RE: [Zope] Custom 404 - Resource not found
... Changing standard_error_message does not seem change this error page. Maybe, you made a mistake? Yes, I made a mistake! In standard_error_message: dtml-if error_message dtml-var error_message dtml-else h2My TEST Site Error/h2 ... 404 errors hit the dtml-if and other errors, like attribute errors, go to the dtml-else. I was just modifying the else. Thanks! ___ Zope maillist - Zope@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 )
[Zope] Custom 404 - Resource not found
Is there a way to customize the Zope 404 error page? Site Error An error was encountered while publishing this resource. Resource not found Changing standard_error_message does not seem change this error page. I need to do this inside Zope or via the apache front end which talks to Zope through mod_rewrite/proxy and Virtual Host Monster. Thanks! Andy ___ Zope maillist - Zope@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 )
RE: No memory leak! (was: Re: [Zope] Memory Leak in Session Data Container)
Leak, bug, improper configuration, what ever. ;-) With the onDelete in place for 1 week now I checked the temporary Cache Parameters as you requested. Since I put the onDelete on this server memory use has still grown, but at a much slower rate. I think it will go about 10 days like this instead of 1 before using up all system memory. For whatever reason we have 7 caches on this server. I do not see where this is configured. /Control_Panel/Database/temporary/manage_cacheParameters Total number of objects in the database 363761 Total number of objects in memory from all caches34952 Target number of objects in memory per cache5000 I flushed the cache and about 1 hour after flushing, memory use has not gone down at all. During that hour objects in all caches went from 0 to 15341. Objects in the transient object container are still holding steady at 2000-3000. Before the onDelete they grew without bound. /Control_Panel/Database/temporary/manage_cacheParameters Total number of objects in the database369885 Total number of objects in memory from all caches15341 Target number of objects in memory per cache5000 It seems odd to me that the total objects in the db are growing so large. If I understand you correctly a workaround would be to change the number of objects per cache from 5000 to something more reasonable. Where is this configured and what is reasonable? 5, 50, 500. I do not see an item for this in the config file. Should there be any cache at all on an in-memory temp db? Andy Yates -Original Message- From: Dieter Maurer [mailto:[EMAIL PROTECTED] Sent: Friday, April 14, 2006 7:54 AM To: Andy Yates; zope@zope.org Subject: No memory leak! (was: Re: [Zope] Memory Leak in Session Data Container) Dieter Maurer wrote at 2006-4-11 22:14 +0200: Andy Yates wrote at 2006-4-10 12:43 -0500: ... Fortunately, I have an easy way to reproduce the problem and even better I've found a work around. My hope is that the work around will lead somebody more familiar with the innards of Zope to where the problem is located. Congratulations! I will look into this within the next days (in Zope 2.8.1, however). I checked this: There is no memory leak related to session handling in Zope 2.8.1! ... The ZODB cache may keep your session objects (and thereby its content) alive. Almost surely, this is what happened in Andy's test. Here is a description how I checked for the existence of a memory leak: I instrumented the pickles in tempstorage.TemporaryStorage.TemporaryStorage such that I can find out the number of pickles stored (similar to the reference counts in Control_Panel/DebugInfo). I performed a mass test, creating thousands of sessions (similar to Andy's test). The pickle number stored by TemporaryStorage grew as expected (as it stores the sessions). I forced all session objects maintained by /temp_folder/session_data to be discarded. Creating a single new session caused almost all TemporaryStorage pickles to be released. However, the ZODB caches still contained about 20.000 session objects. It was very surprising (and contrary to my previous message) that the storage flushed most of its pickles while references to them were still in the ZODB caches. This looks like a bug (but not a memory leak). I flushed the ZODB caches. I repeated the test and verified that the number of pickles remaining in TemporaryStorage does not increase. Results: * no memory leak! * maybe something that looks like a memory leak caused by the ZODB caches which may hold up to 20.000 (with standard configuration) no longer used objects A more senseful configuration can work around this. -- Dieter ___ Zope maillist - Zope@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 )
