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MemoryError: out of memory
by Jonathan Salazar Santos 27 Jan '11

27 Jan '11

Hi Comunity, I have been in troubles with Zope2.10.5-final since 4 moths ago, related to the "MemoryError: out of memory" (in the event.log), every three or fourth days (more or less) the Zope starts to say in our web: value error: Memory, and stops to serve some pages (not all), usually the pages that serve file contents (to download, convert to pdf or view online). I solve the problem (when appears) by rebooting the zope server, but its not a solutions, because I dont know when the error its coming ¿Can you help me to giving me some light to solve the problem? I have 2gb of RAM, and the server (FreeBSD) it says no-overloaded, just have 2 services, web(zope) and database(mysql). I think its something related to the cache memory or kind of (I changed some values in config file but not success). See some of my event.log Traceback (innermost last): Module ZPublisher.Publish, line 119, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 42, in call_object Module OFS.DTMLMethod, line 144, in __call__ - <DTMLMethod at /xxxx/index_html used for /xxxx/suscribete/adminNewsletter> - URL: http://xxxx/index_html/manage_main - Physical Path: /xxxx/index_html Module DocumentTemplate.DT_String, line 476, in __call__ Module OFS.DTMLMethod, line 137, in __call__ - <DTMLMethod at /xxxx/suscribete/adminNewsletter/third_header> - URL: http://xxxx/suscribete/adminNewsletter/third_header/manage_main - Physical Path: /xxxx/suscribete/adminNewsletter/third_header Module DocumentTemplate.DT_String, line 476, in __call__ Module DocumentTemplate.DT_In, line 703, in renderwob Module Products.MailHost.SendMailTag, line 114, in render Module Products.MIMETools.MIMETag, line 198, in render Module MimeWriter, line 177, in lastpart MemoryError: out of memory -- Lic. Jonathan Salazar Saludos,

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Preferred non-Products Initialization Approach?
by Jeff Rush 27 Jan '11

27 Jan '11

In my reading I can see there are two ways to initialize a Product that is not sitting in the Products directory: 1. use ZCML with the five:registerPackage directive 2. declare in setup.py a "zope2.products" entrypoint Which is the preferred way these days? Is there a subtle difference? In particular I'm having trouble with an Extensions/ subdirectory of the Product -not- being found in an import stmt when I moved it outside the Products directory. -Jeff

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Monkey patch for BLOB support in OFS.Image Images and Files
by William Heymann 10 Jan '11

10 Jan '11

I have a monkey patch here that I would like comments on it and to see how it works for others. https://github.com/Immudzen/MonkeyOFSImageFile I have been testing it for a few weeks now and I have not run into any problems with it. It works on Zope 2.13 and it should work on Zope 2.12 also without any issues. All that is needed it is to put this in your Products dir and make sure you have BLOB support setup correctly. Once that is done all uses of the Image and File objects inside zope will save as BLOBs instead and existing objects can be converted to BLOB objects with a script I have in the README file. What I have found so far is that with this zope has a lower memory usage and also runs faster. So far in my testing it is about 33% lower memory usage and I am interested in how others find it. You can also find me in #zope as kosh if you have questions about it.

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Trouble getting Zope 2.8/Python 2.3 to work in OS X 10.6
by Dan Gaibel 07 Jan '11

07 Jan '11

I apologize if this questions belongs in a different forum, but... I am having a heck of a time getting Python 2.3.5 installed in OS X 10.6 (Snow Leopard server.) I need it for a Zope 2.8.6 installation. OS X comes with Python 2.6.1 and I guess my plan is to have 2.3 installed alongside it. Neither MacPorts (a framework for installing ports of various programs to os x) nor Fink (essentially a port of apt-get / dpkg for os x) worked. MacPorts didn't have a port of python2.3 and Fink wouldn't compile. What I did to get it to the point where it is now: configure with: ./configure --enable-framework MACOSX_DEPLOYMENT_TARGET=10.5 --with- universal-archs=all --enable-toolbox-glue=false then run: export LC_CTYPE=en_US.UTF-8 next edit the resulting Makefile and remove the -Wno-long-double flag (it only appears once) finally, running 'sudo make' yields the error: libtool -o Python.framework/Versions/2.3/Python -dynamic -prebind - seg1addr 0x10000000 libpython2.3.a \ -framework System -lcc_dynamic -arch_only ppc - install_name /Library/Frameworks/Python.framework/Versions/2.3/Python - compatibility_version 2.3 -current_version 2.3 libtool: can't locate file for: -lcc_dynamic libtool: file: -lcc_dynamic is not an object file (not allowed in a library) make: *** [Python.framework/Versions/2.3/Python] Error 1 I haven't been able to figure out that last error; commenting out the line it stems from breaks things, deleting just that particular flag (lcc_dynamic) breaks things, and googling didn't turn up any answers. If this is an inappropriate questions for this list, I apologize... where should I post? Thanks! Dan

