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Re: Easy Reuse across Multiple Multi Handles

From: Daniel Stenberg via curl-library <curl-library_at_cool.haxx.se>
Date: Wed, 29 Jul 2020 00:29:16 +0200 (CEST)

On Tue, 28 Jul 2020, Damon Earp wrote:

> I finally got time to sit down and try to figure out what is happening. The
> issue goes away when I set CURLMOPT_MAXCONNECTS. Before I was just setting
> CURLMOPT_MAX_HOST_CONNECTIONS and most of my connections would live for a
> few milliseconds, once MAXCONNECTS is set my reuse and connection duration
> increases.

I read this several times but I didn't understand the conclusion nor the
metrics shown.

The default size of the connection pool when using the multi interface is
described in the CURLMOPT_MAXCONNECTS man page (4 times the number of added
easy handles basically). If you want a larger, you of course need to set that
option to something higher.

If you enable verbose mode, libcurl will tell when it re-uses connections for
transfers. 

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Received on 2020-07-29