PHP cURL upload speed

I made a script that uploads files to different servers using PHP cURL and the problem is that it eats all my upload bandwidth and my Apache server开发者_StackOverflow中文版 does not respond as I would like.

The call is made from the PHP-CLI and can not use any Apache bandwidth, limiting bandwidth.

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Have you tried the CURLOPT_READFUNCTION option? Creating your own function for reading the data will allow you also to throttle the bandwidth.

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Apache doesn't have any bandwidth limits. It's your network's bandwidth limit. Consider not to spam other sites, and your Apache server would always respond quickly.