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https://issues.apache.org/jira/browse/PROTON-2146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Clifford Jansen resolved PROTON-2146.
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Fix Version/s: proton-c-0.30.0
Resolution: Fixed
> Reduce memory per connection
> ----------------------------
>
> Key: PROTON-2146
> URL: https://issues.apache.org/jira/browse/PROTON-2146
> Project: Qpid Proton
> Issue Type: Improvement
> Components: proton-c
> Affects Versions: proton-c-0.29.0
> Reporter: Clifford Jansen
> Assignee: Clifford Jansen
> Priority: Major
> Fix For: proton-c-0.30.0
>
>
> The transport currently starts with 2 16K buffers: one for input and one for
> output, and they grow from there depending on load.
> Instrumenting with Quiver and Qpid dispatch router shows that these starting
> buffer sizes can be reduced to 8K without detectable performance degradation.
> This can reduce memory load by close to 16K per connection for processes with
> large numbers of lightly loaded connections. Connections with heavier load
> will still grow as large as before, but with one extra 8K->16K growth step in
> buffer size.
> Reducing to 4K does lead to a degradation of several percent and further
> reductions to 2K leads to a degradation closer to 20%. So smaller starting
> sizes are not considered for now, but reworking the transport growth strategy
> might make it possible in future.
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