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2026-04-02 - 05:03

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 Wed Apr 01, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11594012232179,17sleep00-21swapper/007:07:440
11594722226169,45sleep30-21swapper/307:08:443
11593282223165,20sleep10-21swapper/107:06:411
11593402222163,18sleep40-21swapper/407:06:524
11594352218184,22sleep20-21swapper/207:08:102
11593892217178,24sleep60-21swapper/607:07:356
11595052210181,18sleep70-21swapper/707:09:127
11592962210173,24sleep50-21swapper/507:06:125
115979899360,36cyclictest0-21swapper/312:22:223
1159804992822,2cyclictest1266925-21idleruntime-cro10:15:005
115981099265,4cyclictest0-21swapper/712:15:427
115981099240,23cyclictest0-21swapper/712:25:127
115981099240,23cyclictest0-21swapper/709:15:127
1159802992421,2cyclictest1292622-21latency_hist11:00:004
115979899240,23cyclictest1162730-21latency_hist07:15:013
115979899240,23cyclictest0-21swapper/309:45:143
115981099230,22cyclictest1287349-21apt-get10:50:127
1159807992321,0cyclictest0-21swapper/612:05:016
1159807992320,0cyclictest0-21swapper/607:55:126
115980799230,22cyclictest1321638-21apt-get11:50:136
115980499230,2cyclictest1177564-21perf07:40:005
1159802992321,1cyclictest0-21swapper/411:40:164
1159802992321,1cyclictest0-21swapper/411:40:164
115980299230,22cyclictest0-21swapper/411:10:004
115980299230,22cyclictest0-21swapper/409:30:004
115979899230,22cyclictest0-21swapper/311:35:123
115979899230,22cyclictest0-21swapper/311:35:123
115979899230,1cyclictest1350377-21awk12:40:003
115979899230,1cyclictest1318788-21apt-get11:45:143
1159796992323,0cyclictest0-21swapper/211:30:132
115979699230,22cyclictest1270224-21http10:20:152
115979699230,22cyclictest1209410-21apt-get08:35:122
115979699230,22cyclictest0-21swapper/212:15:122
115979699230,22cyclictest0-21swapper/212:00:112
115979699230,22cyclictest0-21swapper/210:55:132
115979399230,22cyclictest1284498-21apt-get10:45:131
115979399230,22cyclictest0-21swapper/108:20:131
115979199230,23cyclictest1326938-21basename12:00:000
115979199230,22cyclictest0-21swapper/012:30:120
115979199230,22cyclictest0-21swapper/011:00:120
115979199230,1cyclictest0-21swapper/011:10:110
1159810992221,1cyclictest0-21swapper/707:30:137
1159810992220,1cyclictest1229271-21apt-get09:10:007
1159810992220,1cyclictest1214896-21latency_hist08:45:017
1159810992220,1cyclictest0-21swapper/709:50:007
115981099220,21cyclictest0-21swapper/711:25:137
115981099220,1cyclictest1175104-21apt-get07:35:147
1159807992221,1cyclictest1232789-21apt-get09:15:116
1159807992220,1cyclictest1298363-21awk11:10:006
115980799220,22cyclictest1186134-21munin-run07:55:016
115980799220,21cyclictest1293073-21apt-get11:00:126
115980799220,21cyclictest1209410-21apt-get08:35:126
115980799220,21cyclictest0-21swapper/612:35:116
115980799220,21cyclictest0-21swapper/611:45:146
115980799220,21cyclictest0-21swapper/609:40:126
115980799220,1cyclictest1281243-21awk10:40:006
1159804992220,1cyclictest1345079-21apt-get12:30:125
115980499220,22cyclictest1326988-21systemctl12:00:005
115980499220,21cyclictest1278368-21awk10:35:005
115980499220,21cyclictest1252800-21apt-get09:50:135
115980499220,21cyclictest0-21swapper/509:00:135
115980499220,1cyclictest1298777-21http11:10:115
115980299220,21cyclictest1255652-21apt-get09:55:134
115980299220,21cyclictest0-21swapper/411:35:124
115980299220,21cyclictest0-21swapper/411:35:124
115980299220,21cyclictest0-21swapper/411:15:114
115980299220,21cyclictest0-21swapper/409:55:004
115980299220,21cyclictest0-21swapper/408:00:124
115980299220,21cyclictest0-21swapper/407:55:124
115980299220,21cyclictest0-21swapper/407:25:134
115980299220,1cyclictest1223535-21sendmail09:00:004
115980299220,1cyclictest0-21swapper/412:05:124
1159798992221,1cyclictest1236854-21ntpq09:20:173
1159798992221,1cyclictest0-21swapper/308:25:123
1159798992220,1cyclictest0-21swapper/308:45:013
115979899220,22cyclictest0-21swapper/309:10:123
115979899220,21cyclictest0-21swapper/310:05:133
115979899220,21cyclictest0-21swapper/309:50:133
115979899220,21cyclictest0-21swapper/308:20:133
115979899220,21cyclictest0-21swapper/307:15:123
115979899220,1cyclictest0-21swapper/312:25:123
115979899220,1cyclictest0-21swapper/308:55:133
1159796992222,0cyclictest0-21swapper/210:30:112
1159796992221,0cyclictest0-21swapper/208:20:132
115979699220,22cyclictest0-21swapper/209:05:002
115979699220,21cyclictest0-21swapper/211:45:142
115979699220,21cyclictest0-21swapper/211:05:132
115979699220,0cyclictest0-21swapper/207:35:142
115979399220,22cyclictest0-21swapper/110:45:001
115979399220,21cyclictest0-21swapper/111:45:131
115979399220,21cyclictest0-21swapper/111:05:131
115979399220,21cyclictest0-21swapper/110:05:131
115979399220,21cyclictest0-21swapper/110:00:131
115979399220,21cyclictest0-21swapper/109:35:121
115979399220,21cyclictest0-21swapper/109:25:111
115979399220,21cyclictest0-21swapper/108:30:131
115979399220,21cyclictest0-21swapper/108:15:131
115979399220,21cyclictest0-21swapper/107:15:011
115979399220,1cyclictest0-21swapper/111:30:001
1159791992221,1cyclictest0-21swapper/010:05:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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