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2025-11-20 - 16:36

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 Nov 20, 2025 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7474862240179,19sleep60-21swapper/607:06:076
7474822233169,51sleep20-21swapper/207:06:022
7476982232170,19sleep40-21swapper/407:09:104
7475572230168,49sleep30-21swapper/307:07:073
7475232224185,26sleep50-21swapper/507:06:385
7475632216183,21sleep00-21swapper/007:07:130
7475142205177,18sleep70-21swapper/707:06:327
7476382202175,17sleep10-21swapper/107:08:181
74799399298,21cyclictest0-21swapper/710:00:007
74798799250,2cyclictest794354-21sh08:30:015
74797799250,3cyclictest771503-21perf07:50:003
74797099250,24cyclictest0-21swapper/008:40:000
74799199240,23cyclictest777209-21perf08:00:006
74798799240,1cyclictest925259-21apt-get12:15:125
747977992422,1cyclictest916703-21apt-get12:00:123
747977992421,2cyclictest780078-21munin-run08:04:593
74797799240,0cyclictest0-21swapper/307:10:133
74797699240,0cyclictest0-21swapper/212:30:122
74797299240,23cyclictest0-21swapper/107:50:121
747970992422,1cyclictest818184-21apt-get09:10:120
74797099240,23cyclictest890291-21basename11:15:010
74797099240,23cyclictest0-21swapper/009:55:120
74799399236,4cyclictest0-21swapper/711:44:107
74799399230,22cyclictest751876-21apt-get07:15:147
74799399230,22cyclictest0-21swapper/709:45:157
747991992323,0cyclictest0-21swapper/608:55:196
747991992319,3cyclictest788650-21perf08:19:596
74798799230,22cyclictest800078-21munin-run08:40:015
74798799230,22cyclictest0-21swapper/510:45:025
74798799230,22cyclictest0-21swapper/510:25:115
74798799230,22cyclictest0-21swapper/509:50:015
74798799230,21cyclictest893576-21apt-get11:20:135
747982992323,0cyclictest0-21swapper/410:10:014
747982992321,1cyclictest844179-21apt-get09:55:134
74798299230,23cyclictest794370-21munin-run08:30:004
74798299230,22cyclictest0-21swapper/412:20:114
74798299230,1cyclictest922407-21apt-get12:10:134
747977992321,1cyclictest882139-21apt-get11:00:133
74797699230,22cyclictest859011-21apt-get10:20:112
747972992321,1cyclictest928135-21apt-get12:20:121
74797299230,22cyclictest0-21swapper/111:10:101
747970992321,1cyclictest789086-21apt-get08:20:150
747970992320,2cyclictest826366-21awk09:25:000
74797099231,21cyclictest2278112-21in:imuxsock10:40:010
74797099230,22cyclictest0-21swapper/012:35:120
74799399220,21cyclictest0-21swapper/712:25:107
74799399220,21cyclictest0-21swapper/710:40:147
74799399220,21cyclictest0-21swapper/707:10:127
74799399220,1cyclictest882139-21apt-get11:00:147
74799399220,1cyclictest876410-21apt-get10:50:137
74799399220,0cyclictest0-21swapper/710:55:127
747991992222,0cyclictest0-21swapper/608:20:156
747991992221,1cyclictest0-21swapper/609:40:156
747991992220,1cyclictest853134-21packagekitd10:10:016
747991992220,1cyclictest826767-21apt-get09:25:116
747991992220,1cyclictest800518-21apt-get08:40:096
74799199220,21cyclictest0-21swapper/610:55:126
74799199220,21cyclictest0-21swapper/610:35:126
74799199220,1cyclictest921987-21munin-run12:10:006
747987992221,1cyclictest0-21swapper/511:20:015
747987992220,1cyclictest0-21swapper/512:35:125
74798799220,22cyclictest0-21swapper/511:50:135
74798799220,22cyclictest0-21swapper/509:40:005
74798799220,21cyclictest0-21swapper/512:10:005
74798799220,21cyclictest0-21swapper/508:15:155
74798799220,21cyclictest0-21swapper/507:50:115
747982992222,0cyclictest0-21swapper/409:45:164
747982992221,1cyclictest834951-21idleruntime-cro09:40:004
74798299220,21cyclictest0-21swapper/408:15:154
74798299220,1cyclictest760035-21munin-run07:29:594
747977992219,2cyclictest782922-21idleruntime-cro08:10:003
74797799220,21cyclictest0-21swapper/311:15:123
74797799220,21cyclictest0-21swapper/310:45:013
74797799220,21cyclictest0-21swapper/307:15:153
74797799220,0cyclictest0-21swapper/312:20:113
74797799220,0cyclictest0-21swapper/311:50:013
74797799220,0cyclictest0-21swapper/309:50:023
74797799220,0cyclictest0-21swapper/307:25:123
747976992220,1cyclictest797225-21munin-run08:35:002
747976992220,1cyclictest0-21swapper/207:30:002
74797699220,21cyclictest0-21swapper/212:05:112
74797699220,21cyclictest0-21swapper/211:05:102
74797699220,21cyclictest0-21swapper/211:00:142
74797699220,21cyclictest0-21swapper/210:50:132
74797699220,1cyclictest916273-21systemctl12:00:002
74797699220,1cyclictest0-21swapper/207:20:122
747972992222,0cyclictest0-21swapper/111:15:111
747972992222,0cyclictest0-21swapper/107:10:121
74797299220,21cyclictest0-21swapper/109:47:231
747970992222,0cyclictest0-21swapper/008:40:090
747970992220,1cyclictest922407-21apt-get12:10:120
747970992220,1cyclictest890695-21apt-get11:15:110
74797099220,21cyclictest0-21swapper/009:00:000
74797099220,1cyclictest768652-21awk07:44:590
7809792210,1chrt0-21swapper/208:05:122
747993992121,0cyclictest0-21swapper/709:35:107
747993992120,1cyclictest0-21swapper/711:45:157
747993992119,1cyclictest0-21swapper/708:00:007
74799399210,0cyclictest916703-21apt-get12:00:137
74799399210,0cyclictest0-21swapper/711:25:167
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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