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Forum
by Richard Harley 06 Jan '11

06 Jan '11

Hello all Are there any current forums which integrate into Zope nicely? I have tried Zforum and Squishdot in the past but I don't think either of these two have been updated in quite a while? Thanks Rich

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Peewee and Zope
by Peter Bengtsson 30 Dec '10

30 Dec '10

I'm interested in marrying my Zope app with Peewee[1]. It's a very simple ORM based on Django's "ORM patterns". All I need is a non-persistent connection object in my app. To avoid reinventing any wheels, I thought I could maybe look at the SQLAlchemy or ZPsycopgDA packages for inspiration. Even better way to avoid re-inventing the wheel would be if there already was a package or some code I could try. Has anybody built anything like this they're willing to share? (nothing found by googling) [1] https://github.com/coleifer/peewee -- Peter Bengtsson, work www.fry-it.com home www.peterbe.com hobby donecal.com

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Zeo scaling question
by Small, James 21 Dec '10

21 Dec '10

Hello, I am working on a solution that has a very high number of users and a significant amount of traffic. Using a zeo configuration we have been running into a few bottle necks while trying to improve our load testing results. The problem we see is if that put our Zeo Configuration under load that Zope does not close the connections and the application server ends up running out of connections for Apache to connect to. The connections once opened idle indefinitely. (Apache is running on a dedicated server different from our Zeo instances). We are using RR between 2 vm instances using 10 zeo clients per vm to distribute load. The bottleneck is occurring on the Apache server because it's keeping TCP connections in time_wait status. We have completed load tests on both Windows 2003 and 2008. In 2003 we were able to adjust the registry so the OS would terminate connections after 15 seconds of idle, however in 2008 the minimum is 30 seconds. In the upper levels of testing the OS runs out of TCP connections because it can't close them fast enough and it begins to fail requests. Ideally we don't want to close connections forcibly via the tcp stack because Zope keeps them open. We'd hope that Zope would manage this clean up gracefully. One option we are considering is using IIS7.5 and ARR as a replacement load balancing/rewrite method. This could allow us to check health of destinations prior to forwarding a request. It may also give us more control over closing connections at the OS level. One other detail we think might be the issue is that Zope is not initiating the close connection event. Does anyone have any experience or knowledge they can lend to help out? Configuration: Windows 2003/2008 server Apache 2.1 Zope 2.12 MS SQL 2005 Python 2.6.6 SQLAlchemy 0.6.5 sqlalchemy version is 0.6.5 and z3c.sqlalchemy=1.4.0 zope.sqlalchemy=0.6 Jimmy Small (mallaice) This electronic message is intended only for the use of the addressee(s) named above and may contain legally privileged and/or confidential information. If you are not the intended recipient of this message, you are notified that any dissemination, distribution or copying of this message is strictly prohibited. If you received this message in error, please immediately notify the sender by telephone and delete the original message.

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Anonymous security
by Brian Sullivan 19 Dec '10

19 Dec '10

I am looking at a situation (an online self registry process) where I want to allow a user that is not logged in to be able to create a user and do a number of other functions normally reserved for and restricted to logged in users with a fairly elevated rights. I need to perform these functions from a Python script. What is the best strategy for doing this? I am thinking that creating a separate python script that has elevated rights and allowing Anonymous access to it and calling it from a script that does not have elevated rights is the best strategy to manage it. Am I creating a huge security hole by doing this?

