December 2002 - Zope

Help with Google
by working4aliving 12 Dec '02

12 Dec '02

When using Google to search on this list, which url should I use (to where?). I _know_ google is my friend...

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Re: Intel vs AMD
by Roel Van den Bergh 12 Dec '02

12 Dec '02

Here are some stats to add :-) Dell PowerApp 120 Intel Pentium III (Coppermine) Dual 1Ghz, 1GB PC133 ECC SDRAM running in single proccessor mode [root@root]# python /home/zope/2-5-0/lib/python2.1/test/pystone.py Pystone(1.1) time for 10000 passes = 0.87 This machine benchmarks at 11494.3 pystones/second [root@root]# python /home/Python-2.1.3/Lib/test/pystone.py Pystone(1.1) time for 10000 passes = 0.86 This machine benchmarks at 11627.9 pystones/second [root@root]# python /usr/lib/python1.5/test/pystone.py Pystone(1.1) time for 10000 passes = 0.85 This machine benchmarks at 11764.7 pystones/second [root@root]# python /usr/lib/python2.1/test/pystone.py Pystone(1.1) time for 10000 passes = 0.86 This machine benchmarks at 11627.9 pystones/second [root@root]# python /usr/local/lib/python2.1/test/pystone.py Pystone(1.1) time for 10000 passes = 0.87 This machine benchmarks at 11494.3 pystones/second [root@root]# python /usr/src/redhat/BUILD/Python-2.1.3/Lib/test/pystone.py Pystone(1.1) time for 10000 passes = 0.85 This machine benchmarks at 11764.7 pystones/second Roel.

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Zope + Apache + mod_proxy
by Dirk Datzert 12 Dec '02

12 Dec '02

Hi all, I have a strange connection problem with Zope + Apache + mod_proxy. Sometimes users click on links in their browsers (regardsless which browser: IE 5.5 or Netscape 4.7). The browser waits for data, but nothing comes back. If the user stopps the transfer and click on the link again the transfer will be done immediatly. Has anybody an idea what to do ? Regards, Dirk

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Re: [Zope] WYSIWYG Editors for Zope?
by peter sabaini 12 Dec '02

12 Dec '02

I'll keep it on the list if you dont mind... David Bear wrote: > On Thu, Dec 12, 2002 at 12:17:08AM +0100, Peter Sabaini wrote: > >>David Bear wrote: >>You can configure a "source port" where content won't get rendered. > [snip] > sorry to be ignorant, what does EFS do and where can I find it? EFS is kind of an Ftp filesystem for XEmacs (and Emacs too AFAIK); you open files with "C-x C-f /sabaini@localhost:/some/path" for instance. You should configure some things: ;; prevent emacs from making backup files on the server -- ;; emacs backs up by renaming the file and writing a new one, ;; and we want the original objects '(efs-make-backup-files nil) ;; i found this to be more stable and it also helps with firewalls '(efs-use-passive-mode nil) > a mountable davfs would be awesome. See http://dav.sourceforge.net/ I had no luck in running the new version though (the old one isnt available anymore it seems) - peter.

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Re: [Zope] Re: Intel vs AMD
by THoffman＠indtech.wa.gov.au 12 Dec '02

