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Sessions and RAM cache managers causing memory leak
by Richard Ettema 19 May '04

19 May '04

Hi, I have a website using CMF that uses sessions and a couple of RAM Cache Managers. There seems to be some problem between them and the data I am storing that is causing a huge memory leak (At times 300-400M of memory is chewed up in 10 minutes). My problem is how to track the problem down. I thought it would be simple process of running httperf and including/excluding things until I narrow it down. It hasn't been as simple as that, actually it has become very confusing... Zope Version: 2.6 Python: 2.1.3 CMF: 1.4.2 The session objects hold general data for the current user including; strings, lists, dictionaries and a datetime object. There are 2 RAM Cache Managers, one which caches for 15 mins and one for 24 hours. Both cache 20-30 DTML Methods or Python Scripts that return either lists, datetime objects, dictioneries, or rendered dtml. Some of the dtml calls the catalog multiple times, I can't see why, but would this be a problem? (I also tried changing everything to strings to see if it was a problem with caching objects like datetime and dictionaries, but no change) I created a test dtml method that creates a simple session (with a single string stored), and also calls all the methods/scripts that are cached. I then went about adding/removing these and running httperf to narrow down the problem. This is what happened calling the test method by httperf for approx 15 mins after restarting zope after each test (initial memory usage was 22M before running httperf)... Calling all methods/scripts being cached (no sessions created): 86M used at end of test. Calling the sessions only, creating a session for each call (no caching): 60M used at end of test. Calling cached methods/scripts and session creation together (this is everything): 471M used at end of test (usually more). Calling 15min cache objects and session creation (exclude 24hour cache objects): 192M used at end of test. Calling 24hour cache objects and session creation (exclude 15min cache objects): 159M used at end of test. I don't understand whats going on here. there seems no problem between the 2 RAM caches when you run them together. No problem with the session machinery when you create sessions by itself. but put everything together and it all goes very wrong! I would have thought if the caching on its own ends up at 86M and the sessions on their own end at 60M, then together i should expect around 140-150M. Any ideas of where I should be looking, something I am overlooking, or any known problems with cmf,caching,sessions that I should be aware of? Thanks for your help on this, as I have no idea where to go next. Richard.

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RE: NEVERMIND - Basic Python Question
by Laura McCord 19 May '04

19 May '04

Nevermind I finally found an example that helped me out. -----Original Message----- From: Laura McCord Sent: Wednesday, May 19, 2004 8:19 AM To: 'zope(a)zope.org' Subject: Basic Python Question I am writing a .htaccess file like below: basedir = "12345678" username = "joe" dirpwd = "./htpasswd" dirpath = "/var/www/html/test/" + basedir + "/.htpasswd" filename=open(dirpath, 'w') filename.write("AuthType Basic") filename.write("AuthName Password Required") filename.write("AuthUserFile" + dirpwd) filename.write("Require user " + username) My question is how do I make each of my statements on a separate line. Once the file is created it should look like this when the .htaccess is opened: AuthType Basic AuthName "Password Required" AuthUserFile /var/www/html/test/12345678/.htpasswd Require user joe Plus, filename.write("AuthName Password Required") how do I make Password Required have quotes around it when written to the file? Thanks, Laura

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Forcing a transaction to commit
by Kevin Carlson 19 May '04

19 May '04

Hi all, Is there a way using a python script to force a transaction to commit? For example, I would like to start a script by clicking a button on a page and then close my browser. The problem is that when the transaction can't complete due to the closed connection, everything gets rolled back. I would like for the script to run and then commit, regardless. Any ideas? Thanks, Kevin

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lilpond-zope
by Aaron 19 May '04

19 May '04

Hi all, I am trying to set up a zope based web application which manages musical content, specifically lilypond notation, ogg-vorbis audio, midi, and information about these files (songs) I need a way to give users of the project a way to add, correct, edit etc. lilypond files. Lilypond is a text based ascii format for musical notation, so theoritcally a text box would be good enough. essentially I would like to give them two possibilities: 1. the ability to edit on the web page itself either: a.) with colorization, completion etc of common lilypond funtions. this is already available with vim and emacs, but I would like to add some of that functunality to a zope textbox. b.) A more graphical front end to lilypond where the user see's graphics of the various elements and clicks on them with the mouse (or uses a shortcut key) to add the elements to the page. 2. the ability to edit lilypond files remotely and upon save upload them to the zope server. In the above cases midi playback of the resulting files would take place by sending the file to the lilypond parser and playing the result in a midi player. How do I go about creating from scratch such an editing enviroment or modifying and existing one? Thanks Aaron

