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2025-08-30 - 01:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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: 50.5 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack5slot7s.osadl.org (updated Fri Aug 29, 2025 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31403224462216,89sleep00-21swapper07:09:460
314719916012,25cyclictest12948-21irqstats08:30:410
314719916011,64cyclictest15781-21timerwakeupswit08:46:040
314719915912,123cyclictest7271-21wc07:55:550
31471991589,108cyclictest10593-21ls11:35:240
314719915716,116cyclictest30804-21df10:20:290
314719915713,118cyclictest9354-21cat08:07:040
31471991569,121cyclictest31448-21apt-get07:11:400
314719915617,99cyclictest21528-21munin-run09:25:020
314719915515,23cyclictest32407-21df_inode10:30:300
314719915512,118cyclictest27542-21awk10:00:490
314719915416,22cyclictest2273-21irqstats07:25:400
314719915414,117cyclictest18307-21apt09:05:000
314719915414,114cyclictest7761-21grep11:15:580
314719915411,119cyclictest8292-21wc08:01:020
314719915339,90cyclictest3282-21latency10:50:440
314719915321,29cyclictest3142-21memory07:30:460
314719915316,113cyclictest12151-21irqstats08:25:410
314719915314,98cyclictest27950-21apt-get10:05:410
314719915314,101cyclictest22629-21cat09:30:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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