[Zope] Memory Leak in Session Data Container
Good day everyone! I hope your weekend was as good as mine. I didn't have to work and I got to watch my son's first soccer (football) game! For the past couple of years (I think) the Session Data Container has been leaking memory. During this time several leaks have been patch but at least for our servers these fixes have only slowed down the process. As our use of Zope grows and traffic to our site increases so does the memory usage of Zope. Unless Zope is restarted it will eventually use all physical memory and swap space and crash the server. Over the past month the problem has once again grown to the point where we must restarted Zope daily, sometimes even every 8 hours. I don't know why this problem does not seem more wide spread. My guess is because our site has a large load and we make extensive use of session variables. Fortunately, I have an easy way to reproduce the problem and even better I've found a work around. My hope is that the work around will lead somebody more familiar with the innards of Zope to where the problem is located. TEST CASE To reproduce the problem I used the following: VA Linux Server w/ 1Gig Fedora Core 3 Zope 2.7.8-final, python 2.3.4, linux2 Python 2.3.4 (#1, Feb 2 2005, 12:11:53) [GCC 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)] top and/or snmp to watch memory usage Step 1: In Zope I created the following script: session = context.REQUEST.SESSION s= 'Andy' * 102400; session['sessiontest1']=s The size of 's' depends purely on how fast you would like Zope to eat memory. On my server this will consume all physical memory in about 1000 calls. Step 2: Changed the session_data object timeout to 1 minute. This is just to cause the session objects to expire in 1 minute to hurry the test along. Changed the Max subobjects to 0 (unlimited). I don't know if this is needed, but it is how we have our production servers set. Step 3: Use ab (apache bench) to call the script 1000 times using 10 concurrent threads. This causes Zope to consume over 90% of the memory as one would expect. The transient object container (/temp_folder/session_data) will now show 1009 objects. I don't know where the 6-9 extra come from.? Step 4: Wait 1-2 minutes for the objects to expire. Note: Use a browser or ab to access some other resource in Zope and or the script a number of times. This is needed to tickle the transient object container's expiration/garbage collection system. (You've got to keep those buckets moving) As expected the transient object container now shows 0 objects. However, Zope never releases the memory. You can wait minutes, hours, days what ever all the while tickling Zope. Zope will NEVER release the memory until it is restarted. Oh, and new requests just use more memory. Zope is NOT just hanging on to it for future use. THE WORK ARROUND I created a script called onDelete Parameter List sdo, toc sdo.clear() Then in /temp_folder/session_data I set the Script to call when objects are deleted to /onDelete Now when the tests are run the same amount of memory is consumed, but it is released back to the system when the session objects expire. CONCLUSION To me it looks like data placed in the session object are not getting deleted when the session object expires. Anything placed in a session object is essentially leaked. When the onDelete script explicitly removes the contents of the session data object the memory leak stops. Comment? Questions? Fixes? ;-) Thanks! Andy Yates ___ Zope maillist - Zope@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 )
RE: [Zope] zope vs. memory [was Re: Refcounts, ZODB Cache and memory leaks?]
Some moths ago, I found such a leak in the TempStorage implementation. However, this is fixed in recent Zope versions (I think since 2.7.5). When you fixed the TempStorage the leak indeed slowed down significantly. However, Zope still leaks memory. If left uncheck Zope will still consume all available memory and crash the server. We have resigned ourselves to restarting Zope every few weeks. Andy ___ Zope maillist - Zope@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 )
RE: [Zope] Dynamic Zope Style Sheets with HTML 4.01 Strict
I do exactly the same thing, except that I do it directly in the ZPT :
span tal:omit-tag= tal:define=setcontentype
python:here.REQUEST.RESPONSE.setHeader('content-type', 'text/css')/
Pascal
AH, an elegant solution! Thanks!!
