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From "Allistair Crossley" <Allistair.Cross...@QAS.com>
Subject RE: Performance issue
Date Tue, 07 Sep 2004 09:49:18 GMT
are your dev and prod running the same number of web applications with the same number of users?

try jprofiler/jprobe or optimizeit to see what is going on

> -----Original Message-----
> From: Bedrijven.nl [mailto:maarten@bedrijven.nl]
> Sent: 07 September 2004 09:31
> To: 'Tomcat Users List'
> Subject: RE: Performance issue
> 
> 
> First of all our production server is only serving our 
> webapps. Nothing else
> (only emailserver installed as well). The searchpage search 
> in the DB. The
> DB are also seperated of course. But we can leave out the db 
> since the data
> is stored in hashmaps and i use connection pooling too. It 
> isnt the search
> that give a problem, since searching is must faster in our production
> environment. It's just reloading a jsp. That means a jsp page 
> with some
> dropdownlists. This is the same on production as development 
> as well. When I
> reload the page on the development server, it;s click and 
> it's there. On the
> productionserver he needs some time (max 1 second) to reload 
> the page. It
> seems it had to do something with cashing ore something???
> 
> Maarten
> 
> -----Oorspronkelijk bericht-----
> Van: Allistair Crossley [mailto:Allistair.Crossley@QAS.com]
> Verzonden: Tuesday, September 07, 2004 9:27 AM
> Aan: Tomcat Users List
> Onderwerp: RE: Performance issue
> 
> 
> by load i meant that the production server may be having its 
> cpu/memory used
> by other processes. are you saying that dev and prod servers are doing
> nothing else but serving your webapp? if not you should list all the
> differences, e.g what applications or software is each server 
> running - are
> there any differences? you can take a basic look at the cpu 
> and memory usage
> on both servers using the windows task manager.
> 
> what does your search page search for? does it search a 
> database? does that
> same database get searched by dev and prod?
> 
> ADC
> 
> > Hi ADC,
> > 
> > First of all I use connection pooling (JSQLConnect) and put 
> > values in cache
> > (hashmaps) so constant data retrieved once and deliver many. 
> > Let give an
> > example of which pages this is happening:
> > 
> > search.jsp: this jsp has multiple dropdownboxes. The data 
> > will be retrieved
> > from the server in a Vector and this data is qua volume on both (the
> > development as production) server the same. That means that 
> > all the content
> > of the dropdownlists are the same. So I may expect that there is no
> > difference in volume?? Or do you ment something different 
> > with that?? On a
> > reload the data within the dropdownlists are retrieved from 
> > the servercache
> > (lookup data is stored in a HashMap). So I don't know that's 
> > the problem.
> > How do you solve this problem?? The problem now is that one 
> > applications
> > causes an error (i don't know what, since there is nothing 
> > within the log)
> > and tomcat restarts.
> > 
> > Maarten
> > 
> > 
> > 
> > -----Oorspronkelijk bericht-----
> > Van: Allistair Crossley [mailto:Allistair.Crossley@QAS.com]
> > Verzonden: Tuesday, September 07, 2004 9:01 AM
> > Aan: Tomcat Users List; maarten@bedrijven.nl
> > Onderwerp: RE: Performance issue
> > 
> > 
> > it's an interesting one and one that we found too between our 
> > dev 1 cpu,
> > w2k, 512mb ram, tomcat 5.0.19 and production 2 cpu, w2k, 1gb 
> > ram, tomcat
> > 5.0.19. In both cases we use a content management system 
> > backend and sql
> > server. 
> > 
> > for us we found that the volume of content in our cms on the 
> > production box
> > was 10 times that of the development box and so this slowed 
> > the cms down
> > making it look like tomcat was taking its time. also the sql 
> > server load on
> > production is larger so database ops take longer.
> > 
> > you ought to consider whether any dependent backend systems 
> like cms,
> > database, crm etc.. are used in a different way between dev 
> > and production.
> > i do not think your problem is tomcat.
> > 
> > cheers, ADC
> > 
> > > -----Original Message-----
> > > From: Bedrijven.nl [mailto:maarten@bedrijven.nl]
> > > Sent: 07 September 2004 08:30
> > > To: 'Tomcat Users List'
> > > Subject: Performance issue
> > > 
> > > 
> > > Hello all,
> > > 
> > > Maybe a rare question but it's very important for us. 
> > What's the case:
> > > 
> > > * I have a development environment running our applications 
> > > (simple server,
> > > WIN 2000 Server, Tomcat 4.0.24, struts, max memorysize 
> appr. 320 MB)
> > > * I have a production environment running our applications 
> > > (extended server,
> > > WIN 2000 Server, Tomcat 4.0.24, struts, max memorysize 
> appr. 1 GB, 4
> > > processors)
> > > 
> > > Now in our applications we have some jsp pages (i.e. 
> > > searchpages). So what's
> > > my problem. When I reload a page (submit some action the the 
> > > form/actionbean
> > > of struts) it's faster on our development system than on our 
> > > production
> > > system. So normally it's should be so that jsp files should 
> > > be faster on our
> > > production environment because the server is a lot "bigger". 
> > > On the other
> > > hand the compilation of jsp's is faster (as expected) on the 
> > > production
> > > environment. Are there some settings in server.xml (or 
> > > web.xml) that causes
> > > this???
> > > 
> > > Thx in advanced!
> > > 
> > > Maarten
> > > 
> > > 
> > > 
> > 
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> > 
> > 
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