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2025-11-07 - 19:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack9slot8s.osadl.org (updated Fri Nov 07, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501040,0irq/46-4a1000000-21swapper07:08:490
81950920,0irq/47-4a10000012217-21ssh10:45:000
81950890,0irq/47-4a10000031251-21sshd09:04:210
81950880,0irq/47-4a10000031555-21ssh11:26:030
81950870,0irq/47-4a10000030570-21latency_hist10:14:590
81950860,0irq/47-4a10000024377-21sshd08:19:200
81950860,0irq/47-4a10000023397-21apt-get10:00:000
81950850,0irq/47-4a1000009904-21sshd09:31:230
81950850,0irq/47-4a1000005057-21ssh09:21:070
81950850,0irq/47-4a10000031764-21ssh10:17:280
81950850,0irq/47-4a10000031008-21ssh11:25:020
81950850,0irq/47-4a10000029653-21munin-run08:54:540
81950850,0irq/47-4a10000028398-21ssh11:19:320
227482858,0sleep022753-21ssh11:07:240
81950840,0irq/47-4a1000004738-21rm11:38:110
81950840,0irq/47-4a10000018679-21ssh12:07:510
81950840,0irq/47-4a10000012338-21ssh10:45:040
81850840,0irq/46-4a1000008917-21ssh11:47:010
81850840,0irq/46-4a1000003480-21ssh10:26:150
81950830,0irq/47-4a10000020642-21rm09:54:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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