[Zope] Max Connections

[Pascal Peregrina]

cache-size is the max number of objects each connection will try to keep in
memory.

You can see how it is currently performing when you go to the ZMI -> Control
Panel -> Database Management -> main -> Cache Parameters
Each line of the table is a connection of the pool.
The total number of active an non active objects limited by the "cache-size"
param.
If you see, during normal operation, that most of the connections are
reaching that limit, then you could try to increase it.
But be careful not to run out of Memory ;)

For ZEO users, there may be another parameter to change if you modify the
cache-size param, which is the cache-size param within the
<zeoclient></zeoclient> section. This param, although it has the same name,
means something completely different.

But this does not apply to the below example that uses a filestorage for the
ZODB.

Pascal

-----Message d'origine-----
De : zope-bounces+pperegrina=lastminute.com at zope.org
[mailto:zope-bounces+pperegrina=lastminute.com at zope.org]De la part de
Germer, Carsten
Envoyé : vendredi 3 juin 2005 13:11
À : zope at zope.org
Objet : RE: [Zope] Max Connections


Yay, fine, thanks!
And while we're at it:
What exactly does "cache-size 8000" do?
8000 what? Objects, Kilobytes? Per connection in Pool size or over all?
Can someone point me out to a document explaining that?

/Carsten


>-----Original Message-----
>From: Janko Hauser [mailto:jhauser at zscout.de] 
>Sent: Friday, June 03, 2005 1:06 PM
>To: Germer, Carsten
>Cc: zope at zope.org
>Subject: Re: [Zope] Max Connections
>
>
>
>Am 03.06.2005 um 12:54 schrieb Germer, Carsten:
>
>> Pascal,
>> Would you be so kind to send the <zodb>-part of your config?
>> I Increased the zserver-threads for exactly the mentioned reasons  
>> but I was not aware of the "connectio pool"-parameter, nor can I  
>> find it anywhere in my zope.conf :)
>
>Carsten look into lib/python/ZODB/component.xml There are all ZConfig  
>directives defined and their defaults. From this I would assume the  
>following ZODB config
>
><zodb_db main>
>     # Main FileStorage database
>     <filestorage>
>       path $INSTANCE/var/Data.fs
>     </filestorage>
>     mount-point /
>     cache-size 8000
>     pool-size 15
></zodb_db>
>
>HTH,
>
>__Janko
>
>
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