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2025-11-15 - 20:41

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 20 highest latencies:
System rack4slot6s.osadl.org (updated Sat Nov 15, 2025 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
93122560,2sleep0932-21latency12:35:220
214742990,2sleep021475-21date11:50:010
47692970,3sleep04792-21cpu10:45:130
63822930,3sleep06415-21netstat08:45:220
308422930,3sleep030783-21/usr/sbin/munin10:20:170
190082870,4sleep018988-21cron09:35:020
296532820,4sleep029697-21grep12:20:250
1318528221,36sleep013254-21/usr/sbin/munin07:05:250
219322680,2sleep021933-21cat07:40:160
131042660,2sleep013103-21users11:15:320
13982996427,17cyclictest0-21swapper08:58:160
13982996326,26cyclictest17022-21/usr/sbin/munin11:30:350
13982996034,15cyclictest23402-21/usr/sbin/munin07:45:210
1398299599,18cyclictest17839-21/usr/sbin/munin09:30:170
1398299599,17cyclictest23165-21chrt11:55:290
1398299598,17cyclictest890-21/usr/sbin/munin10:30:170
1398299597,18cyclictest26141-21mailstats07:55:270
1398299597,17cyclictest32367-21/usr/sbin/munin08:20:190
1398299589,20cyclictest16599-21df09:25:130
1398299589,14cyclictest3878-21ntp_states08:35:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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