Re: [S2] Exploding memory usage with JBoss5
Just to give some more information (maybe someone with more in-depth knowledge finds the time to take a look at this issue): I have an EAR file with two EJB3 entity beans and a web client WAR. It can be found here: http://www.informatik.fh-wiesbaden.de/~knauf/KomponentenArchitekturen2008/kuchenzutatstruts/KuchenZutatStruts.ear On copying it to the deploy directory of JBoss, memory usage increases by 20 MB. On calling the first struts page (http://localhost:8080/KuchenZutatStrutsWeb/ - then click the link on the index page), memory usage increases by another 30 MB. This happens with every redeploy, at least during normal developing/testing cycles, which means one redeploy every few minutes. If I wait on longer period until the next redeploy, memory usage might decrease again. But after 5-10 redeploys without longer pauses between (which is normal when trying to find/fix bugs), the machine is constantly swapping, and the app is poorly slow. I suspect a JBoss 5 problem, but as I have only very basic struts knowledge, I don't know enough about the internals to file a struts or jboss JIRA. Thanks Wolfgang Knauf Wolfgang Knauf wrote: Hi all, I have a quite small Struts 2 application running on a JBoss 5.0GA. It contains some EJB3 entity beans, an EJB3 session bean, a handful of struts actions and three JSPs. After about 5 redeploys (I use JSR88), JBoss is consuming more and more memory (500MB) and thus getting poorly slow. The system is Windows XP64, JDK 1.6, deployment from Eclipse 3.4/WTP 3.0. All my other small apps don't show this behaviour, it happens only with struts 2. Has anybody seen this behavior, and has any ideas? Thanks Wolfgang - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
Re: [S2] Exploding memory usage with JBoss5
Just to give some more information (maybe someone with more in-depth knowledge finds the time to take a look at this issue): On copying it to the deploy directory of JBoss, memory usage increases by 20 MB. On calling the first struts page (http://localhost:8080/KuchenZutatStrutsWeb/ - then click the link on the index page), memory usage increases by another 30 MB. I have the same app in a JSF version (same ejb layer, but different web client), and there I did not have memory problems. So I would remove the ejb layer from the suspects list ;-). With a plain WAR file, memory usage increases by 20MB on deploy, but only by 5 on calling the first page. So the maximum is not reached as quick as with the EAR file. But the same tendency can be seen: memory increases on each redeploy, and sometimes goes down, but mostly it is growing. Wolfgang - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
[S2] Exploding memory usage with JBoss5
Hi all, I have a quite small Struts 2 application running on a JBoss 5.0GA. It contains some EJB3 entity beans, an EJB3 session bean, a handful of struts actions and three JSPs. After about 5 redeploys (I use JSR88), JBoss is consuming more and more memory (500MB) and thus getting poorly slow. The system is Windows XP64, JDK 1.6, deployment from Eclipse 3.4/WTP 3.0. All my other small apps don't show this behaviour, it happens only with struts 2. Has anybody seen this behavior, and has any ideas? Thanks Wolfgang - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
Re: [S2] Exploding memory usage with JBoss5
Anyone seen this in Tomcat? Wolfgang Knauf wrote: Hi all, I have a quite small Struts 2 application running on a JBoss 5.0GA. It contains some EJB3 entity beans, an EJB3 session bean, a handful of struts actions and three JSPs. After about 5 redeploys (I use JSR88), JBoss is consuming more and more memory (500MB) and thus getting poorly slow. The system is Windows XP64, JDK 1.6, deployment from Eclipse 3.4/WTP 3.0. All my other small apps don't show this behaviour, it happens only with struts 2. Has anybody seen this behavior, and has any ideas? Thanks Wolfgang - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org -- View this message in context: http://www.nabble.com/-S2--Exploding-memory-usage-with-JBoss5-tp21551351p21556224.html Sent from the Struts - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
Re: RequestProcessor processPopulate heavily increases memory usage
