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Posted to users@tomcat.apache.org by "M. Manna" <ma...@gmail.com> on 2018/05/02 09:31:40 UTC
Jsp pages with scriptlet and javadoc comments loaded in char[]
Hi All,
I had a specific question regarding JSPs loaded in web-application
container for jasper to compilation. If I have a JSP page which has
scriptlet and javadoc comments/code comments, aren't those loaded into the
char[] of JSP pages too? I understand that Jasper compiles the JSPs but
those comments aren't stripped out (apologies if I have missed something in
source code). I am using tomcat 8.5.28.
In other words, by cutting down all javadoc comments/commented code from
JSP scriptlets, can I assume some savings will be made in terms of char[]
memory size when my servers are very busy? I have about ~3k JSP pages with
a mixture of nice clean JSPs and really messy scriptlets. And I am trying
to find some options to tune GC and see if reducing char[] sizes can help
me in any way.
Regards,
Re: Jsp pages with scriptlet and javadoc comments loaded in char[]
Posted by "Terence M. Bandoian" <te...@tmbsw.com>.
On 5/2/2018 07:30, M. Manna wrote:
> Hi Mark,
>
> Basically, our application has quite a lot of large objects which are
> singletons. When we checked the list of char[] objects loaded in the
> memory, some of them showed JspServlet related Strings and had commented
> code loaded into char[].
> we have quite a lot of Strings loaded in memory (using maps) which are
> necessary. heap-dump will always report this as a memleak but it's not - So
> trying to understand whether we can utilise anything from tomcat side to
> remove
> I understand it sounds odd, but at that point it appeared to be something
> we can just strip out. But from your comments, it doesn't seem to be an
> option.
>
> Thanks,
Pre-compiling the JSP pages might be worth consideration.
-Terence Bandoian
> On 2 May 2018 at 10:39, Mark Thomas <ma...@apache.org> wrote:
>
>> On 02/05/18 10:31, M. Manna wrote:
>>> Hi All,
>>>
>>> I had a specific question regarding JSPs loaded in web-application
>>> container for jasper to compilation. If I have a JSP page which has
>>> scriptlet and javadoc comments/code comments, aren't those loaded into
>> the
>>> char[] of JSP pages too?
>> No.
>>
>>> I understand that Jasper compiles the JSPs but
>>> those comments aren't stripped out (apologies if I have missed something
>> in
>>> source code). I am using tomcat 8.5.28.
>> Yes, they are. HTML comments (which are essentially template text) are not.
>>
>>> In other words, by cutting down all javadoc comments/commented code from
>>> JSP scriptlets, can I assume some savings will be made in terms of char[]
>>> memory size when my servers are very busy? I have about ~3k JSP pages
>> with
>>> a mixture of nice clean JSPs and really messy scriptlets. And I am trying
>>> to find some options to tune GC and see if reducing char[] sizes can help
>>> me in any way.
>> Seems like an odd way to tune GC. What problem are you trying to solve?
>>
>> Mark
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>>
Re: Jsp pages with scriptlet and javadoc comments loaded in char[]
Posted by "M. Manna" <ma...@gmail.com>.
Hi Mark,
Basically, our application has quite a lot of large objects which are
singletons. When we checked the list of char[] objects loaded in the
memory, some of them showed JspServlet related Strings and had commented
code loaded into char[].
we have quite a lot of Strings loaded in memory (using maps) which are
necessary. heap-dump will always report this as a memleak but it's not - So
trying to understand whether we can utilise anything from tomcat side to
remove
I understand it sounds odd, but at that point it appeared to be something
we can just strip out. But from your comments, it doesn't seem to be an
option.
Thanks,
On 2 May 2018 at 10:39, Mark Thomas <ma...@apache.org> wrote:
> On 02/05/18 10:31, M. Manna wrote:
> > Hi All,
> >
> > I had a specific question regarding JSPs loaded in web-application
> > container for jasper to compilation. If I have a JSP page which has
> > scriptlet and javadoc comments/code comments, aren't those loaded into
> the
> > char[] of JSP pages too?
>
> No.
>
> > I understand that Jasper compiles the JSPs but
> > those comments aren't stripped out (apologies if I have missed something
> in
> > source code). I am using tomcat 8.5.28.
>
> Yes, they are. HTML comments (which are essentially template text) are not.
>
> > In other words, by cutting down all javadoc comments/commented code from
> > JSP scriptlets, can I assume some savings will be made in terms of char[]
> > memory size when my servers are very busy? I have about ~3k JSP pages
> with
> > a mixture of nice clean JSPs and really messy scriptlets. And I am trying
> > to find some options to tune GC and see if reducing char[] sizes can help
> > me in any way.
>
> Seems like an odd way to tune GC. What problem are you trying to solve?
>
> Mark
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
Re: Jsp pages with scriptlet and javadoc comments loaded in char[]
Posted by Mark Thomas <ma...@apache.org>.
On 02/05/18 10:31, M. Manna wrote:
> Hi All,
>
> I had a specific question regarding JSPs loaded in web-application
> container for jasper to compilation. If I have a JSP page which has
> scriptlet and javadoc comments/code comments, aren't those loaded into the
> char[] of JSP pages too?
No.
> I understand that Jasper compiles the JSPs but
> those comments aren't stripped out (apologies if I have missed something in
> source code). I am using tomcat 8.5.28.
Yes, they are. HTML comments (which are essentially template text) are not.
> In other words, by cutting down all javadoc comments/commented code from
> JSP scriptlets, can I assume some savings will be made in terms of char[]
> memory size when my servers are very busy? I have about ~3k JSP pages with
> a mixture of nice clean JSPs and really messy scriptlets. And I am trying
> to find some options to tune GC and see if reducing char[] sizes can help
> me in any way.
Seems like an odd way to tune GC. What problem are you trying to solve?
Mark
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