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RE: Zope Digest, Vol 10, Issue 28
by Marinussen, M.J. (Ria) 19 May '04

19 May '04

Hi Jan, Look at the source of your redirect page, and you'll see the urls for css and image files not having the 8080/hc addition. You should add an '/' to the redirect path. Without the trailing '/' only the "http://www.hepnetcanada.ca" url gets redirected, not the "http://www.hepnetcanada.ca/whatever" url's. so the correct redirection settings would be: <VirtualHost 142.104.61.63> ServerName www.hepnetcanada.ca Redirect / http://www.hepnetcanada.ca:8080/hc/ </VirtualHost> I'm not sure why it does work for other browsers than IE though, because this is a serverside redirect. Greetings, Ria Marinussen > Message: 20 > Date: Tue, 18 May 2004 16:41:42 -0700 > From: Jan Van Uytven <wyvern(a)uvic.ca> > Subject: [Zope] apache redirect to zope problem > To: zope(a)zope.org > Message-ID: <1084923702.5737.4.camel@localhost> > Content-Type: text/plain > > Hi all, > > I've got apache set up on my server to redirect requests for > http://www.hepnetcanada.ca > to go to > http://www.hepnetcanada.ca:8080/hc > > and by and large, this works. At least it does with mozilla, opera, > etc... however when the request is redirected in internet explorer 6, > the page renders without CSS formatting. (try it) > > Any idea why this happens, or how I can fix it? The apache redirect is > very simple, i.e. > > <VirtualHost 142.104.61.63> > ServerName www.hepnetcanada.ca > Redirect / http://www.hepnetcanada.ca:8080/hc > </VirtualHost> > > Any help would be appreciated. > > Thanks, > > Jan > > > --- > Jan (Wyvern) Van Uytven > Sysadmin, UVic TRIUMF > wyvern(a)uvic.ca > > Randomly selected from my quote-file: > > "Whenever I watch TV and see those poor starving kids all over the > world, I can't help but cry. I mean I'd love to be skinny like that, > but not with all those flies and death and stuff." > - Mariah Carey > > > >

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Start Script
by Loomis, Todd, CTR, DMSO 19 May '04

19 May '04

All: I've got a service start script that I'm getting the following error when I try to start it: /sbin/service: /etc/init.d/zope: bad interpreter: No such file or directory It use to work but I just reinstalled Zope under a new directory and change it in the script to point it; here's the script: #!/bin/sh:q! # # zope Start/Stop the Zope web-application server. # # chkconfig: 2345 72 72 # description: zope is a web server specifically for handling \ # HTTP requests to the Zope web-application service. # probe: true # Source function library. #!/bin/sh:q! # # zope Start/Stop the Zope web-application server. # # chkconfig: 2345 72 72 # description: zope is a web server specifically for handling \ # HTTP requests to the Zope web-application service. # probe: true # Source function library. . /etc/init.d/functions RETVAL=0 start() { echo -n $"Starting up Zope: " /var/www/zopee/start >> /var/log/zope/messages 2>&1 & RETVAL=$? echo } stop() { echo -n $"Shutting down Zope: " /var/www/zopee/stop RETVAL=$? echo } restart() { stop start RETVAL=$? } # See how we were called. case "$1" in start) start ;; stop) stop ;; restart|reload) restart ;; *) echo "Usage: zope {start|stop|restart|reload}" exit 1 esac exit $RETVAL Any help would be greatful! ________________________________ Todd Loomis

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apache redirect to zope problem
by Jan Van Uytven 19 May '04

