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From "Michal Glowacki" ...@projektpro.internetdsl.pl>
Subject Re: Performance problem with Tomcat?
Date Fri, 16 Feb 2007 06:24:03 GMT
That is right, only for the first time, even 10-12 secs, but later maximum 
2.

Thanks for all help,
Michal

----- Original Message ----- 
From: "Zack Grafton" <zachary.grafton@gmail.com>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Thursday, February 15, 2007 5:43 PM
Subject: Re: Performance problem with Tomcat?


> Michal,
>
> Your JSP files will be compiled regardless the first time they are 
> accessed.  If you try refreshing the page, or loading it in a different 
> browser, you might notice a speed up.  You can also precompile your JSP 
> files and that should also speed up the first access.  Please let us know 
> if it is just the first visit or if the problem happens on every access.
>
> Zack
>
>
> Michal Glowacki wrote:
>> Thank you for your fast response!
>>
>>> Which version of EJB. Local EJB of remote EJB? With or without security?
>>> EJBs have the bad reputation to be slow, and cubersome to develop
>>> (probably improved in version 3, this was an aim at sun)
>>
>> It's EJB 2.1 (JBoss 4). I'm using remote interfaces everywhere, that's 
>> what I read in the books - local interfaces are used very seldom. For 
>> read-only data I'm creating DAOs, but it doesn't improves performance 
>> significantly.
>>
>>> 1) JSF servlet startup, that may take a few seconds and occurs at first
>>> jsf operation after webapp startup
>>
>> Ok, that means that I can experience latency during development as I 
>> redeploy app very often, but when finished and deployed to target server 
>> it should not happen?
>>
>>> 2) JSP compilation, which occurs if your jsp did change
>>
>> It's deployed as war file, probably extracted to 
>> jboss/server/default/temp directory, and I do not change there anything. 
>> I believe this is not the cause as I'm changing JSPs only in IDE before 
>> deploy.
>>
>>> 3) JSP initialisation, which occur during first access of JSP, after
>>> compilation, like any other servlet. Depending on how much taglibs are
>>> referenced, and complexity of JSP, this can take a bit of time too.
>>
>> Like 1)
>>
>>> 4) The operations you do inside your JSF backing beans
>>
>> Yes, but this I can measure and reduce, this part is understable for me.
>>
>>
>> Regards,
>> Michal
>>
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>
>
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