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2026-04-18 - 22:44

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 Sat Apr 18, 2026 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1148323030,3sleep011484-21mailstats10:00:260
1899322410,3sleep018996-21cpu08:25:120
519022380,2sleep05188-21sendmail_mailtr07:30:280
1359621150,4chrt13594-21if_eth012:15:140
885521090,3sleep08854-21wc09:50:270
2053021040,3sleep020593-21/usr/sbin/munin10:35:290
1978721000,4sleep019815-21modprobe12:40:010
67522990,3sleep06753-21sshd11:48:550
42472970,3sleep04291-21lockfile-create11:40:010
46912870,2sleep04694-21grep11:40:200
60892850,3sleep06133-21awk09:40:200
3073927720,31sleep030789-21df07:05:120
97662750,3sleep09775-21modprobe07:50:000
3193699629,19cyclictest17495-21/usr/sbin/munin10:25:130
3193699619,21cyclictest28085-21ntpq11:05:200
31936996136,16cyclictest32572-21/usr/sbin/munin07:10:270
31936996136,16cyclictest32002-21/usr/sbin/munin09:15:160
3193699599,33cyclictest4838-21ntpq09:35:210
3193699599,18cyclictest22908-21ntpq10:45:180
3193699598,17cyclictest30576-21/usr/sbin/munin09:10:260
3193699597,18cyclictest22101-21/usr/sbin/munin08:35:290
31936995935,15cyclictest799-21/usr/sbin/munin09:20:160
31936995934,16cyclictest13901-21/usr/sbin/munin08:05:170
31936995932,16cyclictest3598-21/usr/sbin/munin09:30:240
31936995927,22cyclictest10624-21runrttasks09:57:550
3193699589,17cyclictest16354-21/usr/sbin/munin08:15:310
3193699589,16cyclictest26389-21munin-plugin-st11:00:000
3193699587,17cyclictest29103-21/usr/sbin/munin11:10:270
31936995826,23cyclictest12561-21/usr/sbin/munin08:00:140
31936995810,16cyclictest2448-21/usr/sbin/munin07:20:210
3193699579,16cyclictest1812-21/usr/sbin/munin11:30:220
3193699579,16cyclictest17355-21/usr/sbin/munin12:30:130
3193699578,16cyclictest9614-21/usr/sbin/munin12:00:250
3193699578,16cyclictest31705-21/usr/sbin/munin11:20:170
3193699578,16cyclictest205-21cron12:15:000
3193699578,15cyclictest1999-21/usr/sbin/munin09:25:090
31936995732,16cyclictest18907-21/usr/sbin/munin10:30:150
31936995732,15cyclictest28964-21runrttasks09:03:300
31936995732,14cyclictest20958-21runrttasks08:31:270
31936995730,17cyclictest23672-21runrttasks08:42:270
31936995721,10cyclictest0-21swapper10:17:400
31936995714,13cyclictest7180-21/usr/sbin/munin09:45:240
31936995711,19cyclictest576-21df11:25:120
3193699569,15cyclictest30730-21/usr/sbin/munin11:15:240
3193699569,15cyclictest285-21sshd10:13:540
3193699568,16cyclictest7898-21chrt11:52:450
3193699568,15cyclictest856-21/usr/sbin/munin07:15:190
3193699567,18cyclictest26965-21runrttasks08:55:210
3193699567,18cyclictest17666-21/usr/sbin/munin08:20:240
3193699567,16cyclictest8303-21/usr/sbin/munin11:55:140
3193699567,15cyclictest9905-21/usr/sbin/munin07:50:130
31936995634,14cyclictest3616-21/usr/sbin/munin07:25:180
31936995632,15cyclictest11244-21runrttasks07:55:120
31936995630,16cyclictest24642-21runrttasks10:51:190
31936995610,14cyclictest24254-21irqstats08:45:170
3193699559,14cyclictest7340-21/usr/sbin/munin07:40:310
3193699558,17cyclictest25395-21/usr/sbin/munin08:50:170
3193699558,14cyclictest21995-21seq10:40:390
3193699557,17cyclictest16210-21/usr/sbin/munin10:20:280
31936995531,15cyclictest27547-21runrttasks11:03:520
31936995530,15cyclictest16756-21runrttasks12:26:080
31936995528,16cyclictest6154-21/usr/sbin/munin07:35:150
31936995511,13cyclictest14975-21/usr/sbin/munin12:20:170
3193699549,14cyclictest10906-21/usr/sbin/munin12:05:160
3193699548,16cyclictest15069-21/usr/sbin/munin08:10:190
3193699548,16cyclictest12388-21df_inode10:05:120
3193699527,14cyclictest29281-21/usr/sbin/munin09:05:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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