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2026-07-24 - 01:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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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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 rack4slot1s.osadl.org (updated Thu Jul 23, 2026 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
107392710,3sleep30-21swapper/309:03:513
107392710,3sleep30-21swapper/309:03:513
147222690,3chrt0-21swapper/309:13:523
147222690,3chrt0-21swapper/309:13:523
108002620,2sleep010799-21sh10:33:280
108002620,2sleep010799-21sh10:33:280
140792580,3sleep00-21swapper/009:13:450
140792580,3sleep00-21swapper/009:13:450
147282520,2sleep014739-21latency_hist10:43:390
147282520,2sleep014739-21latency_hist10:43:390
305112510,3sleep30-21swapper/311:23:493
305112510,3sleep30-21swapper/311:23:493
305112510,3sleep30-21swapper/311:23:493
305112510,3sleep30-21swapper/311:23:493
258882510,2chrt0-21swapper/009:43:520
258882510,2chrt0-21swapper/009:43:520
258882510,2chrt0-21swapper/009:43:520
9662480,2sleep30-21swapper/308:38:463
9662480,2sleep30-21swapper/308:38:463
160552440,3sleep30-21swapper/310:43:533
160552440,3sleep30-21swapper/310:43:533
158852420,3chrt0-21swapper/210:43:522
158852420,3chrt0-21swapper/210:43:522
1171994118,21cyclictest0-21swapper/009:53:440
1171994118,21cyclictest0-21swapper/009:53:440
1171994118,21cyclictest0-21swapper/009:53:440
1171994115,3cyclictest0-21swapper/011:43:460
1171994115,3cyclictest0-21swapper/011:43:460
1171994115,3cyclictest0-21swapper/011:43:460
1171994020,17cyclictest0-21swapper/009:08:420
1171994020,17cyclictest0-21swapper/009:08:420
1171994016,2cyclictest0-21swapper/009:40:500
1171994016,2cyclictest0-21swapper/009:40:500
1171994016,2cyclictest0-21swapper/009:40:500
117199401,15cyclictest13038-21grep10:38:410
122672390,3sleep30-21swapper/310:33:523
122672390,3sleep30-21swapper/310:33:523
1171993917,2cyclictest0-21swapper/009:28:500
1171993917,2cyclictest0-21swapper/009:28:500
1171993917,2cyclictest0-21swapper/009:28:500
1171993816,2cyclictest0-21swapper/010:53:280
1171993816,2cyclictest0-21swapper/010:53:280
1171993816,2cyclictest0-21swapper/010:53:280
1171993812,4cyclictest0-21swapper/010:13:420
1171993812,4cyclictest0-21swapper/010:13:420
1171993812,4cyclictest0-21swapper/010:13:420
162082370,3sleep30-21swapper/309:18:503
162082370,3sleep30-21swapper/309:18:503
66922360,2sleep06720-21awk08:53:480
66922360,2sleep06720-21awk08:53:480
262012360,2sleep025356-21/usr/sbin/munin12:38:480
262012360,2sleep025356-21/usr/sbin/munin12:38:480
117199363,8cyclictest59572latency10:18:450
1171993616,18cyclictest0-21swapper/010:43:450
1171993616,18cyclictest0-21swapper/010:43:450
1171993614,2cyclictest0-21swapper/008:58:520
1171993614,2cyclictest0-21swapper/008:58:520
117199361,11cyclictest31727-21fschecks_count11:28:420
117199361,11cyclictest31727-21fschecks_count11:28:420
117199361,11cyclictest31727-21fschecks_count11:28:420
117199361,11cyclictest31727-21fschecks_count11:28:420
1172993529,4cyclictest12083-21cron12:03:291
1172993529,4cyclictest12083-21cron12:03:291
1172993528,5cyclictest29345-21gltestperf08:28:421
1172993528,5cyclictest21790-21latency_hist12:28:401
1172993528,5cyclictest21790-21latency_hist12:28:401
1172993528,5cyclictest21790-21latency_hist12:28:401
1171993515,2cyclictest0-21swapper/012:23:420
1171993514,2cyclictest0-21swapper/008:18:420
1171993514,2cyclictest0-21swapper/008:18:420
117199351,10cyclictest10974-21/usr/sbin/munin10:33:460
266172340,2sleep026671-21netstat11:13:460
266172340,2sleep026671-21netstat11:13:460
266172340,2sleep026671-21netstat11:13:460
209262340,2sleep121051-21df09:33:411
209262340,2sleep121051-21df09:33:411
209262340,2sleep121051-21df09:33:411
1172993426,6cyclictest12656-21cron10:38:281
1172993426,6cyclictest12656-21cron10:38:281
188032330,2sleep0201rcuc/007:58:510
188032330,2sleep0201rcuc/007:58:510
1172993324,7cyclictest5893-21kernelversion10:18:451
1171993324,7cyclictest20859-21latency_hist10:58:430
117299327,5cyclictest281ktimers/111:40:061
117299327,5cyclictest281ktimers/111:40:061
1172993225,5cyclictest550-21cron08:13:301
1172993225,5cyclictest550-21cron08:13:301
1171993227,3cyclictest0-21swapper/011:03:290
1171993227,3cyclictest0-21swapper/011:03:290
1171993227,3cyclictest0-21swapper/011:03:290
1171993222,8cyclictest28042-21cut11:18:410
1171993222,8cyclictest28042-21cut11:18:410
1171993222,8cyclictest28042-21cut11:18:410
1171993219,11cyclictest0-21swapper/007:28:410
1171993219,11cyclictest0-21swapper/007:28:410
229312310,3sleep20-21swapper/211:03:462
229312310,3sleep20-21swapper/211:03:462
229312310,3sleep20-21swapper/211:03:462
229312310,3sleep20-21swapper/211:03:462
162222310,3sleep00-21swapper/012:13:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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