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2025-02-11 - 03:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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.

Note that this system runs a non-RT kernel.
Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 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 rackbslot7s.osadl.org (updated Tue Feb 11, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
188412193314,1902sleep318843-21ntp_states00:08:223
127412188423,1845sleep18479-21kworker/u8:323:48:051
11407275915,727sleep011417-21/usr/sbin/munin19:53:120
2181226239,601sleep321694-21kworker/3:222:22:053
4916254714,517sleep34938-21df19:33:123
22631248112,453sleep122697-21sendmail_mailqu00:23:181
894124698,446sleep19090-21awk19:43:281
20690240815,371sleep120829-21unixbench_singl00:13:251
20690240815,371sleep120829-21unixbench_singl00:13:251
10956239410,344sleep110960-21acpi23:43:041
9870234913,321sleep09956-21/usr/sbin/munin19:48:160
43992325109,25sleep10-21swapper/121:13:261
22607229813,268sleep022615-21ntp_states22:23:150
9186227617,186sleep10-21swapper/121:33:131
9186227617,186sleep10-21swapper/121:33:131
253762273105,57sleep10-21swapper/122:33:141
28496227212,245sleep028503-21df_inode20:48:130
3251022558,234sleep132560-21unin-run23:02:541
25801225464,132sleep125857-21sendmail_mailqu20:38:241
21927224729,73sleep122056-21ls22:22:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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