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Re: FTP upload speed problem and buffer size

From: Dan Fandrich <dan_at_coneharvesters.com>
Date: Thu, 11 Oct 2007 10:47:39 -0700

On Thu, Oct 11, 2007 at 06:20:53PM +0200, Alessandro Vesely wrote:
> Looking at the single data packets sent, I could see that the system ftp
> tool always sent 1460 bytes per TCP packet, except the last that had 1082
> (5523 total packets sent, including 3 empty handshake ones.) Whereas curl
> sends a packet with 324 bytes after every 11 1460 bytes packets (thus
> totaling 5906 packets sent, including 2+2 empty ones --for passive handshake.)

That's the tradeoff that --tcp-nodelay makes: reduced latency but increased
number of packets.

>>> Dan

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Received on 2007-10-11