12 Dec '02

Gotta add my bit. People often give short shrift to Solaris/SPARC running python, and pystone isn't a real world test but. As you know python perf/pystone seems directly attributable to Mhz so on my Dual 750Mhz Sun 280R A single pystone is on this box is Pystone(1.1) time for 10000 passes = 1.25 This machine benchmarks at 8000 pystones/second Whereas 16 pystones running simultaneously on the same box (note increased loop count to 50000 to be sure all jobs are likely to impact each other) Pystone(1.1) time for 50000 passes = 6.31 This machine benchmarks at 7923.93 pystones/second Pystone(1.1) time for 50000 passes = 6.31 This machine benchmarks at 7923.93 pystones/second Pystone(1.1) time for 50000 passes = 6.33 This machine benchmarks at 7898.89 pystones/second Pystone(1.1) time for 50000 passes = 6.31 This machine benchmarks at 7923.93 pystones/second Pystone(1.1) time for 50000 passes = 6.31 This machine benchmarks at 7923.93 pystones/second Pystone(1.1) time for 50000 passes = 6.31 This machine benchmarks at 7923.93 pystones/second Pystone(1.1) time for 50000 passes = 6.3 This machine benchmarks at 7936.51 pystones/second Pystone(1.1) time for 50000 passes = 6.31 This machine benchmarks at 7923.93 pystones/second Pystone(1.1) time for 50000 passes = 6.31 This machine benchmarks at 7923.93 pystones/second Pystone(1.1) time for 50000 passes = 6.32 This machine benchmarks at 7911.39 pystones/second Pystone(1.1) time for 50000 passes = 6.33 This machine benchmarks at 7898.89 pystones/second Pystone(1.1) time for 50000 passes = 6.33 This machine benchmarks at 7898.89 pystones/second Pystone(1.1) time for 50000 passes = 6.33 This machine benchmarks at 7898.89 pystones/second Pystone(1.1) time for 50000 passes = 6.33 This machine benchmarks at 7898.89 pystones/second Pystone(1.1) time for 50000 passes = 6.33 This machine benchmarks at 7898.89 pystones/second Pystone(1.1) time for 50000 passes = 6.35 This machine benchmarks at 7874.02 pystones/second So what we see is a single instance python is not really running as fast as it could possibly, and that the increase in load for each new process is not linear. If the tasks where running as fast as the CPU can do the job, then 4 pystone jobs should each take twice as long as two. So whilst solaris may not be the fastest pystone box for MHz/$ you may find you can do far more with it if you run a bunch of Zeo servers ;-) If you are running lot's of Zope servers then you need to look at what your horizontal scalability will be. (ie how does it handle a load from multiple processes.) This test obviously doesn't stress memory. See ya Tim On Wed, 2002-12-11 at 22:55, Roel Van den Bergh wrote: > Here are some stats to add :-) > > Dell PowerApp 120 Intel Pentium III (Coppermine) Dual 1Ghz, 1GB PC133 ECC > SDRAM > running in single proccessor mode > > [root@root]# python /home/zope/2-5-0/lib/python2.1/test/pystone.py > Pystone(1.1) time for 10000 passes = 0.87 > This machine benchmarks at 11494.3 pystones/second > [root@root]# python /home/Python-2.1.3/Lib/test/pystone.py > Pystone(1.1) time for 10000 passes = 0.86 > This machine benchmarks at 11627.9 pystones/second > [root@root]# python /usr/lib/python1.5/test/pystone.py > Pystone(1.1) time for 10000 passes = 0.85 > This machine benchmarks at 11764.7 pystones/second > [root@root]# python /usr/lib/python2.1/test/pystone.py > Pystone(1.1) time for 10000 passes = 0.86 > This machine benchmarks at 11627.9 pystones/second > [root@root]# python /usr/local/lib/python2.1/test/pystone.py > Pystone(1.1) time for 10000 passes = 0.87 > This machine benchmarks at 11494.3 pystones/second > [root@root]# python /usr/src/redhat/BUILD/Python-2.1.3/Lib/test/pystone.py > Pystone(1.1) time for 10000 passes = 0.85 > This machine benchmarks at 11764.7 pystones/second > > Roel. > > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://lists.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) DISCLAIMER: This email, including any attachments, is intended only for use by the addressee(s) and may contain confidential and/or personal information and may also be the subject of legal privilege. Any personal information contained in this email is not to be used or disclosed for any purpose other than the purpose for which you have received it. If you are not the intended recipient, you must not disclose or use the information contained in it. In this case, please let me know by return email, delete the message permanently from your system and destroy any copies. Emails and their attachments may be interfered with, may contain computer viruses or other defects and may not be successfully replicated on other systems. All attachments are opened at the recipient's risk.

