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2025-12-13 - 11:43

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 Sat Dec 13, 2025 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1127492389366,14sleep60-21swapper/619:07:1812
1127692366344,14sleep90-21swapper/919:07:3715
1128082363338,16sleep120-21swapper/1219:08:134
1128042358334,15sleep80-21swapper/819:08:0914
1126682358335,14sleep140-21swapper/1419:06:066
1128152321298,15sleep20-21swapper/219:08:198
1126992316294,14sleep110-21swapper/1119:06:343
1128462313289,15sleep150-21swapper/1519:08:487
1127922311286,16sleep130-21swapper/1319:07:585
1127822311289,14sleep50-21swapper/519:07:4911
1126952310287,15sleep70-21swapper/719:06:3113
1126582309284,17sleep40-21swapper/419:05:5510
1128482308289,12sleep00-21swapper/019:08:490
1127782308286,14sleep10-21swapper/119:07:441
1126452304282,14sleep100-21swapper/1019:05:452
1126912296274,14sleep30-21swapper/319:06:269
113293996916,29cyclictest0-21swapper/1519:14:407
11328099440,1cyclictest0-21swapper/1120:53:163
11328099420,0cyclictest0-21swapper/1119:36:243
113280994140,1cyclictest2247-21snmpd00:23:383
113286993938,1cyclictest0-21swapper/1321:22:005
113262993939,0cyclictest0-21swapper/719:36:2413
113290993838,0cyclictest0-21swapper/1419:13:596
113266993837,1cyclictest0-21swapper/822:11:4914
11326299380,0cyclictest0-21swapper/720:53:1713
113259993734,3cyclictest2247-21snmpd19:30:2012
113280993635,1cyclictest0-21swapper/1123:19:393
113276993517,17cyclictest0-21swapper/1022:39:502
113246993534,1cyclictest2247-21snmpd21:08:328
113284993433,1cyclictest0-21swapper/1200:36:074
113284993430,3cyclictest2247-21snmpd20:32:034
113259993430,3cyclictest2247-21snmpd19:22:4312
113244993434,0cyclictest0-21swapper/122:20:421
1672552330,0sleep40-21swapper/419:55:2010
11328499330,33cyclictest0-21swapper/1219:41:454
11328499330,32cyclictest0-21swapper/1219:19:014
113266993333,0cyclictest0-21swapper/800:31:1714
11326299330,1cyclictest0-21swapper/721:30:0513
113246993232,0cyclictest0-21swapper/200:17:328
113293993129,2cyclictest2247-21snmpd20:11:137
113286993114,17cyclictest2247-21snmpd00:08:585
113286993114,17cyclictest2247-21snmpd00:08:575
11328699311,29cyclictest100657-21CPU5
11328699311,29cyclictest100657-21CPU5
11328499310,30cyclictest220302-21kworker/12:2+events23:14:524
11328499310,30cyclictest0-21swapper/1220:22:264
11328499310,30cyclictest0-21swapper/1220:22:254
113276993131,0cyclictest0-21swapper/1019:27:022
113249993130,1cyclictest0-21swapper/320:42:179
11329399305,25cyclictest0-21swapper/1519:36:377
11329399304,25cyclictest0-21swapper/1519:25:397
113284993030,0cyclictest0-21swapper/1220:45:144
11328499300,29cyclictest220302-21kworker/12:2+events22:20:244
11328499300,1cyclictest220302-21kworker/12:2+mm_percpu_wq21:37:144
113276993026,3cyclictest2247-21snmpd19:40:122
11327699300,27cyclictest0-21swapper/1020:29:462
11327699300,27cyclictest0-21swapper/1020:29:452
113262993030,0cyclictest0-21swapper/723:19:3813
11325499307,22cyclictest19104-21kworker/4:1+events21:10:3810
113254993029,1cyclictest19104-21kworker/4:1+events19:41:4510
113254993029,1cyclictest19104-21kworker/4:1+events19:35:3110
113254993029,1cyclictest19104-21kworker/4:1+events19:12:3510
113290992929,0cyclictest0-21swapper/1421:36:506
113286992929,0cyclictest0-21swapper/1300:31:165
113284992929,0cyclictest0-21swapper/1223:51:404
113284992929,0cyclictest0-21swapper/1221:52:244
113284992929,0cyclictest0-21swapper/1220:53:164
11328499290,0cyclictest0-21swapper/1222:34:154
113276992926,3cyclictest2247-21snmpd19:11:222
11327399290,28cyclictest0-21swapper/921:57:5415
113254992928,1cyclictest19104-21kworker/4:1+events23:46:3810
113254992928,1cyclictest19104-21kworker/4:1+events23:31:2610
113254992928,1cyclictest19104-21kworker/4:1+events19:19:0110
113254992928,1cyclictest19104-21kworker/4:1+events00:36:0810
11325499290,29cyclictest0-21swapper/420:11:1210
11324699290,28cyclictest0-21swapper/221:47:058
113293992827,1cyclictest2247-21snmpd22:31:597
113286992827,1cyclictest2247-21snmpd21:26:095
11328699280,1cyclictest0-21swapper/1323:37:305
113284992828,0cyclictest0-21swapper/1223:49:054
113284992828,0cyclictest0-21swapper/1219:35:294
113284992827,1cyclictest0-21swapper/1223:03:274
11328499280,27cyclictest0-21swapper/1221:27:064
11328499280,27cyclictest0-21swapper/1219:13:534
113280992825,3cyclictest2247-21snmpd22:50:473
113280992825,3cyclictest2247-21snmpd19:43:033
11328099280,27cyclictest0-21swapper/1123:11:333
113276992824,3cyclictest2247-21snmpd22:53:142
11327699280,27cyclictest0-21swapper/1023:55:492
11327699280,27cyclictest0-21swapper/1023:55:492
113273992828,0cyclictest0-21swapper/922:13:0715
11327399280,27cyclictest0-21swapper/922:58:5015
11327399280,27cyclictest0-21swapper/922:16:0315
11327399280,27cyclictest0-21swapper/920:39:4715
11326699280,27cyclictest0-21swapper/822:57:2614
11326699280,27cyclictest0-21swapper/821:35:3614
11326699280,0cyclictest0-21swapper/821:15:2714
113262992828,0cyclictest0-21swapper/720:30:5813
11326299280,28cyclictest0-21swapper/721:25:4213
11326299280,28cyclictest0-21swapper/720:00:4413
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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