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2026-07-13 - 09:37

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 all highest latencies:
System rack4slot6s.osadl.org (updated Mon Jul 13, 2026 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1054021510,3sleep010542-21modprobe00:00:010
835121210,4chrt8267-21/usr/sbin/munin21:45:150
3225621140,4sleep032332-21/usr/sbin/munin19:05:250
2821521130,3chrt28218-21timerwakeupswit23:00:290
668221100,2sleep06683-21modprobe23:45:010
406921100,3sleep04087-21munin-run23:35:000
2112621030,3sleep021127-21date22:35:020
1791121020,3sleep017924-21vmstat22:20:310
62682980,4sleep06332-21switchtime19:30:270
316812970,3sleep031702-21cpu21:10:120
214882940,4sleep021512-21cat20:30:170
172042940,3sleep017270-21latency_hist22:20:030
205622900,3sleep020623-21timerwakeupswit20:25:280
56732820,3sleep05712-21cpu21:35:120
574997446,16cyclictest27093-21users20:50:300
574997039,19cyclictest7170-21/usr/sbin/munin21:40:180
574996943,16cyclictest19129-21timerandwakeup22:25:250
574996942,15cyclictest23569-21seq20:38:180
574996942,14cyclictest17302-21wc00:25:180
574996841,15cyclictest23069-21users22:40:300
574996839,16cyclictest27977-21memory20:55:190
574996838,19cyclictest6798-21/usr/sbin/munin23:45:180
574996838,19cyclictest11074-21df_inode19:50:150
574996825,16cyclictest2842-21latency_hist23:30:020
574996742,15cyclictest31298-21seq21:08:010
574996739,16cyclictest10890-21df_inode21:55:140
574996738,17cyclictest8444-21/usr/sbin/munin19:40:260
574996738,17cyclictest27501-21runrttasks23:00:010
574996726,27cyclictest25294-21tr22:50:190
574996720,20cyclictest1801-21sed21:20:010
574996642,15cyclictest11964-21/usr/sbin/munin00:05:290
574996641,14cyclictest29364-21ntpq21:00:180
574996641,14cyclictest276-21runrttasks23:35:220
574996641,13cyclictest5797-21grep19:30:010
574996640,17cyclictest30213-21/usr/sbin/munin23:10:290
574996640,15cyclictest823-21irqstats19:10:180
574996638,14cyclictest16181-21/usr/sbin/munin20:10:210
574996633,19cyclictest10677-21/usr/sbin/munin00:00:350
574996623,16cyclictest13336-21sshd19:59:090
574996540,17cyclictest14942-21runrttasks22:10:200
574996538,16cyclictest18559-21irqstats00:30:180
574996538,15cyclictest9836-21ntp_states21:50:210
574996441,14cyclictest14192-21/usr/sbin/munin20:00:270
574996439,15cyclictest15161-21ntp_kernel_pll_20:05:220
574996438,14cyclictest14423-21seq22:08:420
574996437,15cyclictest16494-21seq00:20:500
16072640,3sleep01608-21latency_hist23:25:010
574996340,15cyclictest4356-21runrttasks19:24:220
574996339,14cyclictest22336-21munin-run22:40:010
574996339,13cyclictest10019-21ntp_states19:45:210
574996338,14cyclictest31640-21irqstats23:15:180
574996337,15cyclictest20011-21latency_hist20:25:010
574996337,13cyclictest9151-21chrt23:54:220
574996331,20cyclictest216-21rs:main0
574996326,14cyclictest17973-21runrttasks20:15:290
574996241,11cyclictest24219-21/usr/sbin/munin20:40:220
574996237,14cyclictest276-21runrttasks19:16:450
574996236,16cyclictest5299-21runrttasks21:33:000
574996233,18cyclictest7426-21runrttasks19:35:220
574996230,19cyclictest14583-21df00:15:120
574996039,13cyclictest12774-21runrttasks22:00:420
574996037,13cyclictest13303-21df00:10:140
574996036,14cyclictest3883-21runrttasks21:26:520
574996035,16cyclictest29108-21/usr/sbin/munin23:05:180
574996011,16cyclictest1827-21/usr/sbin/munin21:20:240
574995937,12cyclictest24044-21ntp_states22:45:210
574995935,15cyclictest25857-21runrttasks20:45:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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