May 2005 - Zope - Zope lists

RE: [Zope] high loads, more threads, spinning wheels
by Jim Abramson 02 May '05

02 May '05

Can this be taken to mean that: - the practical maximum number of threads to run your single (non-ZEO) zope instance is {number of zodb connections in pool} else you risk deadlock if yes, would upping the number of ZODB connections effectively raise the ceiling - e.g. 12 ZODB connections -> 12 threads should perform properly ? Is increasing the number of ZODB cx's possible, let alone advisable? (why the default of 7 - not 6 or 8?) More concretely, is there any good way to increase the request-handling capacity of a standalone instance, beyond the limits imposed by the defaults, without deploying ZEO? > > To put it in a very simple way, you should not tweak the > threads setting unless you really know what you are doing. If > your goal is performance the usual way of going about that is > to run ZEO and add ZEO clients as needed. > > You're bumping into the very simple fact that there are two > items interacting badly: Threads and the connections in the > Zope database connection pool. A thread, under normal > circumstances, can only do work if it has a connection to > work with, and wwill only release the connection when the > request is finished. There are 7 connections in the pool by default. > > jens >

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upload into a ZObject
by u1207440 01 May '05

01 May '05

Does anyone know how to upload a file or an image into a ZObject? I have created a simple ZClass that makes ZObjects to simulate book information like title, author, etc. I have selected to upload images and files into the ZObject, but I don't have a clue what dtml codes I should use to do that. Can anyone give me some pointers?? Also, if I have a book object that was stored in either one of two folders a and b (assuming don't know where) and I need to get its internal information like the book title and author, how do I look for it using dtml??

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Security issues
by cla 01 May '05

01 May '05

Hi! Im developing a portal using, zope and i had been some problems with the security of some template pages that I have created. Those pages are accesible just puting the correct path in the url, even if they are only for manager access. I have already try the security tabs that are associated to witch document, but with no sucess. What can i do to resolve this big problem. thanks SMS GRÁTIS do seu PC para qualquer rede nacional (TMN, Vodafone, Optimus e PTC). Basta instalar o SAPO Messenger e adicionar amigos! Vá agora a : http://messenger.sapo.pt/sms/

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