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2025-12-01 - 07:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 50 highest latencies:
System rack0slot4s.osadl.org (updated Mon Dec 01, 2025 00:46:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12341122391371,13sleep10-21swapper/119:07:571
12340122377356,13sleep140-21swapper/1419:06:336
12340052371351,13sleep70-21swapper/719:06:2613
12341542359317,13sleep80-21swapper/819:08:2014
12342462354314,14sleep60-21swapper/619:09:2212
12339762354334,13sleep50-21swapper/519:06:0811
12340262352332,13sleep110-21swapper/1119:06:463
12339822351331,13sleep90-21swapper/919:06:1215
12338732351331,13sleep150-21swapper/1519:05:307
12339402349329,13sleep30-21swapper/319:05:349
12340342348330,12sleep20-21swapper/219:06:538
12341872346325,14sleep120-21swapper/1219:08:404
12340982345325,13sleep40-21swapper/419:07:4410
12342862344325,13sleep100-21swapper/1019:09:592
12342742343323,13sleep00-21swapper/019:09:480
12341072343322,14sleep130-21swapper/1319:07:535
1234685994949,0cyclictest0-21swapper/122:40:161
1234683993636,0cyclictest1350436-21kworker/0:0+events21:42:370
1234692993427,4cyclictest2395797-21snmpd23:24:479
1234716993229,3cyclictest2395797-21snmpd19:10:413
123471499320,31cyclictest0-21swapper/1022:58:462
123468399322,30cyclictest181ktimers/022:35:190
123472999310,28cyclictest0-21swapper/1521:55:187
123472699310,30cyclictest0-21swapper/1423:43:046
123472699310,30cyclictest0-21swapper/1423:43:046
123472699310,30cyclictest0-21swapper/1422:07:026
1234724993130,1cyclictest2395797-21snmpd21:20:005
123472499310,30cyclictest0-21swapper/1300:08:235
123472499310,30cyclictest0-21swapper/1300:00:165
123471999310,30cyclictest0-21swapper/1220:20:174
123471999310,30cyclictest0-21swapper/1219:44:154
1234716993129,1cyclictest2395797-21snmpd22:20:233
123471699310,30cyclictest0-21swapper/1120:27:023
123471699310,30cyclictest0-21swapper/1120:27:023
123471499310,30cyclictest0-21swapper/1023:50:162
123471499310,30cyclictest0-21swapper/1023:45:152
123471499310,30cyclictest0-21swapper/1022:25:162
123471499310,30cyclictest0-21swapper/1022:10:142
123470899310,30cyclictest0-21swapper/821:52:3414
1234698993130,1cyclictest2395797-21snmpd19:14:5311
123469899310,30cyclictest0-21swapper/523:31:4911
123469899310,30cyclictest0-21swapper/523:31:4911
123469599310,30cyclictest0-21swapper/419:30:3610
1234685993131,0cyclictest0-21swapper/122:21:131
1234685993131,0cyclictest0-21swapper/120:08:151
1234729993029,1cyclictest2395797-21snmpd20:55:027
1234726993029,1cyclictest2395797-21snmpd22:52:066
1234726993029,1cyclictest2395797-21snmpd20:13:136
1234726993029,1cyclictest2395797-21snmpd00:33:586
1234726993029,1cyclictest2395797-21snmpd00:26:426
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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