On 01/29/14 14:26, Adrian Chadd wrote:
> On 29 January 2014 13:51, Colin Percival <cperc...@freebsd.org> wrote:
>> FWIW, the performance problems with proxies are limited to HTTP proxies
>> which don't speak HTTP/1.1.
> Did you / others ever actually benchmark this?
The fact that performance sucks when proxies break HTTP pipelining? Yes,
but it's also implied by the RTT/request limit for non-pipelined requests.
> I know that Squid supports pipelined requests but only a handful
> (defaulting to 1) at a time, as the actual error semantics for
> HTTP/1.1 pipelining wasn't well defined.
I'm not sure what the poorly defined error semantics are, but I suppose
that doesn't matter. Does Squid now reply with HTTP/1.1 headers? The
phttpget code won't even try to pipeline requests unless it sees that --
as required by the HTTP specification.
> So flipping it around - which intermediaries that are actually in use
> by companies and such actually support pipelining at the level that
> you're doing it?
I don't know. People usually don't tell me when things work.
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