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https://issues.apache.org/jira/browse/HTTPCLIENT-1509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13997487#comment-13997487
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Oleg Kalnichevski commented on HTTPCLIENT-1509:
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bq. DefaultHttpResponseParser allocates a CharArrayBuffer(128), which ends up
resulting in a 128-byte InputStream read.
Are you absolutely sure about that? The lineBuf which is indeed allocated to be
128 bytes only in the beginning is used to read *individual header lines* from
the session input buffer (not the underlying socket stream). See
SessionInputBufferImpl. Not to mention that the line buffer can grow
dynamically if needed.
Oleg
> Increase DefaultHttpResponseParser buffer size
> ----------------------------------------------
>
> Key: HTTPCLIENT-1509
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1509
> Project: HttpComponents HttpClient
> Issue Type: Improvement
> Components: HttpConn
> Affects Versions: 4.3.3
> Reporter: Chris Heald
> Priority: Minor
> Labels: performance
>
> DefaultHttpResponseParser allocates a CharArrayBuffer(128), which ends up
> resulting in a 128-byte InputStream read. Due to the typical size of an HTTP
> response's headers, this ends up doing tens of stream reads per document read.
> Increasing the size of this buffer to something more traditional like 4096
> substantially improved the performance of HttpClient in my high-load reads.
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