[pLog-svn] resserver usage

[Oscar Renalias]

I may try with fpassthru later on, but I am not sure whether it will
make any difference. In the tests I run I noticed that in the context
of 100 requests, usign fread() was only 1 second slower than using
direct URL access so this probably means that the problem is
elsewhere.

Right now resserver.php needs to load a bunch of classes, validate
parameters, execute the pipeline for security stuff, load the plugin
manager and throw two events, load the blog id based on the name if
we're using subdomains, parse nice album names, etc. As soon as I
removed some of that sutff, we managed to save 15 seconds in 100
requisitions and over 1 minute when using altresserver.php, which only
implements the best case scenario: no subdomains and the blog id and
the resource name are in the request (no need to load any extra
classes and parse anything)

What I am trying to say is that the bottleneck isn't the file-related
function calls but all what we have to do before we even get there.

On 10/5/06, Jon Daley <plogworld at jon.limedaley.com> wrote:
>         You might want to include fpassthru in your tests - that is
> supposed to be the "recommended" way of doing this sort of thing.  I
> couldn't tell any difference when I changed the current resserver to use
> it though.
>
>
> On Thu, 5 Oct 2006, Oscar Renalias wrote:
> > Some more benchmarks I was working on today, tested with curl loading the
> > same URL 100 times (a 450kb JPEG file)
> >
> > testfopen.php
> > -------------
> > real    0m11.127s
> > user    0m1.205s
> > sys     0m1.893s
> >
> > direct url
> > ----------
> > real    0m10.170s
> > user    0m1.171s
> > sys     0m1.846s
> >
> > resserver.php 1.1.1
> > -------------------
> > real    1m39.753s
> > user    0m1.209s
> > sys     0m2.000s
> >
> > optimized resserver.php 1.1.1
> > -----------------------------
> > real    1m24.475s
> > user    0m1.210s
> > sys     0m2.007s
> >
> > altresserver.php
> > ----------------
> > real    0m36.123s
> > user    0m1.230s
> > sys     0m2.012s
> >
> > testfopen.php is a test to see how fast a raw fopen()+fread() is in PHP, and
> > it's a useless version of resserver.php. "Direct url" downloads the URL via
> > the web server, "resserver.php" is the default version of resserver.php
> > included in 1.1.1, "optimized resserver.php" very similar to the code in
> > 1.1.1 but removed a few things that could potentially be removed, and finally
> > "altresserver.php" is a very small version of resserver.php that still loads
> > a few classes (like GalleryResources and GalleryResource)
> >
> > Not much to comment on these figures, other than we're currently using the
> > slowest method and that direct url would still be the preferred way.
> >
> > At this point I am not sure if it's a good idea to create complex rewrite
> > rules or use obscure modules that no user will probably ever have available,
> > and instead we should concentrate on doing it properly once and for all. Some
> > of these workarounds could be used as temporary solutions while we fix what
> > is fundamentally slow (or broken), and that is the way in which we handle and
> > serve files.
> >
> > By the way I've attached the files I used for these tests, although if you
> > want to run them you'll need to make a few changes (file paths, URLs, etc)
> >
>
> --
> Jon Daley
> http://jon.limedaley.com/
>
> Teachers open the door, but you must enter by yourself.
> -- Chinese Proverb
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