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2025-09-19 - 05:43

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 Fri Sep 19, 2025 00:46:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4307662364324,13sleep10-21swapper/119:07:201
4307592364344,13sleep110-21swapper/1119:07:143
4306992362342,13sleep120-21swapper/1219:06:274
4308342361345,10sleep70-21swapper/719:08:1513
4309332356322,28sleep100-21swapper/1019:09:382
4308412354313,13sleep140-21swapper/1419:08:226
4306382354308,14sleep80-21swapper/819:05:3514
4307932350331,12sleep60-21swapper/619:07:4112
4306922350327,14sleep50-21swapper/519:06:2011
4299372350329,12sleep00-21swapper/019:05:270
4309002349330,12sleep130-21swapper/1319:09:095
4307632349326,14sleep150-21swapper/1519:07:187
4306962348325,14sleep90-21swapper/919:06:2515
4306902347323,15sleep30-21swapper/319:06:189
4307082346324,15sleep20-21swapper/219:06:338
4306322346323,14sleep40-21swapper/419:05:3210
43145999388,30cyclictest544097-21kworker/u32:2+events_unbound21:37:454
431468993434,0cyclictest0-21swapper/1519:30:177
431457993434,0cyclictest0-21swapper/1119:30:183
43143899339,10cyclictest0-21swapper/521:47:2111
431468993232,0cyclictest0-21swapper/1522:20:177
431468993230,2cyclictest0-21swapper/1520:59:417
43146699320,29cyclictest0-21swapper/1419:25:166
43146399320,31cyclictest0-21swapper/1320:13:165
43144299320,29cyclictest0-21swapper/622:40:1612
43143899320,29cyclictest0-21swapper/519:40:1811
43146899310,30cyclictest0-21swapper/1523:15:157
431463993129,2cyclictest0-21swapper/1322:40:395
43145799310,30cyclictest0-21swapper/1100:28:033
43145499310,30cyclictest0-21swapper/1022:02:012
43144899310,30cyclictest0-21swapper/823:01:3014
431446993130,1cyclictest1878-21snmpd21:48:2213
43144699310,30cyclictest0-21swapper/722:16:0213
43144699310,30cyclictest0-21swapper/720:56:4113
43143899310,30cyclictest0-21swapper/521:35:1611
43143899310,30cyclictest0-21swapper/500:36:0611
43143899310,30cyclictest0-21swapper/500:21:0211
431420993129,1cyclictest1878-21snmpd23:37:500
431468993029,1cyclictest606184-21mii-tool22:40:167
431468993029,1cyclictest1878-21snmpd20:12:017
431468993029,1cyclictest0-21swapper/1500:36:577
43146899300,30cyclictest0-21swapper/1521:08:397
431466993029,1cyclictest1878-21snmpd20:55:356
43146699300,29cyclictest0-21swapper/1400:05:176
43146699300,1cyclictest0-21swapper/1419:23:536
43146399300,1cyclictest0-21swapper/1320:24:375
431459993029,1cyclictest492759-21ethtool20:20:184
431459993029,1cyclictest1878-21snmpd23:51:054
431459993029,1cyclictest0-21swapper/1221:21:454
431457993029,1cyclictest0-21swapper/1120:48:473
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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