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2026-03-12 - 22:57

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 Thu Mar 12, 2026 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17387442375368,5sleep80-21swapper/819:08:3914
17385362374356,11sleep110-21swapper/1119:06:013
17386162366359,4sleep100-21swapper/1019:07:052
17386542364325,13sleep10-21swapper/119:07:271
17386292361325,29sleep60-21swapper/619:07:1612
17385852357337,13sleep150-21swapper/1519:06:377
17387862354334,13sleep70-21swapper/719:09:1013
17387702354333,5sleep120-21swapper/1219:08:594
17353642354313,13sleep30-21swapper/319:05:069
17388512353333,13sleep140-21swapper/1419:09:496
17387402353344,6sleep50-21swapper/519:08:3611
17387372353333,13sleep20-21swapper/219:08:338
17385512351331,13sleep90-21swapper/919:06:1615
17387722346325,14sleep130-21swapper/1319:09:005
17385222346328,12sleep00-21swapper/019:05:500
17387822344324,13sleep40-21swapper/419:09:0710
1739301993332,1cyclictest0-21swapper/623:56:3612
173932799310,30cyclictest0-21swapper/1521:56:377
173932299310,30cyclictest0-21swapper/1323:11:425
173932299310,28cyclictest0-21swapper/1319:35:135
173932299310,28cyclictest0-21swapper/1319:35:135
1739318993130,1cyclictest1774-21snmpd23:50:564
1739318993130,1cyclictest0-21swapper/1220:38:384
173931899310,30cyclictest0-21swapper/1222:24:124
1739316993130,1cyclictest1774-21snmpd23:42:463
173931699310,30cyclictest0-21swapper/1119:28:273
173931399310,30cyclictest0-21swapper/1020:32:472
1739306993130,1cyclictest0-21swapper/823:20:5514
173930399310,30cyclictest0-21swapper/723:21:1613
1739301993131,0cyclictest0-21swapper/600:06:4512
173928299310,30cyclictest0-21swapper/023:05:070
1739327993029,1cyclictest1774-21snmpd20:46:457
1739325993029,1cyclictest1774-21snmpd23:38:136
1739325993029,1cyclictest1774-21snmpd23:15:236
1739325993029,1cyclictest1774-21snmpd21:58:196
1739325993029,1cyclictest1774-21snmpd20:07:046
1739325993029,1cyclictest1774-21snmpd00:31:286
1739322993029,1cyclictest1774-21snmpd23:40:025
173932299300,30cyclictest0-21swapper/1321:27:445
1739316993029,1cyclictest1774-21snmpd23:51:203
1739316993029,1cyclictest1774-21snmpd21:11:573
173931699300,30cyclictest0-21swapper/1122:55:283
173931699300,29cyclictest0-21swapper/1100:24:033
1739313993029,1cyclictest2020716-21mii-tool23:30:132
1739313993029,1cyclictest2006137-21kworker/10:2+events23:22:292
1739311993029,1cyclictest1774-21snmpd00:30:4215
1739306993029,1cyclictest2103172-21mii-tool00:35:1414
1739306993029,1cyclictest1830444-21mii-tool20:55:1414
173930699300,1cyclictest0-21swapper/823:02:4914
173930699300,1cyclictest0-21swapper/800:32:1014
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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