19 May '04

Hi all, I've got apache set up on my server to redirect requests for http://www.hepnetcanada.ca to go to http://www.hepnetcanada.ca:8080/hc and by and large, this works. At least it does with mozilla, opera, etc... however when the request is redirected in internet explorer 6, the page renders without CSS formatting. (try it) Any idea why this happens, or how I can fix it? The apache redirect is very simple, i.e. <VirtualHost 142.104.61.63> ServerName www.hepnetcanada.ca Redirect / http://www.hepnetcanada.ca:8080/hc </VirtualHost> Any help would be appreciated. Thanks, Jan --- Jan (Wyvern) Van Uytven Sysadmin, UVic TRIUMF wyvern(a)uvic.ca Randomly selected from my quote-file: "Whenever I watch TV and see those poor starving kids all over the world, I can't help but cry. I mean I'd love to be skinny like that, but not with all those flies and death and stuff." - Mariah Carey

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by Angeline Fink 19 May '04

19 May '04

legal Usual cost of Window XP is 270$ We brake the rules ! Just for 50$ it available now. http://sourcesbest.net/ Many others software products by unbeatable prices you can obtain at this time if you visit this site. Time limited. Don't think too much.

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Re: Zope and HTC behaviors
by Paul Winkler 19 May '04

19 May '04

On Wed, May 19, 2004 at 03:07:18PM +1000, Christian Blunden wrote: > Hey Paul, > > I was reading your post on the Zope mail list regarding the HTC files > and was wondering if you could help me out? i'll try... why not keep it on the mailing list? > > I have a similar problem trying to reference an htc behavior file from > the body ie... > > body { > > behavior:url(&dtml-portal_url;/csshover.htc); > > } > > > > I have tried creating this csshover.htc file as both DTML method and a > file upload. Setting the content type to text/x-component. If you're sure the content type is being set, I would double-check the URL in your css there. E.g. try leaving out the dtml-portal_url; and see what you get. I seem to recall having issues with url() values in CSS before. It does not always seem to behave as I expect. -- Paul Winkler http://www.slinkp.com

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RE: [Zope] apache redirect to zope problem
by Jason LeMonier 19 May '04

19 May '04

Hey Jan, I suspect based on this: <VirtualHost 142.104.61.63> ServerName www.hepnetcanada.ca Redirect / http://www.hepnetcanada.ca:8080/hc </VirtualHost> that you are not using a VirtualHostMonster, and the more complex rewrite rule. Look that up. Well documented (yet a bit tricky) Here's a piece of our intranet apache config: <VirtualHost *> RewriteEngine On Rewriterule ^/icons/(.*) "C:/Program Files/Apache Group/Apache2/icons/$1" [L] Rewriterule ^/rtidocs(.*) "d:/Centralized RTI Documentation$1" [L] Rewriterule ^/docs(.*) "d:/Centralized RTI Documentation$1" [L] Rewriterule ^/alldocs(.*) "d:/Centralized RTI Documentation$1" [L] RewriteRule ^/(.*) http://127.0.0.1:808/VirtualHostBase/http/insiderti.retailpro.com:80/Plone/… [P] </VirtualHost> please let me know if you have any questions! Jason LeMonier Software Engineer Retail Technologies International Office 916.605.7262 Mobile 415.595.0969 Fax 509.693.4243 jlemonier(a)RetailPro.com -----Original Message----- From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org]On Behalf Of Jan Van Uytven Sent: Tuesday, May 18, 2004 4:42 PM To: zope(a)zope.org Subject: [Zope] apache redirect to zope problem Hi all, I've got apache set up on my server to redirect requests for http://www.hepnetcanada.ca to go to http://www.hepnetcanada.ca:8080/hc and by and large, this works. At least it does with mozilla, opera, etc... however when the request is redirected in internet explorer 6, the page renders without CSS formatting. (try it) Any idea why this happens, or how I can fix it? The apache redirect is very simple, i.e. <VirtualHost 142.104.61.63> ServerName www.hepnetcanada.ca Redirect / http://www.hepnetcanada.ca:8080/hc </VirtualHost> Any help would be appreciated. Thanks, Jan --- Jan (Wyvern) Van Uytven Sysadmin, UVic TRIUMF wyvern(a)uvic.ca Randomly selected from my quote-file: "Whenever I watch TV and see those poor starving kids all over the world, I can't help but cry. I mean I'd love to be skinny like that, but not with all those flies and death and stuff." - Mariah Carey _______________________________________________ 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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