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Windows Low Fragementation Heap yields speedup of ~15%
by Gfeller Martin 14 Feb '05

14 Feb '05

Dear all, I'm running a large Zope application on a 1x1GHz CPU 1GB mem Window XP Prof machine using Zope 2.7.3 and Py 2.3.4 The application typically builds large lists by appending and extending them. We regularly observed that using a given functionality a second time using the same process was much slower (50%) than when it ran the first time after startup. This behavior greatly improved with Python 2.3 (thanks to the improved Python object allocator, I presume). Nevertheless, I tried to convert the heap used by Python to a Windows Low Fragmentation Heap (available on XP and 2003 Server). This improved the overall run time of a typical CPU-intensive report by about 15% (overall run time is in the 5 minutes range), with the same memory consumption. I consider 15% significant enough to let you know about it. For information about the Low Fragmentation Heap, see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/memory/bas… Best regards, Martin PS: Since I don't speak C, I used ctypes to convert all heaps in the process to LFH (I don't know how to determine which one is the C heap). ________________________ COMIT AG Risk Management Systems Pflanzschulstrasse 7 CH-8004 Zürich Telefon +41 (44) 1 298 92 84 http://www.comit.ch http://www.quantax.com - Quantax Trading and Risk System

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Using custom comparasion function in sequence.sort
by Hong Yaun 14 Feb '05

14 Feb '05

I'd like to use a custom comparasion function in a PythonScript to sort certain objects, using the sequence.sort utility function. In the doc-string for sort in sequence/SortEx.py, there is a line about custom function: - "xxx" -- a user-defined comparison function So I defined a comparasion function in the PythonScript and passed its name to sort. However, when the script is called, I got the error: * Module DocumentTemplate.sequence.SortEx, line 66, in sort * Module DocumentTemplate.sequence.SortEx, line 175, in make_sortfunctions AttributeError: 'NoneType' object has no attribute 'getitem' A closer look at make_sortfunctions shows that it tries to find the custom comparasion in the name space '_', which is default to None in sort(). So it seems I need only supply the correct name space as the third, undocumented parameter to sequence.sort for it to find my comparasion function. I tried to use globals() but this seems to be unavailable in a PythonScript. So the question is, how to pass the correct name space containing my comparasion function to the sort() function? My PythonScript code segment looks like below: results = ... def my_cmp(x, y): return cmp(x,y) sort_on = (('property', 'my_cmp', 'asc'),) return sequence.sort(results, sort_on) Thanks for advices. Best Regards, Hong Yuan

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RE: [Zope] RE: Dynamically generating JavaScript
by Andy Yates 14 Feb '05

14 Feb '05

Yes, you are right that works fine and is cleaner. My point is that Zope does not seem to render tal statements between <script> tags. They get ignored. This works <script type="text/javascript" tal:content="here/myscript_js"></script> but this does not. <script type="text/javascript" > <tal:block tal:content="here/myscript_js" /> </script> Andy > -----Original Message----- > From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] On Behalf Of Duncan Booth > Sent: Monday, February 14, 2005 9:04 AM > To: zope(a)zope.org > Subject: [Zope] RE: Dynamically generating JavaScript > > Andy Yates wrote: > > > When I've had to include dynamic javascript I write a python method that > > prints the whole script block and then call that from a tal:block. > > > ><tal:block tal:replace="structure python: here.myscript_js()" /> > > > > myscript_js would look like this > > > > print """<script> > > var1 = 1; > > var2 = 2; > > var3 = 3; > ></script>""" > > > > return printed > > > > Wouldn't it make more sense to do: > > <script type="text/javascript" tal:content="here/myscript_js"></script> > > and just have myscript_js print the Javascript without the enclosing script > tags? > > for i in range(1,4): > print "var%d = %d" % (i, i) > > return printed > > Or even better, if your script contents don't depend on values from the > current request use: > > <script type="text/javascript" src="myscript_js"></script> > > which keeps the Javascript entirely outside the html so you don't have to > worry about embedded angle brackets. > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev )

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RE: [Zope] ZODB config question
by Pascal Peregrina 14 Feb '05

14 Feb '05

Thanks. Pascal -----Message d'origine----- De : Tim Peters [mailto:tim.peters@gmail.com] Envoyé : lundi 14 février 2005 16:51 À : Pascal Peregrina Cc : zope(a)zope.org Objet : Re: [Zope] ZODB config question [Pascal Peregrina] > Ok. Is the pool-size option usable for Zeo connections ? This section of ZODB's component.xml applies to anything/everything returned by DB.open(): <sectiontype name="zodb" datatype=".ZODBDatabase" implements="ZODB.database"> <section type="ZODB.storage" name="*" attribute="storage"/> <key name="cache-size" datatype="integer" default="5000"/> <key name="pool-size" datatype="integer" default="7"/> <key name="version-pool-size" datatype="integer" default="3"/> <key name="version-cache-size" datatype="integer" default="100"/> </sectiontype> The underlying storage isn't relevant (be it FileStorage, a ZEO ClientStorage, DirectoryStorage, ..., the DB constructor is passed a storage, but all the options above apply to DB.open(), and affect the storage-independent in-memory cache used by the Connection object returned by DB.open()). > I am trying to increase the number of ZServer threads, so I guess I need to > increase the number of Zeo connections too. > (I use Zope 2.7.4) Sorry, I don't know anything about ZServer; it would be good if someone who does replied to this part. ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **********************************************************************

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RE: [Zope] ZODB config question
by Pascal Peregrina 14 Feb '05