Hi, Thanks for your pointers. It turns out that on *all* forms the enctype=multipart/form-data was set even though no file upload was taking place. This caused the commons multipart request handler to allocate huge amounts of memory (256K for each field on the form) for each form which never get released. I 'fixed' it by setting memFileSize to a low value (2K) Apparently the enctype was added to all forms to circumvent problems when chaining Struts actions. Yes I know, I just started here one month ago and ugly skeletons keep falling out of the closet every day. Thanks for your time, Willem Michael Jouravlev [EMAIL PROTECTED] 21/02/2006 20:08 Por favor, responda a Struts Users Mailing List Para: Struts Users Mailing List user@struts.apache.org cc: Asunto: Re: RequestProcessor processPopulate heavily increases memory usage Session-scoped form can affect memory footprint on the first load and barely on update. He gets +30M on each load. I doubt that reasonably designed session-scoped form can be at fault here. It would sit there, but it would not grow that fast. There should be something else that he allocates. BTW, his log shows request-scoped form. Willem, try to create an empty action/form pair and test it. I suppose this is something that you create. Michael. On 2/21/06, Joe Germuska [EMAIL PROTECTED] wrote: Do you have a session scoped form with one or more FormFile properties? Consider switching the scope to request, or alternatively, using the controller element to reduce the size of the in-memory file representation before the data is written to disk (see the memFileSize attribute described at http://struts.apache.org/struts-action/userGuide/configuration.html#controller_config ) Joe At 6:12 PM +0100 2/21/06, [EMAIL PROTECTED] wrote: Hi, Last week we migrated our Struts 1.0 application to 1.2.8. As far as we can tell, we correctly followed the migration steps inbetween. Since the migration we have noticed the following weird behaviour: upon submitting a form from a jsp to as struts form/action, the method processPopulate of RequestProcessor will increase memory usage on our windows box by some 30M for each call. Unfortunately, this extra memory is not freed, not even after waiting more than say one hour. After a few such requests, needless to say, this produces OutOfMemoryErrors. I pinpointed the memory usage to this method by setting log4j.logger.org.apache.struts=DEBUG in my log4j.properties. In the log, after form submission, the following info appears: DEBUG: RequestUtils.createActionForm.300 - -- [EMAIL PROTECTED] (21 feb 2006 17:59:31,156) DEBUG: RequestProcessor.processActionForm.327 - Storing ActionForm bean instance in scope 'request' under attribute key 'incidentForm' (21 feb 2006 17:59:31,156) DEBUG: RequestProcessor.processPopulate.793 - Populating bean properties from this request (21 feb 2006 17:59:35,616) DEBUG: CommonsMultipartRequestHandler.getRepositoryPath.388 - File upload temp dir: C:\dev\workspace-reconstruct-hibernate\Attend\work\org\apache\jsp (21 feb 2006 17:59:35,772) What could be the cause of this excessive memory increase? Could it be that the entire Struts config is accidentally reloaded because of a problem in our configuration? Thanks, Willem - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RequestProcessor processPopulate heavily increases memory usage
Hi, Last week we migrated our Struts 1.0 application to 1.2.8. As far as we can tell, we correctly followed the migration steps inbetween. Since the migration we have noticed the following weird behaviour: upon submitting a form from a jsp to as struts form/action, the method processPopulate of RequestProcessor will increase memory usage on our windows box by some 30M for each call. Unfortunately, this extra memory is not freed, not even after waiting more than say one hour. After a few such requests, needless to say, this produces OutOfMemoryErrors. I pinpointed the memory usage to this method by setting log4j.logger.org.apache.struts=DEBUG in my log4j.properties. In the log, after form submission, the following info appears: DEBUG: RequestUtils.createActionForm.300 - -- [EMAIL PROTECTED] (21 feb 2006 17:59:31,156) DEBUG: RequestProcessor.processActionForm.327 - Storing ActionForm bean instance in scope 'request' under attribute key 'incidentForm' (21 feb 2006 17:59:31,156) DEBUG: RequestProcessor.processPopulate.793 - Populating bean properties from this request (21 feb 2006 17:59:35,616) DEBUG: CommonsMultipartRequestHandler.getRepositoryPath.388 - File upload temp dir: C:\dev\workspace-reconstruct-hibernate\Attend\work\org\apache\jsp (21 feb 2006 17:59:35,772) What could be the cause of this excessive memory increase? Could it be that the entire Struts config is accidentally reloaded because of a problem in our configuration? Thanks, Willem
Re: RequestProcessor processPopulate heavily increases memory usage
