[Zope3-Users] Re: Performance

[David Johnson]

Okay. I think I figured it out. It seems that images and large objects are
the main culprit.  We have very few images, mainly just icons for the
content types and tabs.  

I discovered this by using lynx and with IE disabling images.  

So the new question is: how do I speed up image downloading? I'm guessing
this has something to do with the ZODB?


> -----Original Message-----
> From: zope3-users-bounces+djohnson=jsatech.com at zope.org [mailto:zope3-
> users-bounces+djohnson=jsatech.com at zope.org] On Behalf Of Philipp von
> Weitershausen
> Sent: Sunday, August 27, 2006 5:46 AM
> To: zope3-users at zope.org
> Subject: [Zope3-Users] Re: Performance
> 
> David Johnson wrote:
> > Good morning. I've built and application for Zope 3 and it seems to run
> > fairly slow (the logs show 2-5 seconds for a single page load).  The
> > graphic usage is relatively low (I've tested the same html file in PHP
> > and the speed is 0.10-0.20 seconds).
> 
> I'm not sure what "graphics usage" and "testing the same html file in
> PHP" are supposed to mean. I also don't understand what such a test is
> supposed to show.
> 
> There can be numerous bottlenecks in a Zope application. Rendering Page
> Templates (which admittedly are not the fastest templating mechanism in
> the world) is only one. Having unit test and integration tests for your
> components can make it a lot easier to track down such bottlenecks. The
> test runner also has a profiling option (--profile) that I might help
> you show where you spend most of your time. It's a good idea to combine
> this with --repeat=N so that the tests are run several times in a row
> and will outweigh the overhead spent in the test runner in the statistics.
> 
> Philipp
> 
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