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2024-05-25 - 07:55

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 Sat May 25, 2024 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
250022559611,5568sleep024968-21apt-get21:20:070
250022559611,5568sleep024968-21apt-get21:20:070
2953527786,760sleep129541-21ntpq19:50:361
1074726377,616sleep110788-21ntpq00:00:051
27823257617,543sleep327890-21/usr/sbin/munin19:45:093
2385524680,12sleep20-21swapper/222:59:572
307523738,329sleep13091-21grep20:09:581
5765234971,263sleep15796-21fschecks_count23:44:551
5765234971,263sleep15796-21fschecks_count23:44:551
9809230123,255sleep09923-21grep20:30:120
15164227752,28sleep10-21swapper/119:09:411
28092225022,29sleep10-21swapper/123:14:351
19753223853,162sleep119783-21modprobe21:04:331
25202223617,200sleep025256-21sort23:04:490
32497223311,201sleep132516-21latency_hist21:44:351
17087222963,153sleep117150-21sendmail_mailst00:20:041
17087222963,153sleep117150-21sendmail_mailst00:20:041
21547220910,184sleep121686-21unixbench_multi19:25:121
1630220015,167sleep21779-21sed21:49:362
19430219543,82sleep10-21swapper/119:20:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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