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2025-11-28 - 06:35

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 100 highest latencies:
System rack4slot6s.osadl.org (updated Fri Nov 28, 2025 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3057822970,2sleep030579-21grep19:05:250
1371022690,3sleep013709-21/usr/sbin/munin22:10:290
311722390,2sleep03115-21pluginstate21:30:260
2617221290,2sleep026171-21if_eth023:00:150
172121270,3chrt1722-21if_eth019:20:190
801521050,3sleep08018-21sort23:55:200
2978221050,3sleep029794-21idleruntime-cro23:15:000
2400821030,4sleep024012-21wc20:45:280
266672990,4sleep026736-21/usr/sbin/munin20:55:290
81312910,4sleep08134-21df19:45:110
4692895,10sleep0522-21mailstats23:25:270
29302880,4sleep02937-21awk23:35:230
238632830,3sleep023907-21mailstats22:50:270
225122800,2sleep022514-21wc20:40:190
149182793,6sleep00-21swapper22:15:290
193142750,2sleep019317-21idleruntime-cro00:40:000
31350996310,16cyclictest17015-21/usr/sbin/munin22:25:320
31350996213,19cyclictest4095-21irqstats23:40:180
31350996122,13cyclictest16259-21timerandwakeup22:20:290
31350996111,17cyclictest6811-21sh23:50:240
3135099609,15cyclictest31449-21/usr/sbin/munin19:10:200
31350996019,14cyclictest279-21sshd19:28:340
3135099599,18cyclictest18436-21/usr/sbin/munin20:25:190
3135099599,16cyclictest29918-21/usr/sbin/munin23:15:110
3135099599,15cyclictest14960-21systemctl20:10:270
3135099597,16cyclictest5380-21/usr/sbin/munin21:40:120
31350995921,15cyclictest9165-21df00:00:140
31350995911,19cyclictest4795-21users19:30:290
3135099589,18cyclictest8541-21uptime21:50:320
3135099589,15cyclictest11896-21runrttasks22:05:150
3135099587,16cyclictest19720-21/usr/sbin/munin20:30:160
3135099587,16cyclictest11686-21/usr/sbin/munin00:10:200
3135099586,19cyclictest14401-21/usr/sbin/munin00:20:160
31350995832,16cyclictest18173-21runrttasks20:23:570
31350995827,21cyclictest22236-21latency_hist20:40:010
31350995825,22cyclictest7056-21/usr/sbin/munin21:45:270
31350995820,12cyclictest819-21sed19:15:280
31350995811,19cyclictest9560-21memory19:50:210
31350995810,18cyclictest16707-21rs:main0
31350995810,17cyclictest22180-21/usr/sbin/munin22:45:210
3135099579,15cyclictest22189-21snmpd21:12:250
3135099578,17cyclictest6743-21latency_hist19:40:020
31350995734,14cyclictest1988-21/usr/sbin/munin21:25:310
31350995733,16cyclictest5491-21/usr/sbin/munin23:45:210
31350995732,16cyclictest27544-21/usr/sbin/munin23:05:190
31350995712,16cyclictest4366-21ntp_states21:35:260
31350995710,15cyclictest10551-21wc00:05:160
3135099569,17cyclictest16175-21users00:25:320
3135099569,15cyclictest16873-21/usr/sbin/munin00:30:260
3135099568,16cyclictest28778-21/usr/sbin/munin21:05:300
3135099568,15cyclictest10835-21ntp_states22:00:240
3135099567,16cyclictest6798-21/usr/sbin/munin19:40:170
3135099567,13cyclictest24952-21df_inode20:50:160
31350995633,14cyclictest31763-21/usr/sbin/munin21:15:260
31350995632,14cyclictest15892-21/usr/sbin/munin20:15:140
31350995630,16cyclictest27792-21/usr/sbin/munin21:00:290
31350995611,17cyclictest21186-21ntp_states22:40:230
31350995610,15cyclictest13852-21users20:05:310
3135099559,14cyclictest1-21systemd23:22:350
3135099558,15cyclictest500-21ntpq21:20:210
3135099556,16cyclictest18490-21chrt22:30:190
31350995510,17cyclictest11062-21sendmail_mailst19:55:260
31350995510,16cyclictest9711-21/usr/sbin/munin21:55:270
31350995510,16cyclictest25041-21ntp_states22:55:250
31350995510,16cyclictest19868-21ntp_states22:35:240
3135099547,17cyclictest1351-21/usr/sbin/munin23:30:150
3135099538,14cyclictest12011-21df20:00:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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