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zope book volunteering
by Chris McDonough 12 Dec '02

12 Dec '02

I am incredibly happy to report that many folks are "signing up" to edits chapters of the Zope Book in preparation for the upcoming Zope 2.6.1 release! It's really beating the cynicism out of me! ;-) As a matter of fact, so many people are signing up that I'm getting *multiple* submissions of the same chapters! While this is a wonderful problem to have, I don't want folks to waste effort doing something that somebody else has already committed to. I have put up a page documenting signups and current status for the editing effort at http://www.zope.org/DocProjects/zope_book_signups/index_html . Hopefully this will serve as a place that I can keep track of who is doing what. Here are the chapters in the 2.6 edition of the Zope Book ( http://www.zope.org/Documentation/Books/ZopeBook/2_6Edition/index_html ) that are not yet "spoken for": Maintaining Zope Extending Zope (ZClasses) Advanced DTML Searching and Categorizing Content If anyone aspires to edit some Zope docs and get some fame and glory, the time is now. ;-) - C

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increment value of self
by Davis Marques 11 Dec '02

11 Dec '02

I'm having a lot of problems with this one . I have an object (A) that has a method called increment, and a variable in the Basic propertysheet called count. I'd like other objects to be able to call that method, so that the A object increments the value of count + 1 when requested. The problem I'm having is that any other variables present in REQUEST are then also assigned to A. Here's what I have so far: """ increment """ c = context.count + 1 context.REQUEST.set('count',c) context.propertysheets.Basic.manage_editProperties(context.REQUEST)

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VirtualHostMonster
by Tom Nixon 11 Dec '02

11 Dec '02

I've got a Zope site running at http://www.mydomain.com:8080/ I'm trying to use url rewriting and a virtual host monster to make the port number transparent so the site appears to run from http://www.mydomain.com What do I need to add in the mappings tab of the VHM to make this work, and how should I set up the url rewriter? T.

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MySQL Transaction/Locking/etc
by Terry Hancock 11 Dec '02

11 Dec '02

Hi All, Twice now I've come into what must be a fairly common problem when using SQL databases in Zope: I simply want MySQL to give me a unique identifier and I need to retrieve what its value is to continue using the correct record. The MySQL side of this is very straightforward -- I just make an AUTO_INCREMENT field and use LAST_INSERT_ID() to get what its value was. I'm less sure how safe this is in Zope -- the whole point being, of course, that when running multi-threaded, another thread *could* stick another record into the table, so that LAST_INSERT_ID() comes up with the wrong value. As a perhaps naive attempt to handle this in a previous application (for which the consequences of an error were not too severe), I simply used the threading module and acquired a lock -- I'm hoping that this will keep at least any threads within my current Zope process from interfering. (Please forgive my ignorance of threads if this betrays a deep misunderstanding! Corrections will be much appreciated. ;-)). I can however, picture installations with more than one Zope *process* running, but accessing the same database, which would presumeably allow collisions under high loads. :-( I tried using MySQL's table-locking mechanism to do this, but the lock would cause *all* my queries to fail -- including the ones that I was supposed to be protecting. Since each ZSQL method can only do one query, I couldn't figure out how to run a batch of them. MySQL can do transactional tables nowadays, but I'm not sure if they would actually make sense for this application -- this "get a unique new record id" function is the only thing I really need to do this way. And I'm not even sure that transactions would be proof against this (would transactions stop the LAST_INSERT_ID() being incremented in the middle of the transaction? It doesn't seem like it would actually violate the transaction model to do that). There doesn't seem to be much on the Zope website or in the ZDG about how to deal with this situation (or perhaps I don't know what to search for). Has anyone else solved it? Is the thread-locking solution adequate, or is there a better way? Any suggestions? Thanks, Terry -- Terry Hancock ( hancock at anansispaceworks.com ) Anansi Spaceworks http://www.anansispaceworks.com "Some things are too important to be taken seriously"

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Re: [Zope] Session length
by Dennis Allison 11 Dec '02

11 Dec '02

> > Is there anyway to use the Session Data Manager or a related component to > measure the length of a session? What I actually would like is an event that > fires the moment a session expires and one that fires the moment a session > is initiated (well, the last thing you could do by inserting something in > the session and checking whether it already was there). > The session_data object (in the temp folder) has hooks for session start and stop. These hooks are also available through the API. Read the Zope Book (2nd edition -- on-line) about sessions for more info.

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