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2026-08-26 - 20:02

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 Wed Aug 26, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
78372780,2chrt7840-21grep08:44:210
292132760,4chrt0-21swapper/309:44:103
159352620,5sleep0171ktimers/007:39:210
159352620,5sleep0171ktimers/007:39:210
17572530,3sleep20-21swapper/209:54:222
17572530,3sleep20-21swapper/209:54:222
240202510,4chrt0-21swapper/208:04:032
240202510,4chrt0-21swapper/208:04:032
238202500,1sleep123822-21fschecks_time09:29:131
238202500,1sleep123822-21fschecks_time09:29:131
175062500,2sleep117505-21df10:39:121
175062500,2sleep117505-21df10:39:121
175062500,2sleep117505-21df10:39:121
117062470,3sleep30-21swapper/310:24:063
117062470,3sleep30-21swapper/310:24:063
117062470,3sleep30-21swapper/310:24:063
578999461,11cyclictest25501-21seq08:05:421
578999461,11cyclictest25501-21seq08:05:421
578999461,10cyclictest20592-21seq10:44:451
578999461,10cyclictest20592-21seq10:44:451
316572460,2sleep20-21swapper/209:49:162
316572460,2sleep20-21swapper/209:49:162
224582460,2sleep122460-21fschecks_time07:59:121
224582460,2sleep122460-21fschecks_time07:59:121
578999451,9cyclictest31133-21taskset08:21:101
578999451,9cyclictest31133-21taskset08:21:101
578999441,6cyclictest10706-21seq11:45:321
578999440,6cyclictest28886-21seq09:43:071
578999440,3cyclictest700-21192.168.115.40-manager10:15:021
578999431,6cyclictest17735-21taskset09:13:511
578999431,6cyclictest17735-21taskset09:13:511
578999431,3cyclictest0-21swapper/110:58:581
578999431,3cyclictest0-21swapper/110:58:581
578999431,33cyclictest0-21swapper/111:10:291
578999431,33cyclictest0-21swapper/111:10:291
578999431,26cyclictest0-21swapper/110:59:241
578999431,26cyclictest0-21swapper/110:59:241
578999430,7cyclictest12052-21seq08:58:121
578999430,6cyclictest6283-21seq08:42:081
578999430,6cyclictest6283-21seq08:42:081
578999430,3cyclictest700-21192.168.115.40-manager12:39:541
578999430,3cyclictest700-21192.168.115.40-manager12:39:541
578999421,3cyclictest0-21swapper/110:19:351
578999421,3cyclictest0-21swapper/110:19:351
578999421,3cyclictest0-21swapper/110:19:351
578999421,3cyclictest0-21swapper/108:15:511
578999421,2cyclictest0-21swapper/109:52:341
578999421,2cyclictest0-21swapper/109:52:341
578999421,2cyclictest0-21swapper/108:12:011
578999421,2cyclictest0-21swapper/108:12:011
578999421,28cyclictest749-21runrttasks11:36:071
578999421,28cyclictest749-21runrttasks11:36:071
578999421,1cyclictest0-21swapper/109:55:531
578999421,1cyclictest0-21swapper/109:55:531
578999420,5cyclictest16345-21taskset12:00:191
578999420,5cyclictest16345-21taskset12:00:191
578999420,3cyclictest700-21192.168.115.40-manager12:33:391
578999420,3cyclictest700-21192.168.115.40-manager12:33:391
578999420,3cyclictest700-21192.168.115.40-manager11:52:371
578999420,2cyclictest700-21192.168.115.40-manager11:33:101
578999420,2cyclictest700-21192.168.115.40-manager11:33:101
578999411,3cyclictest0-21swapper/111:20:511
578999411,3cyclictest0-21swapper/111:20:511
578999411,3cyclictest0-21swapper/111:15:311
578999411,3cyclictest0-21swapper/110:07:341
578999411,3cyclictest0-21swapper/109:20:481
578999411,3cyclictest0-21swapper/109:20:481
578999411,3cyclictest0-21swapper/109:16:401
578999411,3cyclictest0-21swapper/109:16:401
578999411,3cyclictest0-21swapper/107:53:351
578999411,2cyclictest0-21swapper/111:26:121
578999411,2cyclictest0-21swapper/111:26:121
578999411,1cyclictest0-21swapper/112:28:381
578999411,1cyclictest0-21swapper/112:28:381
578999411,1cyclictest0-21swapper/111:55:301
578999411,1cyclictest0-21swapper/111:55:301
578999411,1cyclictest0-21swapper/111:41:391
578999411,1cyclictest0-21swapper/111:41:391
578999411,1cyclictest0-21swapper/111:41:391
578999411,1cyclictest0-21swapper/111:06:121
578999411,1cyclictest0-21swapper/111:06:121
578999411,1cyclictest0-21swapper/108:52:321
578999410,3cyclictest700-21192.168.115.40-manager10:50:041
578999410,3cyclictest700-21192.168.115.40-manager10:50:041
578999401,3cyclictest0-21swapper/112:34:391
578999401,3cyclictest0-21swapper/112:34:391
578999401,3cyclictest0-21swapper/110:28:441
578999401,3cyclictest0-21swapper/110:28:441
578999401,3cyclictest0-21swapper/110:03:421
578999401,3cyclictest0-21swapper/110:03:421
578999401,3cyclictest0-21swapper/110:03:421
578999401,3cyclictest0-21swapper/109:25:191
578999401,3cyclictest0-21swapper/109:25:191
578999401,3cyclictest0-21swapper/108:27:361
578999401,3cyclictest0-21swapper/108:27:361
578999401,2cyclictest0-21swapper/112:21:081
578999401,2cyclictest0-21swapper/112:21:081
578999401,2cyclictest0-21swapper/110:30:351
578999401,2cyclictest0-21swapper/109:37:331
578999401,2cyclictest0-21swapper/109:37:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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