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2026-01-05 - 06:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

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.

Total number of samples: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rack4slot6s.osadl.org (updated Mon Jan 05, 2026 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
200522490,3sleep02004-21wc21:05:240
2021922130,2sleep020222-21wc00:20:290
44529912611,18cyclictest27950-21irqstats20:40:170
1753621210,3chrt17534-21df_inode20:00:150
44529911930,15cyclictest15741-21runrttasks19:52:380
44529911831,13cyclictest10634-21latency_hist23:45:010
44529911630,13cyclictest21797-21runrttasks22:20:300
44529911622,16cyclictest10204-21runrttasks21:35:550
44529911529,15cyclictest14697-21runrttasks21:55:080
44529911528,14cyclictest5914-21/usr/sbin/munin19:15:160
44529911527,14cyclictest23145-21runrttasks00:32:370
44529911526,78cyclictest22189-21latency_hist00:30:010
44529911526,15cyclictest31632-21if_eth023:00:170
44529911526,14cyclictest31844-21/usr/sbin/munin20:55:190
44529911512,18cyclictest20862-21sshd22:18:380
44529911511,18cyclictest14461-21sshd19:47:400
44529911428,14cyclictest8076-21/usr/sbin/munin23:35:180
44529911427,15cyclictest18461-21df_inode00:15:140
44529911427,14cyclictest21820-21switchtime20:15:300
44529911425,15cyclictest5637-21if_eth023:25:170
44529911424,16cyclictest3068-21/usr/sbin/munin23:15:180
44529911410,17cyclictest19002-21awk22:10:270
44529911329,14cyclictest14316-21runrttasks21:52:540
44529911328,13cyclictest20682-21runrttasks20:10:440
44529911328,13cyclictest16135-21if_eth022:00:150
44529911326,16cyclictest1453-21runrttasks23:09:440
4452991128,25cyclictest12172-21munin-run19:40:010
4452991126,11cyclictest25321-21ntpq22:35:210
44529911225,15cyclictest31445-21runrttasks20:54:230
44529911225,15cyclictest2663-21runrttasks23:14:070
44529911225,14cyclictest5497-21runrttasks21:19:420
44529911224,14cyclictest14538-21runrttasks00:00:070
44529911223,16cyclictest6422-21runrttasks21:21:300
44529911223,15cyclictest17175-21runrttasks19:58:540
4452991118,22cyclictest17560-21runrttasks22:05:200
4452991118,18cyclictest22750-21ntpq22:25:210
44529911128,13cyclictest31244-21runrttasks22:59:100
44529911126,14cyclictest5276-21runrttasks19:11:300
44529911125,14cyclictest18326-21latency_hist00:15:010
4452991107,21cyclictest18761-21/usr/sbin/munin20:05:310
44529911026,15cyclictest4137-21runrttasks21:14:100
44529911025,15cyclictest24840-21runrttasks22:34:300
44529911021,15cyclictest11711-21runrttasks23:49:080
44529911012,17cyclictest12501-21memory19:40:200
44529911010,19cyclictest10912-21df_inode21:40:130
722821090,3chrt7229-21forks19:20:150
44529910921,15cyclictest30119-21date22:55:010
4452991089,22cyclictest795-21ntpq21:00:240
4452991088,17cyclictest7473-21sed21:25:270
44529910827,14cyclictest26340-21runrttasks20:34:500
44529910823,15cyclictest24957-21runrttasks20:29:000
44529910821,15cyclictest5225-21runrttasks23:23:440
44529910810,17cyclictest26538-21memory22:40:200
4452991078,16cyclictest8260-21/usr/sbin/munin21:30:170
4452991077,14cyclictest122452chrt23:50:220
44529910712,16cyclictest29369-21ntp_states20:45:190
44529910710,19cyclictest16819-21sshd00:08:380
44529910710,17cyclictest8441-21/usr/sbin/munin19:25:340
44529910710,16cyclictest9918-21wc19:30:190
4452991068,28cyclictest6979-21memory23:30:170
44529910617,15cyclictest27457-21runrttasks20:38:280
44529910611,18cyclictest13379-21irqstats23:55:180
4452991057,27cyclictest12325-21memory21:45:170
44529910512,16cyclictest24552-21sshd00:38:390
44529910510,18cyclictest27686-21df22:45:130
4452991047,14cyclictest22919-21ntpq20:20:220
440627118,30sleep04426-21munin-run19:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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