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2025-09-13 - 17:12

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 Sep 13, 2025 00:47:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29513132366329,25sleep70-21swapper/719:05:4413
29513202355328,18sleep130-21swapper/1319:05:495
29513902351324,18sleep60-21swapper/619:06:4612
29514492349322,18sleep80-21swapper/819:07:3714
29515262345318,18sleep140-21swapper/1419:08:476
29513892345318,18sleep50-21swapper/519:06:4511
29515862344323,14sleep30-21swapper/319:09:429
29514692344317,18sleep110-21swapper/1119:07:573
29513282344318,17sleep40-21swapper/419:05:5610
29515122342314,19sleep00-21swapper/019:08:330
29514902341315,17sleep150-21swapper/1519:08:167
29513712339312,18sleep90-21swapper/919:06:3315
29513552339312,18sleep120-21swapper/1219:06:214
29513612338311,18sleep10-21swapper/119:06:251
29513342337309,19sleep100-21swapper/1019:06:022
29513822333306,18sleep20-21swapper/219:06:438
2951910994833,14cyclictest3485308-21CPU11
295191499468,25cyclictest0-21swapper/622:51:3212
295191499458,24cyclictest0-21swapper/621:12:4212
2951895993837,1cyclictest0-21swapper/120:02:511
2951948993634,1cyclictest0-21swapper/1422:06:226
295191499349,25cyclictest0-21swapper/621:45:3812
295191499349,14cyclictest0-21swapper/623:02:3112
2951951993328,4cyclictest1526-21snmpd20:01:167
2951941993227,4cyclictest1526-21snmpd20:45:534
2951937993220,9cyclictest0-21swapper/1122:12:163
295191499329,12cyclictest0-21swapper/619:33:5012
295191499318,12cyclictest0-21swapper/623:13:3012
295191499318,12cyclictest0-21swapper/622:29:3512
295191499318,12cyclictest0-21swapper/622:29:3412
295191499317,13cyclictest0-21swapper/619:55:4812
295190799310,1cyclictest0-21swapper/421:45:1210
295189399310,1cyclictest0-21swapper/021:45:130
295195199300,22cyclictest3072549-21chrt21:48:207
295191799300,29cyclictest0-21swapper/721:52:3213
295190799300,1cyclictest0-21swapper/420:09:1810
2951898993026,3cyclictest1526-21snmpd21:18:098
2951895993014,16cyclictest1526-21snmpd19:35:531
2951948992927,2cyclictest1526-21snmpd00:36:096
295194199290,29cyclictest0-21swapper/1220:55:054
2951937992926,2cyclictest1526-21snmpd23:30:133
295193799290,28cyclictest0-21swapper/1123:11:393
295192099290,28cyclictest0-21swapper/821:50:0414
295192099290,28cyclictest0-21swapper/800:01:0614
295190399295,17cyclictest0-21swapper/322:15:139
295189399291,28cyclictest2978638-21kworker/0:1+events20:09:190
295195199280,28cyclictest0-21swapper/1523:50:167
295195199280,0cyclictest0-21swapper/1519:34:487
2951948992826,1cyclictest1526-21snmpd22:12:226
295194899280,27cyclictest0-21swapper/1420:30:526
295194899280,27cyclictest0-21swapper/1420:30:526
2951943992826,2cyclictest567-21plymouthd22:41:205
2951943992826,1cyclictest0-21swapper/1320:55:055
2951937992827,1cyclictest1526-21snmpd19:21:303
295193799281,2cyclictest2950045-21kworker/11:0+mm_percpu_wq19:40:063
2951933992827,1cyclictest1526-21snmpd23:55:242
2951928992827,1cyclictest0-21swapper/923:04:5115
2951928992826,2cyclictest1526-21snmpd22:03:5815
295192899280,27cyclictest0-21swapper/900:01:2915
295192099280,27cyclictest0-21swapper/800:19:3614
2951917992824,3cyclictest1526-21snmpd23:39:2213
2951917992817,8cyclictest0-21swapper/719:15:4113
295191799280,28cyclictest0-21swapper/721:34:0613
295191799280,19cyclictest0-21swapper/719:43:5913
2951914992826,1cyclictest1526-21snmpd00:00:0512
2951910992828,0cyclictest0-21swapper/519:20:3511
295190799280,28cyclictest0-21swapper/420:37:4910
295190399280,28cyclictest0-21swapper/300:31:319
295189899280,28cyclictest0-21swapper/222:47:418
295189899280,28cyclictest0-21swapper/222:29:538
295189899280,28cyclictest0-21swapper/222:29:538
2951951992726,1cyclictest0-21swapper/1523:21:397
295195199270,27cyclictest0-21swapper/1500:30:187
2951948992726,1cyclictest1526-21snmpd19:16:476
295194899270,27cyclictest0-21swapper/1422:39:396
295194899270,27cyclictest0-21swapper/1422:39:386
295194399270,27cyclictest0-21swapper/1323:07:005
295194399270,27cyclictest0-21swapper/1321:05:145
295194399270,27cyclictest0-21swapper/1320:35:165
295194399270,27cyclictest0-21swapper/1300:11:125
295194199270,27cyclictest0-21swapper/1223:08:184
2951937992726,1cyclictest1526-21snmpd20:37:083
295193799270,27cyclictest0-21swapper/1123:53:263
295193799270,27cyclictest0-21swapper/1121:37:153
295193799270,27cyclictest0-21swapper/1120:16:343
295193799270,1cyclictest0-21swapper/1119:11:373
295193799270,1cyclictest0-21swapper/1100:19:013
295193399270,27cyclictest0-21swapper/1022:43:352
2951928992726,1cyclictest1526-21snmpd23:46:2215
2951928992726,1cyclictest1526-21snmpd21:38:2815
295192899270,1cyclictest0-21swapper/919:33:3515
2951920992726,1cyclictest1526-21snmpd20:06:2814
2951920992725,2cyclictest1526-21snmpd23:17:4214
295192099270,27cyclictest0-21swapper/819:39:0914
295192099270,1cyclictest0-21swapper/823:31:1714
295192099270,1cyclictest0-21swapper/820:44:5114
2951917992723,4cyclictest1526-21snmpd23:51:2413
295191799270,27cyclictest0-21swapper/723:48:1013
295191799270,27cyclictest0-21swapper/721:06:5013
295191799270,1cyclictest0-21swapper/721:36:3013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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