14 Feb '05

Ok. Is the pool-size option usable for Zeo connections ? I am trying to increase the number of ZServer threads, so I guess I need to increase the number of Zeo connections too. (I use Zope 2.7.4) Thanks. Pascal -----Message d'origine----- De : Tim Peters [mailto:tim.peters@gmail.com] Envoyé : lundi 14 février 2005 16:09 À : Pascal Peregrina Cc : zope(a)zope.org Objet : Re: [Zope] ZODB config question [Pascal Peregrina] > I would like to know what is the difference between these 2 ZODB config > params : > <key name="pool-size" datatype="integer" default="7"/> > <key name="version-pool-size" datatype="integer" default="3"/> Before ZODB 3.3.1, there's a hard limit on the number of simultaneously open DB Connections. Well, there are two hard limits, one for DB.open() calls that pass a non-empty string as the value of the optional version= argument (that limit is version-pool-size), and the other is for all other DB.open() calls (connections not "in a version", & that limit is pool-size). If you don't use versions (which are, as Chris said, deprecated), version-pool-size has no effect. If you try to open more Connections than the appropriate limit, the DB.open() call will block until a Connection of the requested flavor (version versus non-version) is closed. Because the _usual_ outcome in this case is that the call blocks forever, in ZODB 3.3.1 there are no hard limits here (although these config options still exist, and exceeding them logs advisory messages). ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **********************************************************************

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ZODB config question
by Pascal Peregrina 14 Feb '05

14 Feb '05

Hi, I would like to know what is the difference between these 2 ZODB config params : <key name="pool-size" datatype="integer" default="7"/> <key name="version-pool-size" datatype="integer" default="3"/> Thanks. Pascal ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com **********************************************************************

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RE: [Zope] Dynamically generating JavaScript
by Andy Yates 14 Feb '05

14 Feb '05

When I've had to include dynamic javascript I write a python method that prints the whole script block and then call that from a tal:block. <tal:block tal:replace="structure python: here.myscript_js()" /> myscript_js would look like this print """<script> var1 = 1; var2 = 2; var3 = 3; </script>""" return printed Andy > -----Original Message----- > From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] On Behalf Of Hong Yaun > Sent: Monday, February 14, 2005 8:31 AM > To: 'zope(a)zope.org' > Subject: [Zope] Dynamically generating JavaScript > > I have a page template within with I would like to embed some > dynamically generated JavaScript. Say the following sample snippet: > > <script> > var1 = 1; > var2 = 2; > var3 = 3; > </script> > > The 'obvious' approach I came up with is the follow zpt code: > > <script> > <tal:block tal:repeat="i python:range(1,4,1)"> > var<span tal:replace="i"/> = <span tal:replace="i"/> > </tal:block> > </script> > > However, this code doesn't even compile correctly, with the error: > > TAL.HTMLTALParser.NestingError: Open tag <script> does not match close > tag </tal:block> > > If instead I replace the <script> and </script> tags with things like > <html> and </html>, the code compiles. Obviously, I am missing a very > important point about the way zpt works, but I can't find what. Maybe it > is not suitable for this kind of task and I shall use DTML or > PythonScript instead? > > Any hint would be appreciated. > > Best Regards > Hong Yuan > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev )

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Dynamically generating JavaScript
by Hong Yaun 14 Feb '05

14 Feb '05

I have a page template within with I would like to embed some dynamically generated JavaScript. Say the following sample snippet: <script> var1 = 1; var2 = 2; var3 = 3; </script> The 'obvious' approach I came up with is the follow zpt code: <script> <tal:block tal:repeat="i python:range(1,4,1)"> var<span tal:replace="i"/> = <span tal:replace="i"/> </tal:block> </script> However, this code doesn't even compile correctly, with the error: TAL.HTMLTALParser.NestingError: Open tag <script> does not match close tag </tal:block> If instead I replace the <script> and </script> tags with things like <html> and </html>, the code compiles. Obviously, I am missing a very important point about the way zpt works, but I can't find what. Maybe it is not suitable for this kind of task and I shall use DTML or PythonScript instead? Any hint would be appreciated. Best Regards Hong Yuan

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Ape backwards
by martin f krafft 14 Feb '05

14 Feb '05

I wonder if there exist examples of how Ape was used to integrate an existing RDB into Zope. The webpage says: Ape, the Adaptable Persistence Engine, adapts Python objects to storage on the filesystem, in relational databases, or practically anywhere else. But I want to do it the other way... adapt Python objects to represent data in a relational database. Do you have any pointers about this? Or other products that could be of interest? For reference: http://thread.gmane.org/gmane.comp.web.zope.plone.user/30269 -- martin; (greetings from the heart of the sun.) \____ echo mailto: !#^."<*>"|tr "<*> mailto:" net@madduck invalid/expired pgp subkeys? use subkeys.pgp.net as keyserver! spamtraps: madduck.bogus(a)madduck.net "in just seven days, i can make you a man!" -- the rocky horror picture show

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ssl certificate based authentication
by BORGULYA Gergely 14 Feb '05

14 Feb '05

I would like to have the users of my site authenticated via ssl certificates. Authentication works well with apache2, and I would like to have my zope working behind the proxy module of apache. I would not find it neccessary to leave the authentication to be done by apache, but I expect it to be simplier. I've found a product (SSL Certificate Authenticator Product), that uses apache's authentication, but it is only able to pass userinformation via pcgi connection to zope. I could not find any other zope product for this problem, however, this way is mentioned in the zope Wikis, as a common authentication method. (http://zope.org/Wikis/DevSite/Projects/ComponentArchitecture/StandardAuthen…) Is there a common (or uncommon) solution for this case? The second level of my question is, how to do all this if I need the advantages of the Groups User Folder? thanks, ger

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