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2026-03-13 - 17:23

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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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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 100 highest latencies:
System rack0slot5s.osadl.org (updated Fri Mar 13, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36420522384359,13sleep20-21swapper/219:08:248
36418352361341,13sleep40-21swapper/419:05:3010
36418422345319,14sleep70-21swapper/719:05:3313
36421482340315,13sleep100-21swapper/1019:09:542
36419952339314,13sleep150-21swapper/1519:07:337
36419212338312,13sleep140-21swapper/1419:06:276
36418622338312,14sleep10-21swapper/119:05:421
36421262337311,14sleep50-21swapper/519:09:3311
36420962337312,13sleep110-21swapper/1119:09:063
36420932337311,13sleep80-21swapper/819:09:0214
36420202335310,13sleep60-21swapper/619:07:5712
36419892334308,14sleep90-21swapper/919:07:2715
36419242334308,14sleep00-21swapper/019:06:290
36418742334309,13sleep130-21swapper/1319:05:555
36419002333308,14sleep120-21swapper/1219:06:104
36420702332307,13sleep30-21swapper/319:08:429
39447282790,0sleep70-21swapper/723:00:0013
364253799456,0cyclictest0-21swapper/1521:57:507
38842482440,0sleep60-21swapper/622:10:1812
37017082440,0sleep20-21swapper/219:50:198
38328802430,0sleep10-21swapper/121:34:591
364253799405,11cyclictest0-21swapper/1500:38:267
364253799372,10cyclictest3836094-21memory21:35:087
3642537993511,11cyclictest0-21swapper/1500:04:117
364248099329,23cyclictest0-21swapper/100:21:051
364253799306,0cyclictest0-21swapper/1522:55:237
364253799306,0cyclictest0-21swapper/1522:32:197
364253799305,0cyclictest0-21swapper/1522:20:477
364253799305,0cyclictest0-21swapper/1521:46:367
364249999300,27cyclictest0-21swapper/500:11:0111
364253799295,0cyclictest0-21swapper/1521:23:327
364253799295,0cyclictest0-21swapper/1521:00:357
364253799295,0cyclictest0-21swapper/1520:37:337
364253799295,0cyclictest0-21swapper/1500:15:317
364253799294,0cyclictest0-21swapper/1523:41:027
364253799294,0cyclictest0-21swapper/1519:28:597
364253799294,0cyclictest0-21swapper/1519:17:247
364253799294,0cyclictest0-21swapper/1519:17:237
364253799294,0cyclictest0-21swapper/1500:27:077
364253799284,0cyclictest0-21swapper/1523:06:517
364253799284,0cyclictest0-21swapper/1522:43:467
364253799284,0cyclictest0-21swapper/1520:26:057
364253799284,0cyclictest0-21swapper/1520:14:377
364253799284,0cyclictest0-21swapper/1520:03:167
364253799284,0cyclictest0-21swapper/1519:51:487
364253799283,0cyclictest0-21swapper/1523:18:077
364253799283,0cyclictest0-21swapper/1523:18:067
364253499280,27cyclictest3908259-31munin-graph22:30:096
3642515992827,1cyclictest1623-21snmpd22:50:4015
3642515992827,1cyclictest1623-21snmpd22:05:1215
3642487992827,1cyclictest1623-21snmpd21:10:289
3642480992827,1cyclictest1623-21snmpd20:28:421
3642480992827,1cyclictest1623-21snmpd19:10:171
3642480992827,1cyclictest1623-21snmpd19:10:171
3642475992827,1cyclictest1623-21snmpd21:07:560
364253799273,0cyclictest0-21swapper/1523:52:317
3642537992726,1cyclictest1623-21snmpd20:33:557
3642537992726,1cyclictest1623-21snmpd00:14:567
364253799270,1cyclictest0-21swapper/1500:23:377
364253499270,27cyclictest0-21swapper/1423:45:196
364253499270,27cyclictest0-21swapper/1423:12:536
364253499270,1cyclictest0-21swapper/1420:24:016
3642529992726,1cyclictest1623-21snmpd21:12:385
364252999270,27cyclictest0-21swapper/1323:56:365
364252999270,27cyclictest0-21swapper/1320:15:125
364252999270,27cyclictest0-21swapper/1319:44:305
364252999270,1cyclictest0-21swapper/1321:57:025
364252799270,27cyclictest0-21swapper/1221:23:014
3642523992726,1cyclictest1623-21snmpd22:14:133
364252399270,1cyclictest0-21swapper/1122:00:563
364252399270,1cyclictest0-21swapper/1120:18:463
3642518992726,1cyclictest1623-21snmpd20:25:162
3642518992726,1cyclictest1623-21snmpd00:28:502
364251899270,1cyclictest0-21swapper/1022:59:152
3642515992726,1cyclictest1623-21snmpd23:33:0115
3642515992726,1cyclictest1623-21snmpd20:16:2215
364251599270,1cyclictest0-21swapper/921:15:0515
364251599270,1cyclictest0-21swapper/920:22:3615
3642510992726,1cyclictest1623-21snmpd21:37:2114
364251099270,27cyclictest0-21swapper/823:32:2814
364251099270,27cyclictest0-21swapper/821:49:0914
364251099270,27cyclictest0-21swapper/821:05:1114
364251099270,27cyclictest0-21swapper/820:08:3314
3642508992726,1cyclictest1623-21snmpd21:46:4213
3642508992726,1cyclictest1623-21snmpd19:31:1913
3642508992726,1cyclictest1623-21snmpd00:27:5813
3642499992726,1cyclictest1623-21snmpd21:24:0811
364248799270,27cyclictest0-21swapper/323:29:099
364248799270,27cyclictest0-21swapper/323:29:089
364248799270,27cyclictest0-21swapper/319:28:029
3642484992726,1cyclictest1623-21snmpd21:20:598
3642484992726,1cyclictest1623-21snmpd21:10:258
364248499270,27cyclictest0-21swapper/222:22:468
364248499270,1cyclictest0-21swapper/223:00:578
3642475992726,1cyclictest1623-21snmpd20:00:510
3642475992726,1cyclictest1623-21snmpd00:06:250
364247599270,27cyclictest0-21swapper/023:14:570
364247599270,1cyclictest0-21swapper/020:48:540
3642537992625,1cyclictest1623-21snmpd23:02:567
3642537992625,1cyclictest1623-21snmpd22:50:587
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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