Do you have a session scoped form with one or more FormFile properties? Consider switching the scope to request, or alternatively, using the controller element to reduce the size of the in-memory file representation before the data is written to disk (see the memFileSize attribute described at http://struts.apache.org/struts-action/userGuide/configuration.html#controller_config ) Joe At 6:12 PM +0100 2/21/06, [EMAIL PROTECTED] wrote: Hi, Last week we migrated our Struts 1.0 application to 1.2.8. As far as we can tell, we correctly followed the migration steps inbetween. Since the migration we have noticed the following weird behaviour: upon submitting a form from a jsp to as struts form/action, the method processPopulate of RequestProcessor will increase memory usage on our windows box by some 30M for each call. Unfortunately, this extra memory is not freed, not even after waiting more than say one hour. After a few such requests, needless to say, this produces OutOfMemoryErrors. I pinpointed the memory usage to this method by setting log4j.logger.org.apache.struts=DEBUG in my log4j.properties. In the log, after form submission, the following info appears: DEBUG: RequestUtils.createActionForm.300 - -- [EMAIL PROTECTED] (21 feb 2006 17:59:31,156) DEBUG: RequestProcessor.processActionForm.327 - Storing ActionForm bean instance in scope 'request' under attribute key 'incidentForm' (21 feb 2006 17:59:31,156) DEBUG: RequestProcessor.processPopulate.793 - Populating bean properties from this request (21 feb 2006 17:59:35,616) DEBUG: CommonsMultipartRequestHandler.getRepositoryPath.388 - File upload temp dir: C:\dev\workspace-reconstruct-hibernate\Attend\work\org\apache\jsp (21 feb 2006 17:59:35,772) What could be the cause of this excessive memory increase? Could it be that the entire Struts config is accidentally reloaded because of a problem in our configuration? Thanks, Willem -- Joe Germuska [EMAIL PROTECTED] * http://blog.germuska.com You really can't burn anything out by trying something new, and even if you can burn it out, it can be fixed. Try something new. -- Robert Moog - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RequestProcessor processPopulate heavily increases memory usage
Session-scoped form can affect memory footprint on the first load and barely on update. He gets +30M on each load. I doubt that reasonably designed session-scoped form can be at fault here. It would sit there, but it would not grow that fast. There should be something else that he allocates. BTW, his log shows request-scoped form. Willem, try to create an empty action/form pair and test it. I suppose this is something that you create. Michael. On 2/21/06, Joe Germuska [EMAIL PROTECTED] wrote: Do you have a session scoped form with one or more FormFile properties? Consider switching the scope to request, or alternatively, using the controller element to reduce the size of the in-memory file representation before the data is written to disk (see the memFileSize attribute described at http://struts.apache.org/struts-action/userGuide/configuration.html#controller_config ) Joe At 6:12 PM +0100 2/21/06, [EMAIL PROTECTED] wrote: Hi, Last week we migrated our Struts 1.0 application to 1.2.8. As far as we can tell, we correctly followed the migration steps inbetween. Since the migration we have noticed the following weird behaviour: upon submitting a form from a jsp to as struts form/action, the method processPopulate of RequestProcessor will increase memory usage on our windows box by some 30M for each call. Unfortunately, this extra memory is not freed, not even after waiting more than say one hour. After a few such requests, needless to say, this produces OutOfMemoryErrors. I pinpointed the memory usage to this method by setting log4j.logger.org.apache.struts=DEBUG in my log4j.properties. In the log, after form submission, the following info appears: DEBUG: RequestUtils.createActionForm.300 - -- [EMAIL PROTECTED] (21 feb 2006 17:59:31,156) DEBUG: RequestProcessor.processActionForm.327 - Storing ActionForm bean instance in scope 'request' under attribute key 'incidentForm' (21 feb 2006 17:59:31,156) DEBUG: RequestProcessor.processPopulate.793 - Populating bean properties from this request (21 feb 2006 17:59:35,616) DEBUG: CommonsMultipartRequestHandler.getRepositoryPath.388 - File upload temp dir: C:\dev\workspace-reconstruct-hibernate\Attend\work\org\apache\jsp (21 feb 2006 17:59:35,772) What could be the cause of this excessive memory increase? Could it be that the entire Struts config is accidentally reloaded because of a problem in our configuration? Thanks, Willem - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: memory usage
Hi you can use Jmeter or Jmap or JProbe tools to analyse the heap memory and objects memory I think it may help you With Regards Praveen [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: I'm not sure I understand your gasps at my question. To extend on the that's like buying a truck asking them how much it will weight when you fill it up -- I can calculate the memory usage of the parts that I implement on behalf of my application itself. Obviously no one can speak to the size of the memory usage of the applications specific objects that I create, things, I put in session, etc. However, this isn't my question. My question seems answerable enough. I just want to know how much memory the struts framework tend to take up by itself, OR, alternately, what are the areas of memory usage to examine to decide such a thing. Is this really not easily determined? What would make it so hard to determine? --- On Tue 02/14, Dave Newton [EMAIL PROTECTED] wrote: From: Dave Newton [mailto: [EMAIL PROTECTED] To: user@struts.apache.org Date: Tue, 14 Feb 2006 11:24:58 -0500 Subject: Re: memory usage James Mitchell wrote: LOL! That's like buying a truck from Ford, and then asking them how much it will weigh when you fill it up.That's a better answer than mine; I was just gonna say 15K and call itday.Dave You don't code your Struts in assembly?!