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2025-12-04 - 19:13

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 Thu Dec 04, 2025 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5136852245177,23sleep40-21swapper/407:06:374
5136832235171,22sleep20-21swapper/207:06:352
5137622222165,19sleep70-21swapper/707:07:447
5136392215182,22sleep50-21swapper/507:05:595
5137762212180,21sleep30-21swapper/307:07:563
5137262212181,20sleep00-21swapper/007:07:130
5137612211180,20sleep60-21swapper/607:07:446
5136172210177,21sleep10-21swapper/107:05:371
51415399290,28cyclictest0-21swapper/209:40:002
51416199270,1cyclictest0-21swapper/510:20:155
51416199270,1cyclictest0-21swapper/510:20:155
51415399260,25cyclictest612538-21munin-run10:00:002
51415399260,25cyclictest0-21swapper/210:35:142
51415399260,25cyclictest0-21swapper/208:50:132
51416799253,4cyclictest612498-21taskset09:59:517
51416799250,24cyclictest0-21swapper/707:30:027
51415399250,2cyclictest0-21swapper/212:10:142
51415399250,24cyclictest626853-21perf10:25:002
51415399250,24cyclictest626853-21perf10:25:002
51415399250,24cyclictest0-21swapper/209:45:132
51414999250,24cyclictest623977-21munin-run10:20:011
51414999250,24cyclictest623977-21munin-run10:20:001
51416799240,23cyclictest0-21swapper/712:10:137
51416799240,23cyclictest0-21swapper/709:30:147
51416199240,23cyclictest0-21swapper/511:40:125
51416199240,21cyclictest0-21swapper/511:15:165
51415999240,23cyclictest566519-21cut08:40:004
51415599240,23cyclictest0-21swapper/309:50:143
51415599240,1cyclictest0-21swapper/307:59:593
51414599240,24cyclictest529308-21latency_hist07:34:590
51416799230,22cyclictest618262-21munin-run10:10:007
51416799230,22cyclictest0-21swapper/708:55:157
514165992322,1cyclictest563669-21sleep08:35:006
51416599230,23cyclictest624422-21http10:20:156
51416599230,23cyclictest624422-21http10:20:146
51416599230,1cyclictest586544-21perf09:15:016
514161992321,1cyclictest688400-21apt-get12:10:135
51416199230,22cyclictest575528-21apt-get08:55:155
51416199230,20cyclictest0-21swapper/507:25:135
51416199230,1cyclictest653312-21apt-get11:10:135
51416199230,1cyclictest0-21swapper/511:50:115
51416199230,1cyclictest0-21swapper/507:25:005
51415999230,22cyclictest0-21swapper/409:15:134
514155992321,1cyclictest529309-21turbostat.cron07:34:593
514155992321,1cyclictest0-21swapper/309:30:143
51415599230,22cyclictest670050-21systemctl11:40:003
51415599230,22cyclictest627269-21apt-get10:25:133
51415599230,1cyclictest610100-21apt-get09:55:123
51415599230,1cyclictest540783-21munin-run07:54:593
51415599230,0cyclictest0-21swapper/312:00:013
51415399230,22cyclictest0-21swapper/210:55:152
514149992323,0cyclictest0-21swapper/108:15:131
514149992321,1cyclictest612974-21apt-get10:00:101
514149992321,1cyclictest0-21swapper/112:00:121
514149992320,2cyclictest676189-21http11:50:121
51414999230,22cyclictest646912-21systemctl11:00:001
51414599230,22cyclictest0-21swapper/010:10:120
514167992221,1cyclictest0-21swapper/710:25:137
514167992220,1cyclictest675768-21awk11:50:007
51416799220,22cyclictest0-21swapper/712:20:007
51416799220,21cyclictest601540-21apt-get09:40:117
51416799220,21cyclictest0-21swapper/707:10:117
51416599220,22cyclictest0-21swapper/609:05:006
51416599220,21cyclictest0-21swapper/608:40:146
51416599220,1cyclictest681729-21apt-get12:00:026
514161992220,1cyclictest558366-21apt-get08:25:125
514161992220,1cyclictest0-21swapper/509:15:125
51416199220,21cyclictest0-21swapper/509:55:125
51416199220,21cyclictest0-21swapper/509:50:135
51416199220,21cyclictest0-21swapper/507:50:125
51416199220,1cyclictest612974-21apt-get10:00:115
514159992221,0cyclictest0-21swapper/407:30:024
514159992220,1cyclictest0-21swapper/411:00:014
51415999220,21cyclictest650458-21apt-get11:05:124
51415999220,21cyclictest0-21swapper/412:30:154
51415999220,21cyclictest0-21swapper/411:45:134
51415999220,21cyclictest0-21swapper/410:00:104
51415999220,21cyclictest0-21swapper/409:30:144
51415999220,1cyclictest649817-21systemd-run11:05:004
51415999220,1cyclictest0-21swapper/411:55:004
514155992221,1cyclictest0-21swapper/308:20:133
514155992220,1cyclictest601540-21apt-get09:40:113
51415599220,21cyclictest0-21swapper/311:50:163
51415599220,21cyclictest0-21swapper/311:05:003
51415599220,21cyclictest0-21swapper/309:05:133
51415599220,21cyclictest0-21swapper/309:00:123
51415599220,21cyclictest0-21swapper/308:35:123
51415599220,21cyclictest0-21swapper/307:25:133
51415599220,1cyclictest690838-21perf12:15:003
51415599220,1cyclictest0-21swapper/312:30:143
51415599220,1cyclictest0-21swapper/312:19:593
514153992221,1cyclictest0-21swapper/209:20:122
514153992219,3cyclictest0-21swapper/212:30:152
51415399220,21cyclictest647340-21apt-get11:00:132
51415399220,21cyclictest0-21swapper/211:55:012
51415399220,21cyclictest0-21swapper/211:50:122
51415399220,21cyclictest0-21swapper/208:20:132
51415399220,21cyclictest0-21swapper/208:00:112
514149992222,0cyclictest0-21swapper/107:35:111
514149992221,1cyclictest0-21swapper/110:25:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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