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2026-08-03 - 07:45

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, 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 rack8slot4s.osadl.org (updated Mon Aug 03, 2026 00:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12833872246180,54sleep70-21swapper/719:09:157
12831982230177,42sleep40-21swapper/419:06:304
12833062228163,20sleep00-21swapper/019:08:030
12834312226161,19sleep60-21swapper/619:09:546
12834192221183,25sleep30-21swapper/319:09:423
12833822220185,24sleep20-21swapper/219:09:092
12831632218180,25sleep50-21swapper/519:05:585
12833612215181,23sleep10-21swapper/119:08:531
1283660993518,17cyclictest1342684-21find20:45:245
128366099280,23cyclictest1399499-21cron22:25:035
128364699270,26cyclictest1293147-21cron19:25:000
128366099260,4cyclictest1323093-21taskset20:15:125
128366099260,21cyclictest0-21swapper/521:10:125
128365799263,22cyclictest1455588-21idleruntime-cro00:00:014
128364699260,25cyclictest1399518-21turbostat22:25:000
128366199250,24cyclictest1447199-21apt-get23:45:136
128366199250,24cyclictest1423451-21tar23:05:006
128366199250,24cyclictest1312616-21ntpq19:55:196
128366099258,4cyclictest0-21swapper/520:34:255
128366099258,4cyclictest0-21swapper/519:17:335
128366099258,4cyclictest0-21swapper/500:25:045
1283660992521,4cyclictest0-21swapper/523:30:125
1283660992521,4cyclictest0-21swapper/523:30:125
128366099250,24cyclictest1349285-21awk21:00:015
128366099250,22cyclictest1361126-21appstreamcli21:20:035
128366099250,0cyclictest0-21swapper/523:25:115
128365799250,24cyclictest0-21swapper/419:50:194
1283655992520,4cyclictest1325613-21latency_hist20:20:003
128365199250,24cyclictest0-21swapper/200:00:132
128364999250,24cyclictest1394039-21apt-get22:15:111
1283646992521,3cyclictest1471152-21awk00:25:000
128366499240,24cyclictest1396600-21tr22:20:007
128366499240,23cyclictest0-21swapper/721:10:127
128366199240,23cyclictest1375858-21apt-get21:45:036
128366199240,23cyclictest0-21swapper/621:30:146
128366099247,4cyclictest0-21swapper/522:57:125
128366099247,4cyclictest0-21swapper/522:02:175
128366099247,4cyclictest0-21swapper/519:39:305
128366099247,4cyclictest0-21swapper/500:03:065
1283660992420,3cyclictest0-21swapper/521:15:125
128366099240,3cyclictest1471433-21cut00:25:015
128366099240,3cyclictest1337504-21awk20:40:005
128366099240,23cyclictest1-21systemd00:00:005
128365799240,23cyclictest1449714-21dump-pmu-power23:50:004
128364999240,1cyclictest1379266-21apt-get21:50:131
128364699240,24cyclictest1480051-21sendmail00:40:000
128366499230,23cyclictest0-21swapper/720:45:207
128366499230,22cyclictest1477064-21turbostat00:35:007
128366499230,22cyclictest1385215-21apt-get22:00:137
128366499230,22cyclictest0-21swapper/720:35:137
1283661992320,3cyclictest1375855-21idleruntime-cro21:45:006
128366199230,0cyclictest0-21swapper/622:20:126
128366099239,14cyclictest0-21swapper/522:35:145
1283660992321,2cyclictest1302479-21apt-get19:40:095
128366099230,23cyclictest0-21swapper/519:45:215
128366099230,22cyclictest0-21swapper/520:10:125
1283657992322,1cyclictest0-21swapper/421:40:124
128365799230,22cyclictest0-21swapper/422:25:134
128365799230,22cyclictest0-21swapper/421:25:164
128365799230,22cyclictest0-21swapper/419:20:134
128365599230,22cyclictest1468619-21apt-get00:20:103
128365599230,22cyclictest0-21swapper/322:45:113
128365599230,22cyclictest0-21swapper/320:40:123
128365599230,22cyclictest0-21swapper/300:00:133
128365599230,1cyclictest1302068-21919:40:003
1283651992323,0cyclictest0-21swapper/219:40:102
1283651992322,1cyclictest0-21swapper/223:05:002
128365199230,23cyclictest1368724-21ntpq21:30:192
128365199230,22cyclictest0-21swapper/200:15:132
128365199230,22cyclictest0-21swapper/200:05:142
128365199230,1cyclictest1433834-21ntpq23:20:192
128364999230,22cyclictest0-21swapper/121:35:131
128364999230,22cyclictest0-21swapper/120:20:111
128364999230,1cyclictest1477496-21apt-get00:35:161
1283646992323,0cyclictest0-21swapper/021:05:130
128364699230,23cyclictest0-21swapper/022:50:180
128364699230,22cyclictest1435397-21apt-get23:25:120
1283664992221,1cyclictest1479983-21cron00:40:007
1283664992221,1cyclictest1373346-21apt-get21:40:117
1283664992221,1cyclictest1311309-21apt-get19:55:137
1283664992221,1cyclictest0-21swapper/723:45:017
1283664992221,1cyclictest0-21swapper/721:20:057
128366499220,22cyclictest1474119-21ls00:30:007
128366499220,22cyclictest0-21swapper/722:10:117
128366499220,22cyclictest0-21swapper/719:15:137
128366499220,21cyclictest0-21swapper/722:50:127
128366499220,21cyclictest0-21swapper/720:00:147
128366499220,1cyclictest1417671-21apt-get22:55:147
128366499220,1cyclictest1293587-21apt-get19:25:137
128366499220,1cyclictest0-21swapper/721:00:127
1283661992222,0cyclictest0-21swapper/619:30:136
1283661992222,0cyclictest0-21swapper/619:30:136
1283661992221,1cyclictest1429490-21apt-get23:15:136
1283661992221,1cyclictest1370387-21apt-get21:35:136
1283661992221,1cyclictest1324423-21ntpq20:15:196
128366199220,22cyclictest1361044-21munin-run21:20:006
128366199220,21cyclictest1391098-21apt-get22:10:116
128366199220,21cyclictest0-21swapper/622:00:136
128366199220,21cyclictest0-21swapper/620:30:136
128366199220,21cyclictest0-21swapper/620:20:116
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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