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From Manuel Lemos <>
Subject Re: Logging Subversion client HTTP requests
Date Mon, 01 Aug 2011 07:16:49 GMT
Hello Andreas,

on 07/31/2011 12:34 AM Andreas Krey said the following:
> The interesting point is that as far as I know there is a complete change
> in the http-level protocol coming up, to avoid the massive round-trip
> count the current method needs. (But that's a maintenance nightmare
> for libsvn as well as for anybody else writing a bare-net client.)

Now that you mention that, while analyzing strace dumps, I noticed a lot 
of repeated (like 3 or 4) PROPFIND requests to the exact same URLs using 
the exact same request parameters.

Maybe I am missing something but it seemed that those repeated requests 
were redundant and make svn program much slower than it should. Could 
that change you are talking about be meant to address these redundant 
repeated requests?

Anyway, in my implementation I did not do any repeated requests and I 
can retrieve the information I want apparently much faster in PHP than 
using the svn program. So I wonder if could be missing anything.

Anyway, another odd thing is that the client always sends a request 
header saying it can handle HTTP compression but SubVersion servers seem 
to never compress responses.

Given than a typical gzip encoding can compress text data about 5 times, 
it seemed to me there is a great opportunity to make SubVersion HTTP 
server accesses much faster, but that opportunity is not being addressed 
because SubVersion HTTP servers do not compress responses. Again I maybe 
missing something here.


Manuel Lemos

JS Classes - Free ready to use OOP components written in JavaScript

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