[Zope3-Users] Re: Performance

[Philipp von Weitershausen]

Tom Dossis wrote:
> David Johnson wrote:
>> 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?
> 
> Hi David,
> 
> Here's some 'benchmarks' for you to compare against.
> 
> I accessed images both as resources and content objects.  Though there
> was some difference b/w them it wasn't by any order of magnitude....
> 
> I used a recent Zope3 version from svn.zope.org.  From the results it
> looks like data bandwidth may be a factor to consider.
> 
> Also my benchmark client is written in python using twisted and it also
> adds it's own (significant) overhead.

I can recommend the Apache benchmarking tool ab [1] for creating easily
comparable and reproduceable benchmarks.

[1] http://httpd.apache.org/docs/2.0/programs/ab.html

Philipp