-To unsubscribe, e-mail: [EMAIL PROTECTED] additional commands, e-mail: [EMAIL PROTECTED] ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - What are the most popular cars? Find out at Yahoo! Autos
Re: memory usage
LOL! That's like buying a truck from Ford, and then asking them how much it will weigh when you fill it up. -- James Mitchell EdgeTech, Inc. http://edgetechservices.net/ 678.910.8017 Skype: jmitchtx On Feb 13, 2006, at 5:00 PM, [EMAIL PROTECTED] wrote: Let me know if this is not a very good question. I need to know roughly how much memory a struts application uses. What is the equation? framework objects + application actions and forms + ?? My java classes that represent my business logic won't be in memory until an action executes . . . correct? ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: memory usage
James Mitchell wrote: LOL! That's like buying a truck from Ford, and then asking them how much it will weigh when you fill it up. That's a better answer than mine; I was just gonna say 15K and call it day. Dave You don't code your Struts in assembly?! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: memory usage
I'm not sure I understand your gasps at my question. To extend on the that's like buying a truck asking them how much it will weight when you fill it up -- I can calculate the memory usage of the parts that I implement on behalf of my application itself. Obviously no one can speak to the size of the memory usage of the applications specific objects that I create, things, I put in session, etc. However, this isn't my question. My question seems answerable enough. I just want to know how much memory the struts framework tend to take up by itself, OR, alternately, what are the areas of memory usage to examine to decide such a thing. Is this really not easily determined? What would make it so hard to determine? --- On Tue 02/14, Dave Newton [EMAIL PROTECTED] wrote: From: Dave Newton [mailto: [EMAIL PROTECTED] To: user@struts.apache.org Date: Tue, 14 Feb 2006 11:24:58 -0500 Subject: Re: memory usage James Mitchell wrote: LOL! That's like buying a truck from Ford, and then asking them how much it will weigh when you fill it up.That's a better answer than mine; I was just gonna say 15K and call itday.Dave You don't code your Struts in assembly?!-To unsubscribe, e-mail: [EMAIL PROTECTED] additional commands, e-mail: [EMAIL PROTECTED] ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: memory usage
The footprint is still driven by your specific implementation. The more session based form beans you use, the larger the footprint. How should we determine this? I guess you could run the struts-blank application, and measure that. Would that be accurate? Probably not. -- James Mitchell EdgeTech, Inc. http://edgetechservices.net/ 678.910.8017 Skype: jmitchtx On Feb 14, 2006, at 1:07 PM, [EMAIL PROTECTED] wrote: I'm not sure I understand your gasps at my question. To extend on the that's like buying a truck asking them how much it will weight when you fill it up -- I can calculate the memory usage of the parts that I implement on behalf of my application itself. Obviously no one can speak to the size of the memory usage of the applications specific objects that I create, things, I put in session, etc. However, this isn't my question. My question seems answerable enough. I just want to know how much memory the struts framework tend to take up by itself, OR, alternately, what are the areas of memory usage to examine to decide such a thing. Is this really not easily determined? What would make it so hard to determine? --- On Tue 02/14, Dave Newton [EMAIL PROTECTED] wrote: From: Dave Newton [mailto: [EMAIL PROTECTED] To: user@struts.apache.org Date: Tue, 14 Feb 2006 11:24:58 -0500 Subject: Re: memory usage James Mitchell wrote: LOL! That's like buying a truck from Ford, and then asking them how much it will weigh when you fill it up.That's a better answer than mine; I was just gonna say 15K and call itday.Dave You don't code your Struts in assembly?!--- --To unsubscribe, e-mail: user- [EMAIL PROTECTED] additional commands, e-mail: user- [EMAIL PROTECTED] ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: memory usage
