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2026-07-20 - 14:35

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 100 highest latencies:
System rack0slot4s.osadl.org (updated Mon Jul 20, 2026 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3730053996850,18cyclictest0-21swapper/720:05:2413
3730078994847,1cyclictest3637839-1kworker/u33:1+i915_flip20:30:237
372951424846,1sleep90-21swapper/919:09:3515
418998470,46rtkit-daemon0-21swapper/119:07:501
372951624745,1sleep110-21swapper/1119:09:373
372952024341,1sleep150-21swapper/1519:09:417
372944524139,1sleep50-21swapper/519:08:4411
372953623937,1sleep80-21swapper/819:09:5014
372950923936,2sleep40-21swapper/419:09:3110
373007499380,25cyclictest0-21swapper/1422:04:576
373007499370,31cyclictest0-21swapper/1420:17:236
3730038993734,1cyclictest3893123-21kworker/u32:0+events_unbound22:03:458
372944023735,1sleep00-21swapper/019:08:390
372948323634,1sleep20-21swapper/219:09:128
372939723634,1sleep130-21swapper/1319:08:035
372922023633,2sleep120-21swapper/1219:05:544
3730074993510,25cyclictest0-21swapper/1421:53:586
372919623532,2sleep140-21swapper/1419:05:406
3730078993429,1cyclictest1774-21snmpd20:47:287
372932823431,2sleep100-21swapper/1019:07:122
372794723431,2sleep70-21swapper/719:05:1713
3730078993333,0cyclictest3637839-1kworker/u33:1+i915_flip23:52:577
373003899330,30cyclictest0-21swapper/219:45:198
372934123331,1sleep30-21swapper/319:07:219
372926223331,1sleep60-21swapper/619:06:2112
373007899320,29cyclictest0-21swapper/1521:05:167
373007499320,20cyclictest618598-21thunderbird20:26:056
3730041993231,1cyclictest3967912-21kworker/u32:4+events_unbound23:15:179
3730072993130,1cyclictest1774-21snmpd20:13:055
3730062993130,1cyclictest3863264-21kworker/10:1+events21:53:192
3730062993129,1cyclictest3642143-21kworker/10:0+events19:11:192
3730059993130,1cyclictest1774-21snmpd21:37:2315
3730059993130,1cyclictest1774-21snmpd21:37:2215
3730059993130,1cyclictest1774-21snmpd20:02:5015
3730059993128,2cyclictest618666-21Renderer21:20:1315
373005999310,28cyclictest0-21swapper/919:10:1515
3730057993130,1cyclictest1774-21snmpd20:17:4414
3730057993130,1cyclictest1774-21snmpd00:03:3914
373005399310,30cyclictest0-21swapper/719:15:1613
373004899310,30cyclictest0-21swapper/523:41:1811
373004899310,1cyclictest0-21swapper/519:53:2311
373004699310,30cyclictest0-21swapper/420:44:4510
373004199310,30cyclictest0-21swapper/319:50:149
3730038993125,3cyclictest618598-21thunderbird23:13:358
3730038993125,3cyclictest58673-21IMAP22:35:168
373003899310,30cyclictest0-21swapper/200:04:048
3730036993129,2cyclictest4043214-21kworker/u32:0+flush-259:023:52:531
3730078993029,1cyclictest1774-21snmpd20:13:177
373007899300,30cyclictest0-21swapper/1522:27:587
373007899300,30cyclictest0-21swapper/1520:38:497
373007899300,1cyclictest0-21swapper/1522:11:027
373007899300,1cyclictest0-21swapper/1519:55:197
3730074993029,1cyclictest1774-21snmpd21:05:406
3730074993029,1cyclictest0-21swapper/1423:00:286
373007499300,30cyclictest0-21swapper/1423:36:456
3730072993029,1cyclictest1774-21snmpd23:19:335
3730072993029,1cyclictest1774-21snmpd22:16:185
3730072993029,1cyclictest1774-21snmpd19:58:115
373007299300,30cyclictest0-21swapper/1321:47:535
373007299300,30cyclictest0-21swapper/1300:19:165
373007299300,1cyclictest618598-21thunderbird00:11:065
3730068993029,1cyclictest1774-21snmpd22:46:554
3730068993029,1cyclictest1774-21snmpd21:21:494
3730068993029,1cyclictest0-21swapper/1223:57:524
373006899300,30cyclictest0-21swapper/1223:21:114
373006899300,30cyclictest0-21swapper/1219:33:294
373006899300,1cyclictest0-21swapper/1223:39:594
3730067993029,1cyclictest1774-21snmpd19:17:043
373006799300,30cyclictest0-21swapper/1120:56:393
3730062993029,1cyclictest3979193-21kworker/10:1+events23:45:252
3730062993029,1cyclictest3979193-21kworker/10:1+events23:11:282
3730062993029,1cyclictest3913282-21kworker/10:1+events22:22:152
3730062993029,1cyclictest3642143-21kworker/10:0+events20:24:242
3730062993029,1cyclictest1774-21snmpd20:29:512
3730062993029,1cyclictest1774-21snmpd00:00:542
3730062993029,1cyclictest0-21swapper/1000:35:292
3730062993029,1cyclictest0-21swapper/1000:35:282
373006299300,30cyclictest618598-21thunderbird00:16:252
373006299300,30cyclictest0-21swapper/1023:51:402
3730059993029,1cyclictest1774-21snmpd22:11:5115
373005999300,30cyclictest0-21swapper/923:12:4015
373005999300,30cyclictest0-21swapper/920:09:2615
3730057993029,1cyclictest1774-21snmpd22:28:4814
3730057993029,1cyclictest1774-21snmpd21:24:4314
3730057993029,1cyclictest1774-21snmpd19:57:0514
373005799300,30cyclictest0-21swapper/821:59:2914
373005799300,30cyclictest0-21swapper/819:38:0714
373005799300,30cyclictest0-21swapper/800:33:1314
373005799300,27cyclictest0-21swapper/819:45:1214
3730053993029,1cyclictest1774-21snmpd22:06:1413
3730053993029,1cyclictest1774-21snmpd19:41:2213
373005399300,30cyclictest0-21swapper/720:14:2413
373005399300,29cyclictest0-21swapper/721:59:2913
3730051993029,1cyclictest1774-21snmpd19:28:3812
373005199300,1cyclictest0-21swapper/620:51:3712
373004899307,23cyclictest618598-21thunderbird22:48:3011
3730048993029,1cyclictest1774-21snmpd19:31:0411
3730048993029,1cyclictest1774-21snmpd00:29:3711
373004699300,30cyclictest0-21swapper/423:48:4810
373004699300,30cyclictest0-21swapper/419:19:5910
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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