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Re: 1.7 Performance via HTTP

From: Justin Erenkrantz <justin_at_erenkrantz.com>
Date: Wed, 11 May 2011 23:12:29 -0700

On Wed, May 11, 2011 at 4:40 PM, Mark Phippard <markphip_at_gmail.com> wrote:
> The story using Serf is not as good.  There are a few places where it
> is fastest, namely merge.  But there are other cases where it is
> dramatically slower.  The number of HTTP requests with Serf is 80,990.
>  Looking at the numbers, it seems like Serf is slowest when it comes
> to the areas where it issues all those GET requests, such as checkout
> and update.  On other operations it is more inline with Neon.  Maybe

r1102173 will help slightly when there are lots of checkouts as
ra_serf wasn't asking for the REPORT response to be compressed - doing
that saves a fair bit of traffic before the parallelization can begin.
 (86k down to 16k for a checkout of notes/.)

I'm also assuming you've appropriately configured your httpd server...see:


FWIW, in some quick local real-world tests, I see ra_neon and ra_serf
being within margin of error on checkouts - so I have a hunch it might
be something more pathological that a test suite would hit. I'm sure
those of us in Dublin or Berlin can look more. I'll be in Dublin this
weekend, but I won't be in Berlin... -- justin
Received on 2011-05-12 08:13:05 CEST

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