[Zope] Large jumps of memory use increase, and seeking overall understanding of memory use

[Jens Vagelpohl]

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On 25 Feb 2007, at 19:44, Maciej Wisniowski wrote:

> I've not seen whole thread so sorry if I missed something.
>
>> there were requests for our
>> front page and apparently everything that accompanies it in Plone,
>> i.e. the Plone scripts.jss, the style sheets, bunch of icon gifs,
>> image thumbs the logo.jpg, etc.
> Maybe this is your specific configuration for tests, or something that
> you are aware of (if so then sorry for telling you something obvious)
> but in general things like css, js, images should be cached and not
> served (always) directly by Zope/Plone instance. Properly
> set up caching is a incredible performance boost. If you have no
> caching then serving all this stuff from zope may also cause bigger  
> RAM
> usage as all these objects are read into memory by Zope when they're
> 'touched'.

Serving from cache still means they need to be touched at least once  
to get them into the cache, and (in case of normal caching behavior)  
they will be touched again once the cached record expires. Caching  
will not make any difference to memory behavior I'd say.

jens



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