cURL / Mailing Lists / curl-library / Single Mail



From: Sanchay Harneja <>
Date: Thu, 8 Oct 2015 12:57:28 -0700

Actually you are right - I built a new libcurl with 4MB, but it didn't make
any difference. I'll have to dig deeper. Thanks for the response!

On Thu, Oct 8, 2015 at 12:03 PM, Daniel Stenberg <> wrote:

> On Thu, 8 Oct 2015, Sanchay Harneja wrote:
> We're using libcurl internally with guaranteed high bandwidth connections.
>> Is there a way to increase CURL_MAX_WRITE_SIZE to speed up data transfers?
> Are you saying you're seeing a big increase in transfer speeds by doing
> that? If so, I would like to get informed by some numbers.
> If you're only asking how to increase it: it is (still) a build-time
> constant so you define it to something larger than 16K when you build
> libcurl.
> It was set to 16K once after some basic testing when no real differences
> could be seen with slightly larger buffers. For years we've discussed
> introducing some sort of dynamic scheme that would allow it to get larger
> when requested and especially for certain protocols.
> --
> /
> -------------------------------------------------------------------
> List admin:
> Etiquette:

List admin:
Received on 2015-10-08