yaws

[Sean Hinde]

Hi,

> Great - I'm interested in the 2500 pages/sec figure - I have zero
> ideas is this good - how does it compare with commercial 
> things (like ASP) or free things like PHP???

This is pretty impressive yes. On my somewhat more humble 440MhZ Ultrasparc
I was getting 600 pages per second from yaws compared to 60 static pages per
second from Apache (using the apache benchmark program ab).

> Questions:
> 
> 1) Where does all the time go in serving up HTTP pages? 
>   
>    << the difference of 700 vs. 20,000 requests/second is
>       amazing - Is this just the time taken to parse the 
>       HTTP headers and dispatch the request? >>
> 
>    (interestingly my HTTP server needed 619/reductions to process
> a request - and the erlang term server took 28 reductions) - 

Well yaws uses the new http socket mode of gen_tcp (undocumented) so all
header parsing is done in the tcp driver - in other words it cheats horribly
:)

>   <aside> I  saw ballpark  figures of 50  pages/sec for ASP  servers -
> this seems way too low to be called high performance - are they really
> that bad?
>   </aside>

I'd say this is probably not far off the pace. It is also pretty much what
the existing inets can manage - though a quick profile reveals much time
spent in lists:flatten and other unfortunate places :(. The introduction of
a http socket mode must bode well for the future though..

Sean



NOTICE AND DISCLAIMER:
This email (including attachments) is confidential.  If you have received
this email in error please notify the sender immediately and delete this
email from your system without copying or disseminating it or placing any
reliance upon its contents.  We cannot accept liability for any breaches of
confidence arising through use of email.  Any opinions expressed in this
email (including attachments) are those of the author and do not necessarily
reflect our opinions.  We will not accept responsibility for any commitments
made by our employees outside the scope of our business.  We do not warrant
the accuracy or completeness of such information.