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From "Michal Glowacki" ...@projektpro.internetdsl.pl>
Subject Re: Performance problem with Tomcat?
Date Fri, 16 Feb 2007 10:08:18 GMT
Thanks for the hints.

One more question, after upgrading server deployment of WAR files is much 
more longer than before. It's something like with those pages. I've got info 
in console about undeploy of war (that I'm replacing with new one), nothing 
happens for more than 15 secs, and then deployment info appears. Is this 
tomcat and if yes what can I do about this?

Regards,
Michal

----- Original Message ----- 
From: "Zack Grafton" <zachary.grafton@gmail.com>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Friday, February 16, 2007 7:50 AM
Subject: Re: Performance problem with Tomcat?


> Michal,
>
> This is the link to precompiling your JSP files.
> http://tomcat.apache.org/tomcat-5.5-doc/jasper-howto.html
>
> You might need to live with it while you're developing the application, 
> but when you are ready to put it in to production, it might be wise to 
> precompiling the JSP files.
>
> Zack
>
> Michal Glowacki wrote:
>> 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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>>
>>
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>>
>
>
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