James Mitchell wrote: The footprint is still driven by your specific implementation. The more session based form beans you use, the larger the footprint. How should we determine this? I guess you could run the struts-blank application, and measure that. Would that be accurate? Probably not. Heck, it might even depend on the app server and JVM... Dave - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: memory usage
Yeah, but there is a weight class to it. Shawn -Original Message- From: James Mitchell [mailto:[EMAIL PROTECTED] Sent: Tuesday, February 14, 2006 10:20 AM To: Struts Users Mailing List Subject: Re: memory usage LOL! That's like buying a truck from Ford, and then asking them how much it will weigh when you fill it up. -- James Mitchell EdgeTech, Inc. http://edgetechservices.net/ 678.910.8017 Skype: jmitchtx On Feb 13, 2006, at 5:00 PM, [EMAIL PROTECTED] wrote: Let me know if this is not a very good question. I need to know roughly how much memory a struts application uses. What is the equation? framework objects + application actions and forms + ?? My java classes that represent my business logic won't be in memory until an action executes . . . correct? ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This email may contain confidential material. If you were not an intended recipient, Please notify the sender and delete all copies. We may monitor email to and from our network. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: memory usage
You can tell him numbers with how many actions and how many form-beans. The memory the Servlet itself should be pretty constant. Shawn -Original Message- From: James Mitchell [mailto:[EMAIL PROTECTED] Sent: Tuesday, February 14, 2006 12:28 PM To: Struts Users Mailing List Subject: Re: memory usage The footprint is still driven by your specific implementation. The more session based form beans you use, the larger the footprint. How should we determine this? I guess you could run the struts-blank application, and measure that. Would that be accurate? Probably not. -- James Mitchell EdgeTech, Inc. http://edgetechservices.net/ 678.910.8017 Skype: jmitchtx On Feb 14, 2006, at 1:07 PM, [EMAIL PROTECTED] wrote: I'm not sure I understand your gasps at my question. To extend on the that's like buying a truck asking them how much it will weight when you fill it up -- I can calculate the memory usage of the parts that I implement on behalf of my application itself. Obviously no one can speak to the size of the memory usage of the applications specific objects that I create, things, I put in session, etc. However, this isn't my question. My question seems answerable enough. I just want to know how much memory the struts framework tend to take up by itself, OR, alternately, what are the areas of memory usage to examine to decide such a thing. Is this really not easily determined? What would make it so hard to determine? --- On Tue 02/14, Dave Newton [EMAIL PROTECTED] wrote: From: Dave Newton [mailto: [EMAIL PROTECTED] To: user@struts.apache.org Date: Tue, 14 Feb 2006 11:24:58 -0500 Subject: Re: memory usage James Mitchell wrote: LOL! That's like buying a truck from Ford, and then asking them how much it will weigh when you fill it up.That's a better answer than mine; I was just gonna say 15K and call itday.Dave You don't code your Struts in assembly?!--- --To unsubscribe, e-mail: user- [EMAIL PROTECTED] additional commands, e-mail: user- [EMAIL PROTECTED] ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This email may contain confidential material. If you were not an intended recipient, Please notify the sender and delete all copies. We may monitor email to and from our network. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: memory usage
Are you using r/o request beans or session r/w beans? How many users at a time? What is the mix? How many bytes per columns/rows? (ex: displaytag) Also, what is your DAO (data) caching plans? This in my designs is majority of RAM usage. I built one site to support 10,000 concurent users, and we used 64 bit CPU (AMD) on servers ( 6 of them) to be able to address 4 gig JVM space to do more DAO caching of blobs (media/images) Mostly this shakes itself out during stress testing (and struts is great at this since you can test your M (Data) layer by itself). So since majority of memory is related to your domain (business app area) The struts servlets takes very few bytes itself and there is one of each (even for multiple sessions). hth, .V [EMAIL PROTECTED] wrote: I'm not sure I understand your gasps at my question. To extend on the that's like buying a truck asking them how much it will weight when you fill it up -- I can calculate the memory usage of the parts that I implement on behalf of my application itself. Obviously no one can speak to the size of the memory usage of the applications specific objects that I create, things, I