222,7cyclictest1236356-21grep12:10:252
1131210993225,4cyclictest1142197-21sendmail07:40:021
1131210993221,7cyclictest0-21swapper/110:55:001
1131210993212,11cyclictest1131200-21cyclictest08:16:291
113120599327,6cyclictest11-21ksoftirqd/008:55:200
1131205993224,5cyclictest1210814-21munin-plugin-st10:59:590
1131205993223,5cyclictest0-21swapper/010:40:000
1131205993222,6cyclictest0-21swapper/011:05:260
1131205993221,6cyclictest0-21swapper/011:45:260
1131205993214,11cyclictest131rcu_preempt07:45:180
1131205993214,11cyclictest131rcu_preempt07:45:170
1131205993212,4cyclictest131rcu_preempt11:00:150
1131205993212,4cyclictest0-21swapper/011:30:000
1131216993123,5cyclictest962958-21kworker/u8:0+events_unbound07:34:533
1131216993121,7cyclictest1210407-21grep10:55:253
1131210993125,4cyclictest1190128-21cron10:00:001
1131210993123,6cyclictest53-21kcompactd009:05:111
1131210993123,6cyclictest53-21kcompactd009:05:111
1131210993123,4cyclictest0-21swapper/111:56:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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