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Openflow_ZPygresqlDA_products_broken_on_ZMI
by Smita Kamdar 16 Dec '10

16 Dec '10

Hi, I am sorry to start new threads for just a single issue. Now I will stick to only this thread (with subject: Openflow_ZPygresqlDA_products_broken_on_ZMI) for my issue. Thanks all for your suggestions. I have already started installing new products (of the same version as on live) from scratch (as suggested by lennart) on development env. I have already finished installing Zope-2.6.2, python-2.1.3, Openflow-engine-1.1.0, postgresql-7.4.13. Now I am in the process of installing ZPygresqlDA-0.0.3 & for its installation I followed the below steps - 1) I downloaded & untared ZPygresqlDA-0.0.3 in zope's Products dir i.e. (lib/python/Products) 2) I added the below line to Setup file in ZPygresqlDA/src directory - ----------------------------------------------------------------------------------------------------------------------------------------------------- *shared* _pg pgmodule.c -I/home/test/Python/2.1.3/lib/python2.1 -I/usr/local/pgsql/include -I/usr/local/pgsql/include/server -L/usr/local/pgsql/lib -lpq -lcrypt ------------------------------------------------------------------------------------------------------------------------------------------------------ Where python is installed at /home/test/Python/2.1.3 Postgresql is installed at /usr/local/pgsql Zope is installed at /opt/zope 3) I copied pg.py to /home/test/Python/2.1.3/lib/python2.1 4) make -f Makefile.pre.in boot 5) make & make install Upto 4th step it worked fine. But in the 5th step (i.e. make & make install) it shows the below error - ------------------------------------------------------------------------------------------------------------------------------------------------------------------- gcc -fPIC -g -O2 -Wall -Wstrict-prototypes -I/home/test/Python/2.1.3/include/python2.1 -I/home/test/Python/2.1.3/include/python2.1 -DHAVE_CONFIG_H -I/home/test/Python/2.1.3/lib/python2.1 -I/usr/local/pgsql/include -I/usr/local/pgsql/include/server -c ././pgmodule.c -o ./pgmodule.o ././pgmodule.c: In function âpgconnectâ: ././pgmodule.c:694: warning: passing argument 4 of âPyArg_ParseTupleAndKeywordsâ from incompatible pointer type /home/test/Python/2.1.3/include/python2.1/modsupport.h:14: note: expected âchar **â but argument is of type âconst char **â ././pgmodule.c:2128:5: warning: missing terminating " character ././pgmodule.c: In function âpgsetdefpasswdâ: ././pgmodule.c:2128: error: missing terminating " character ././pgmodule.c:2129: error: âNoneâ undeclared (first use in this function) ././pgmodule.c:2129: error: (Each undeclared identifier is reported only once ././pgmodule.c:2129: error: for each function it appears in.) ././pgmodule.c:2129:7: warning: missing terminating " character ././pgmodule.c:2129: error: missing terminating " character ././pgmodule.c:2130: error: expected identifier before âreturnâ make: *** [pgmodule.o] Error 1 ------------------------------------------------------------------------------------------------------------------------------------------------------------------ I am not able to solve this. Am I missing any step?? Please help. Thanks & Regards, Smita Kamdar ============================================================================================================================Disclaimer: This message and the information contained herein is proprietary and confidential and subject to the Tech Mahindra policy statement, you may review the policy at <a href="http://www.techmahindra.com/Disclaimer.html">http://www.techmahindra.com/Disclaimer.html</a> externally and <a href="http://tim.techmahindra.com/Disclaimer.html">http://tim.techmahindra.com/Disclaimer.html</a> internally within Tech Mahindra.============================================================================================================================

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Openflow_ZPygresqlDA_products_broken_on_ZMI
by Smita Kamdar 15 Dec '10

15 Dec '10

Hi, As suggested by you I have downloaded all the zope products of the same version as they are on live to remove the mismatch of versions. But before I install those products on dev environment, I will have to uninstall all the products that I had installed earlier (i.e. on dev env). Earlier, I had installed all the products from the source tar balls. So can u please suggest how do I uninstall these products on dev env? Thanks & Regards, Smita Kamdar | NGN-SOLNS | TechMahindra Oberoi Estate Gardens, Chandivali, Andheri(E) Mumbai-72 Office: +91 22 66882000 | Extn: 6185 Email: smita.kamdar(a)techmahindra.com "A professional is someone who can do his best work when he doesn't feel like it." Go green: Don't hit PRINT ============================================================================================================================Disclaimer: This message and the information contained herein is proprietary and confidential and subject to the Tech Mahindra policy statement, you may review the policy at <a href="http://www.techmahindra.com/Disclaimer.html">http://www.techmahindra.com/Disclaimer.html</a> externally and <a href="http://tim.techmahindra.com/Disclaimer.html">http://tim.techmahindra.com/Disclaimer.html</a> internally within Tech Mahindra.============================================================================================================================

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