-Message d'origine-
De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] la part de
Andy Yates
Envoyé : jeudi 31 mars 2005 21:53
À : zope@zope.org
Objet : RE: [Zope] Dynamic Zope Style Sheets with HTML 4.01 Strict
Thanks! I've never used dtml for style sheets. I've always used page
templates and never had a problem 'til now. Also, I don't see a way to
set the content type on a dtml doc or method. I assume it would be
text/html and then I back in the same boat. To restate my problem,
FireFox in HTML 4.01 Strict mode does not seem to accept a style sheet
if the content type is text/html. It needs to see text/css. (Of course
IE is fat dumb and happy) Everything worked fine until I added this doc
string to my page:
!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01//EN
http://www.w3.org/TR/html4/strict.dtd;
Unless somebody has some better magic this seems work.
context.REQUEST.RESPONSE.setHeader('content-type', 'text/css')
return context.stylesheet()
This way I can leave the content type on the page template text/html so
Zope is happy and make FireFox happy by overriding the content type to
text/css.
Andy
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Paul Winkler
Sent: Thursday, March 31, 2005 12:00 PM
To: zope@zope.org
Subject: Re: [Zope] Dynamic Zope Style Sheets with HTML 4.01 Strict
On Thu, Mar 31, 2005 at 11:38:59AM -0600, Andy Yates wrote:
Am I going to have to write a python script to call the style sheet
page
template and change the content type or is there a better way to
handle
this?
Page Templates are awkward to use for non-XML output. I never tried
to use them for stylesheets.
fwiw, I have good results using DTML Methods for my dynamic
stylesheets.
It's about the only thing I use DTML for anymore.
Mine look roughly like this:
dtml-with SomethingThatGivesMeABunchOfProperties
body {
background-color: dtml-mainBackgroundColor;;
color: dtml-mainTextColor;;
}
/* more style rules follow */
...
/dtml-with
--
Paul Winkler
http://www.slinkp.com
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[Zope] Dynamic Zope Style Sheets with HTML 4.01 Strict
Good day everyone! I added a doc type string to one of my Zope pages because it needed to pass an HTML 4.01 Strict validator. When I did this FireFox seems to ignore the style sheet. My style sheet is dynamic so I used a page template and tal. If the Content Type on the style sheet is set to text/html FireFox will not load the style sheet. If I set the Content Type to text/css I get an error when I save the page. Compilation failed xml.parsers.expat.ExpatError: syntax error: line 3, column 0 If I make my style sheet with a file and content type of text/cc instead of a page template FireFox loads the style sheet but the tal statements do not get rendered. So, how do I make a dynamic style sheet that has the correct (text/css) content type? Am I going to have to write a python script to call the style sheet page template and change the content type or is there a better way to handle this? Thanks! Andy ___ Zope maillist - Zope@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 )
RE: [Zope] Dynamic Zope Style Sheets with HTML 4.01 Strict
Thanks! I've never used dtml for style sheets. I've always used page
templates and never had a problem 'til now. Also, I don't see a way to
set the content type on a dtml doc or method. I assume it would be
text/html and then I back in the same boat. To restate my problem,
FireFox in HTML 4.01 Strict mode does not seem to accept a style sheet
if the content type is text/html. It needs to see text/css. (Of course
IE is fat dumb and happy) Everything worked fine until I added this doc
string to my page:
!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01//EN
http://www.w3.org/TR/html4/strict.dtd;
Unless somebody has some better magic this seems work.
context.REQUEST.RESPONSE.setHeader('content-type', 'text/css')
return context.stylesheet()
This way I can leave the content type on the page template text/html so
Zope is happy and make FireFox happy by overriding the content type to
text/css.
Andy
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Paul Winkler
Sent: Thursday, March 31, 2005 12:00 PM
To: zope@zope.org
Subject: Re: [Zope] Dynamic Zope Style Sheets with HTML 4.01 Strict
On Thu, Mar 31, 2005 at 11:38:59AM -0600, Andy Yates wrote:
Am I going to have to write a python script to call the style sheet
page
template and change the content type or is there a better way to
handle
this?
Page Templates are awkward to use for non-XML output. I never tried
to use them for stylesheets.
fwiw, I have good results using DTML Methods for my dynamic
stylesheets.
It's about the only thing I use DTML for anymore.
Mine look roughly like this:
dtml-with SomethingThatGivesMeABunchOfProperties
body {
background-color: dtml-mainBackgroundColor;;
color: dtml-mainTextColor;;
}
/* more style rules follow */
...
/dtml-with
--
Paul Winkler
http://www.slinkp.com
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** No cross posts or HTML encoding! **
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