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2026-04-26 - 16:11

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 Sun Apr 26, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3167121250,1sleep131673-21cat12:07:311
3167121250,1sleep131673-21cat12:07:311
507421170,3sleep30-21swapper/309:32:203
507421170,3sleep30-21swapper/309:32:203
2405321040,2chrt0-21swapper/310:22:203
2405321040,2chrt0-21swapper/310:22:203
2405321040,2chrt0-21swapper/310:22:203
81802920,3sleep30-21swapper/312:32:253
106572850,3sleep30-21swapper/311:12:253
106572850,3sleep30-21swapper/311:12:253
252022760,3sleep30-21swapper/311:52:213
305592690,2chrt0-21swapper/310:37:323
305592690,2chrt0-21swapper/310:37:323
238122690,3sleep023813-21ntpq11:47:280
238122690,3sleep023813-21ntpq11:47:280
69772630,3sleep10-21swapper/111:02:261
69772630,3sleep10-21swapper/111:02:261
69772630,3sleep10-21swapper/111:02:261
193422590,3sleep30-21swapper/308:42:273
193422590,3sleep30-21swapper/308:42:273
95042580,3sleep30-21swapper/309:42:293
95042580,3sleep30-21swapper/309:42:293
95042580,3sleep30-21swapper/309:42:293
235402580,2sleep20-21swapper/210:22:112
235402580,2sleep20-21swapper/210:22:112
34312560,4sleep20-21swapper/210:52:302
34312560,4sleep20-21swapper/210:52:302
61582540,1chrt0-21swapper/012:27:240
61582540,1chrt0-21swapper/012:27:240
255472540,3sleep025549-21find10:27:200
255472540,3sleep025549-21find10:27:200
145522520,2sleep014554-21fschecks_time09:57:210
145522520,2sleep014554-21fschecks_time09:57:210
263062510,1chrt0-21swapper/010:27:280
263062510,1chrt0-21swapper/010:27:280
318692500,1chrt31868-21df_inode09:17:210
318692500,1chrt31868-21df_inode09:17:210
197982500,9sleep0201rcuc/010:12:120
197982500,9sleep0201rcuc/010:12:120
197982500,9sleep0201rcuc/010:12:120
176822500,3sleep20-21swapper/211:32:222
176822500,3sleep20-21swapper/211:32:222
150432500,3sleep20-21swapper/208:32:212
150432500,3sleep20-21swapper/208:32:212
1760499471,43cyclictest700-21192.168.115.40-manager10:18:131
1760499471,43cyclictest700-21192.168.115.40-manager10:18:131
1760499471,31cyclictest15079-21taskset11:23:161
1760499471,31cyclictest15079-21taskset11:23:161
1760499471,31cyclictest15079-21taskset11:23:161
1760499470,44cyclictest700-21192.168.115.40-manager10:14:131
1760499470,44cyclictest700-21192.168.115.40-manager10:14:131
29162460,3sleep30-21swapper/310:52:233
29162460,3sleep30-21swapper/310:52:233
1760499461,27cyclictest6496-21taskset09:35:211
1760499461,27cyclictest6496-21taskset09:35:211
1760499461,26cyclictest23807-21taskset08:54:141
1760499461,26cyclictest23807-21taskset08:54:141
155192460,3chrt0-21swapper/211:27:162
155192460,3chrt0-21swapper/211:27:162
155192460,3chrt0-21swapper/211:27:162
1760499450,43cyclictest700-21192.168.115.40-manager10:29:131
1760499450,43cyclictest700-21192.168.115.40-manager10:29:131
1760499450,42cyclictest700-21192.168.115.40-manager11:53:461
1760499441,40cyclictest0-21swapper/109:53:421
1760499441,30cyclictest5074-21taskset12:22:331
1760499441,30cyclictest5074-21taskset12:22:331
1760499441,30cyclictest5074-21taskset12:22:331
1760499441,30cyclictest4551-21seq09:29:151
1760499441,30cyclictest4551-21seq09:29:151
1760499441,25cyclictest12390-21latency_hist09:52:171
1760499441,25cyclictest12390-21latency_hist09:52:171
1760499440,42cyclictest700-21192.168.115.40-manager12:30:471
1760499440,42cyclictest700-21192.168.115.40-manager12:30:471
1760499440,42cyclictest700-21192.168.115.40-manager12:06:091
1760499440,42cyclictest700-21192.168.115.40-manager12:06:091
1760499440,42cyclictest700-21192.168.115.40-manager12:06:091
1760499440,29cyclictest21871-21/usr/sbin/munin11:42:241
1760499440,29cyclictest21871-21/usr/sbin/munin11:42:241
1760499440,29cyclictest21871-21/usr/sbin/munin11:42:241
1760499440,28cyclictest2720-21chrt09:24:381
1760499440,28cyclictest2720-21chrt09:24:381
1760499440,28cyclictest2720-21chrt09:24:381
1760499431,28cyclictest1960-21seq10:47:501
1760499431,28cyclictest1960-21seq10:47:501
1760499430,41cyclictest700-21192.168.115.40-manager11:34:161
1760499430,41cyclictest700-21192.168.115.40-manager11:34:161
1760499430,27cyclictest5967-21taskset11:01:311
1760499430,27cyclictest5967-21taskset11:01:311
1760499430,27cyclictest5967-21taskset11:01:311
1760499421,28cyclictest8957-21seq08:15:341
1760499421,28cyclictest21864-21runrttasks08:48:111
1760499421,28cyclictest21864-21runrttasks08:48:111
1760499421,27cyclictest749-21runrttasks08:18:521
1760499421,27cyclictest749-21runrttasks08:18:521
1760499421,27cyclictest14525-21seq08:29:571
1760499421,27cyclictest14525-21seq08:29:571
1760499420,38cyclictest700-21192.168.115.40-manager12:35:021
265812410,3sleep30-21swapper/309:02:213
265812410,3sleep30-21swapper/309:02:213
1760499411,38cyclictest0-21swapper/112:14:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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