put in session, etc. However, this isn't my question. My question seems answerable enough. I just want to know how much memory the struts framework tend to take up by itself, OR, alternately, what are the areas of memory usage to examine to decide such a thing. Is this really not easily determined? What would make it so hard to determine? --- On Tue 02/14, Dave Newton [EMAIL PROTECTED] wrote: From: Dave Newton [mailto: [EMAIL PROTECTED] To: user@struts.apache.org Date: Tue, 14 Feb 2006 11:24:58 -0500 Subject: Re: memory usage James Mitchell wrote: LOL! That's like buying a truck from Ford, and then asking them how much it will weigh when you fill it up.That's a better answer than mine; I was just gonna say 15K and call itday.Dave You don't code your Struts in assembly?!-To unsubscribe, e-mail: [EMAIL PROTECTED] additional commands, e-mail: [EMAIL PROTECTED] ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
memory usage
Let me know if this is not a very good question. I need to know roughly how much memory a struts application uses. What is the equation? framework objects + application actions and forms + ?? My java classes that represent my business logic won't be in memory until an action executes . . . correct? ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[OT: Session memory usage/other means] Re: Multi Step Forms
Rick Reumann wrote: Hi my name is Rick and I use the Session to store objects. Hi Rick! SUA - Session Users Anonymous - meeting/ Let's all thank Rick for sharing his story. *clap clap clap* Group hug! Well after looking for what was actually causing the out of memory problems, and determining it was just a matter of some necessary beans in Session scope causing the problem, than yes, add more memory etc. Without using even marginally over-spec'ed servers I have yet to run out of memory, and I tend to store things in session, including shopping carts, whenever it's necessary or convenient to do so. Maybe it's just because I don't store huge objects in session (in general), but even on a Torque-based app when I keep Torque beans in session I'm still not running out of room. (That's a relatively low-load app, though; it's never been stressed.) On an internal app at one of my clients, not using torque but more or less plain old beans with specific functionality on a 1G machine with (typically) 500 users connected at any given time I was never in danger of breaking anything, though. (DB hosted on another machine.) Even if I'm storing, say, 100K of crap in the session for each user (which I definitely wasn't), that's 50M of session crap. That's a lot of crap. But it's still like 5% of my memory. (Right? I have a fever today and math cells are the first to go--marked for early swap.) So it's difficult for me to get all worked up about it, especially considering time and maintainence constraints. Dave - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Object size/memory usage
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On Monday 25 October 2004 16.34, Zhang, Larry (L.) wrote:
Let's say I have two object
public calss Object1{
private name;
private id;
private depetId;
}
public calss Object2{
private name;
private id;
private depetId;
private country;
private jobFamily;
private isActive;
. (there are another 100 attributes)
}
Object1 obj1= new Object1(); and set all attributes (name, id, depetId)
of this object.
Object2 obj2 = new Object2(); and then set the first three
attributes(name, id, depetId).
My question is that is obj1 and obj2 of the same size or usage of
memory?
No, object 2 will take more memory.
If your attributes are primitive types (int, boolean, ...), they will be
allocated at the object creation. If your attributes are Objects, the
reference will be allocated at object creation, but the object the reference
is pointing to will not be allocated.
I dont know what's the exact size of a reference in Java (probably 32 or 64
bits). Anyway, the size of the ref is probably small compared to the size of
an allocated object (depends on the size of your object).
I hope it answers your question ...
Guillaume Lederrey
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IQM2kZkmfljZjGSGFRi1h8E=
=zM/T
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Object size/memory usage
Let's say I have two object
public calss Object1{
private name;
private id;
private depetId;
}
public calss Object2{
private name;
private id;
private depetId;
private country;
private jobFamily;
private isActive;
. (there are another 100 attributes)
}
Then I create
Object1 obj1= new Object1(); and set all attributes (name, id, depetId)
of this object.
Object2 obj2 = new Object2(); and then set the first three
attributes(name, id, depetId).
My question is that is obj1 and obj2 of the same size or usage of
memory?
Thanks.
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