On Tue, 14 Aug 2018, Jan Ehrhardt via curl-library wrote:

> Thanks for the stats. It indicates that my choice for 320 KB in the iOS app
> (using sftp) is quite good.

I would like us to...

1. Change to alloc-on-demand for this buffer. It is used for a few non-upload
things, but it only needs to be this big for actual uploads, and most
transfers are not. That'll save (almost) 16KB for all download-only handles.

2. Enlarge the default upload buffer size to 64KB.

3. Add a CURLOPT_UPLOADBUFFERSIZE option that allows users to set their
preferred size, from 16KB up to perhaps a few megabytes.

> I remembered reading something about this, but it doesn't seem related (and
> was resolved anyway). But maybe it gives a clue:
>
> https://github.com/icing/mod_h2/issues/130

Okay! I'm also quite sure we have some optimizations left to do in the libcurl
side of the HTTP/2 transfers...

-- 
  / daniel.haxx.se
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