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2026-06-09 - 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 Tue Jun 09, 2026 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39022590,3sleep0389-21tr23:30:180
832122560,2sleep08322-21mailstats00:00:260
1253821370,2sleep012539-21cut20:05:290
1895821260,3chrt18959-21uptime22:35:270
949521180,3chrt9493-21irqstats22:00:160
2785521170,4chrt27853-21sendmail_mailtr23:10:270
1811721150,4chrt18114-21cat00:40:010
3076421140,3chrt30762-21users21:15:280
846521100,2sleep08468-21ntp_kernel_err19:50:200
2249221000,5sleep022517-21idleruntime20:45:150
1609021000,3sleep016091-21cat20:20:130
160062800,3sleep016004-21grep22:25:180
2954327720,30sleep029629-21/usr/sbin/munin19:05:270
280392760,4sleep028106-21/usr/sbin/munin21:05:270
30246997034,26cyclictest25469-21/usr/sbin/munin20:55:260
3024699618,17cyclictest2718-21/usr/sbin/munin23:40:270
30246996136,15cyclictest9975-21/usr/sbin/munin19:55:310
30246996034,16cyclictest9396-21/usr/sbin/munin00:05:210
30246996021,11cyclictest0-21swapper22:10:300
30246996010,18cyclictest28691-21/usr/sbin/munin23:15:250
3024699599,16cyclictest4001-21/usr/sbin/munin23:45:300
3024699598,16cyclictest2878-21/usr/sbin/munin21:35:230
3024699597,17cyclictest31631-21/usr/sbin/munin19:15:180
30246995933,15cyclictest19154-21/usr/sbin/munin20:30:290
30246995931,19cyclictest26632-21/usr/sbin/munin21:00:230
30246995931,18cyclictest6841-21latency_hist19:45:000
30246995928,18cyclictest17704-21sendmail_mailtr20:25:260
298732595,41sleep00-21swapper21:13:420
3024699589,16cyclictest5281-21/usr/sbin/munin23:50:180
3024699589,15cyclictest4339-21/usr/sbin/munin19:35:150
3024699588,17cyclictest31303-21/usr/sbin/munin23:25:150
3024699587,20cyclictest1774-21/usr/sbin/munin19:25:250
30246995833,15cyclictest1686-21/usr/sbin/munin21:30:160
30246995832,16cyclictest9031-21runrttasks21:58:430
30246995810,17cyclictest30114-21sshd23:20:150
30246995810,16cyclictest3055-21/usr/sbin/munin19:30:250
30246995810,15cyclictest6934-21/usr/sbin/munin19:45:260
3024699579,14cyclictest6758-21/usr/sbin/munin21:50:160
3024699579,14cyclictest13134-21/usr/sbin/munin00:20:140
3024699578,16cyclictest5473-21/usr/sbin/munin21:45:110
3024699578,16cyclictest26359-21/usr/sbin/munin23:05:200
3024699578,15cyclictest10447-21/usr/sbin/munin00:10:290
3024699577,18cyclictest19833-21/usr/sbin/munin20:35:290
3024699577,16cyclictest14334-21/usr/sbin/munin00:25:270
30246995734,15cyclictest7604-21runrttasks23:59:060
30246995730,18cyclictest1675-21/usr/sbin/munin23:35:200
30246995728,17cyclictest15695-21/usr/sbin/munin00:30:140
30246995714,15cyclictest13402-21ls22:15:170
30246995710,15cyclictest31489-21/usr/sbin/munin21:20:140
3024699569,14cyclictest21022-21df_inode22:45:120
3024699568,17cyclictest30348-21/usr/sbin/munin19:10:200
3024699568,17cyclictest10805-21/usr/sbin/munin20:00:120
3024699567,18cyclictest304-21/usr/sbin/munin21:25:130
3024699567,15cyclictest19976-21ntp_states22:40:240
30246995633,15cyclictest21395-21/usr/sbin/munin20:40:200
30246995633,14cyclictest12065-21/usr/sbin/munin00:15:250
30246995632,16cyclictest14791-21/usr/sbin/munin20:15:150
30246995610,17cyclictest25127-21ntp_states23:00:220
30246995610,14cyclictest13571-21memory20:10:190
3024699558,15cyclictest24867-21idleruntime-cro20:55:000
3024699558,14cyclictest14526-21/usr/sbin/munin22:20:200
3024699558,13cyclictest17088-21/usr/sbin/munin22:30:140
3024699557,17cyclictest23672-21irqstats22:55:160
3024699557,16cyclictest10636-21/usr/sbin/munin22:05:160
30246995510,17cyclictest22382-21/usr/sbin/munin22:50:140
3024699548,16cyclictest545-21df_inode19:20:120
30246995413,15cyclictest4383-21memory21:40:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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