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2025-11-30 - 18:03

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 Sun Nov 30, 2025 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11753922222185,24sleep40-21swapper/407:06:064
11755802218181,24sleep70-21swapper/707:08:517
11756412216179,24sleep00-21swapper/007:09:410
11754772214181,22sleep60-21swapper/607:07:226
11755302211176,23sleep30-21swapper/307:08:063
11755652209177,21sleep20-21swapper/207:08:372
11756372208173,22sleep50-21swapper/507:09:375
11755282206173,21sleep10-21swapper/107:08:051
117591599310,25cyclictest1305914-21sh10:55:013
117590999300,29cyclictest1355564-21munin-run12:20:001
117591599280,1cyclictest0-21swapper/309:15:003
117590999280,23cyclictest0-21swapper/112:00:131
1175915992619,7cyclictest1355556-21dump-pmu-power12:20:003
117591799250,24cyclictest1263049-21turbostat09:40:004
117591599250,25cyclictest0-21swapper/307:30:003
117591599250,24cyclictest0-21swapper/308:30:123
117590999250,3cyclictest1222779-21dump-pmu-power08:29:591
117590999250,24cyclictest0-21swapper/110:40:121
117590999250,22cyclictest0-21swapper/108:30:121
1175905992524,1cyclictest0-21swapper/012:15:140
1175905992524,1cyclictest0-21swapper/008:30:120
1175926992419,4cyclictest1317883-21munin-run11:15:007
1175926992416,7cyclictest1305918-21latency_hist10:55:007
117592699240,23cyclictest1263494-21apt-get09:40:117
117592699240,0cyclictest0-21swapper/711:00:137
1175922992423,1cyclictest0-21swapper/612:25:136
1175922992423,1cyclictest0-21swapper/607:20:006
117592299241,22cyclictest0-21swapper/612:20:126
117592299241,22cyclictest0-21swapper/610:30:146
117592299241,22cyclictest0-21swapper/607:45:116
1175920992423,1cyclictest0-21swapper/510:35:135
1175917992421,2cyclictest1208917-21apt-get08:05:144
117591799240,23cyclictest0-21swapper/409:45:124
117591599240,23cyclictest0-21swapper/310:00:013
117591599240,21cyclictest0-21swapper/310:45:153
117591599240,21cyclictest0-21swapper/310:45:143
117591599240,21cyclictest0-21swapper/309:20:113
1175910992422,1cyclictest1191741-21apt-get07:35:142
117591099240,23cyclictest1352704-21munin-run12:15:012
117590999240,21cyclictest0-21swapper/111:00:021
1175905992424,0cyclictest0-21swapper/007:25:010
117592699236,4cyclictest0-21swapper/712:16:237
117592699236,4cyclictest0-21swapper/711:21:287
117592699236,4cyclictest0-21swapper/708:36:427
1175926992322,0cyclictest0-21swapper/708:50:137
1175926992320,3cyclictest0-21swapper/712:20:127
1175926992320,2cyclictest1182924-21apt-get07:20:177
117592699230,20cyclictest0-21swapper/709:00:127
1175922992321,1cyclictest1268765-21sh09:50:016
1175922992321,1cyclictest1194232-21sendmail-msp07:40:016
117592299230,22cyclictest1177406-21ntpq07:10:176
117592299230,22cyclictest0-21swapper/612:05:136
117592299230,22cyclictest0-21swapper/611:05:186
117592299230,22cyclictest0-21swapper/610:05:006
117592099230,1cyclictest1309040-21apt-get11:00:015
1175917992321,1cyclictest1306613-21apt-get10:55:124
1175917992321,1cyclictest0-21swapper/410:05:004
117591799230,22cyclictest1347424-21apt-get12:05:144
117591799230,22cyclictest1317871-21apt-get11:15:024
117591799230,22cyclictest0-21swapper/407:25:014
1175915992321,1cyclictest1361306-21idleruntime-cro12:30:013
1175915992321,1cyclictest0-21swapper/310:25:143
1175915992320,3cyclictest0-21swapper/310:30:153
117591599230,22cyclictest0-21swapper/311:00:013
117591599230,1cyclictest0-21swapper/311:00:013
1175910992321,1cyclictest1338840-21apt-get11:50:112
1175910992321,1cyclictest0-21swapper/211:05:122
117591099230,2cyclictest1327150-21apt-get11:30:122
117591099230,2cyclictest1274478-21apt10:00:002
117591099230,22cyclictest1315452-21apt-get11:10:132
117591099230,22cyclictest0-21swapper/210:35:132
117591099230,22cyclictest0-21swapper/210:30:152
1175909992321,1cyclictest0-21swapper/110:30:001
1175909992321,1cyclictest0-21swapper/107:15:001
1175909992320,2cyclictest0-21swapper/107:15:011
1175909992318,1cyclictest0-21swapper/109:10:131
117590999230,1cyclictest1274488-21munin-run10:00:001
117590999230,0cyclictest0-21swapper/111:20:141
1175905992322,1cyclictest221rcuc/011:30:120
1175905992322,1cyclictest0-21swapper/007:25:000
1175926992220,1cyclictest0-21swapper/707:15:017
117592699220,21cyclictest1234759-21sed08:50:017
117592699220,21cyclictest1217501-21apt-get08:20:147
117592699220,21cyclictest0-21swapper/712:30:117
117592699220,21cyclictest0-21swapper/711:50:017
117592699220,21cyclictest0-21swapper/711:30:127
117592699220,21cyclictest0-21swapper/709:15:157
117592699220,21cyclictest0-21swapper/708:05:137
117592699220,21cyclictest0-21swapper/707:40:157
1175922992221,1cyclictest0-21swapper/612:35:146
1175922992220,1cyclictest1309049-21/usr/sbin/munin11:00:006
117592299220,21cyclictest0-21swapper/611:35:136
117592299220,21cyclictest0-21swapper/611:25:146
117592299220,21cyclictest0-21swapper/611:25:006
117592299220,1cyclictest0-21swapper/610:20:146
1175920992221,1cyclictest0-21swapper/511:00:005
1175920992221,1cyclictest0-21swapper/508:40:005
117592099220,21cyclictest1194639-21apt-get07:40:165
117592099220,21cyclictest0-21swapper/512:00:145
117592099220,21cyclictest0-21swapper/511:05:125
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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