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Posted to users@tomcat.apache.org by "Asensio, Rodrigo" <ro...@gilbarco.com> on 2006/09/05 22:14:39 UTC
max memory..
Hello guys
tomcat 5517
java 1508
win 2003 server
I have available 4 gb of ram memory into the server. My tomcat is
running with 1024 mb right now.
Before start to optimize my functions :D , can I move to 2048mb without
any problem ?
memory settings has always to be pow of 2 ?
thanks
Rodrigo
-------------------------------------------------------------------
Rodrigo Asensio
Fuel Management Services
Gilbarco Veeder Root
phone: +1 336 547 5023
email: rodrigo.asensio@gilbarco.com
<ma...@gilbarco.com>
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Re: max memory..
Posted by Andrew Miehs <an...@2sheds.de>.
I discovered no difference in performance between running 1 tomcat, or 4
tomcats on the one machine - same performance.
The machine was a 4x Opteron 870 with 8GB RAM, running Java 1.5.6 32bit.
Andrew
Boris Unckel wrote:
> Hello,
>
> >> can I move to 2048mb without any problem ?
> Leon Rosenberg wrote:
>> are you using a 64bit version? If yes than the answer is yes.
>> Otherwise its probably no :-)
> Is this really just a 32 vs 64bit decision? What about garbage
> collection cycles?
> What about more than one instance of tomcat for the same application on
> the same machine
> (scaling somehow vertically)?
>
> Regards
> Boris
>
>
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Re: max memory..
Posted by Leon Rosenberg <ro...@googlemail.com>.
Boris, search the archives, Chrales once gava a detailed answer on this topic.
Short version:
until you have > 8 processors you shouldn't worry about the garbage collector.
If you have >8 you should set the number of garbage collection threads
accordingly.
leon
On 9/5/06, Boris Unckel <bo...@gmx.net> wrote:
> Hello,
>
> >> can I move to 2048mb without any problem ?
> Leon Rosenberg wrote:
> > are you using a 64bit version? If yes than the answer is yes.
> > Otherwise its probably no :-)
> Is this really just a 32 vs 64bit decision? What about garbage
> collection cycles?
> What about more than one instance of tomcat for the same application on
> the same machine
> (scaling somehow vertically)?
>
> Regards
> Boris
>
>
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
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Re: max memory..
Posted by Boris Unckel <bo...@gmx.net>.
Hello,
>> can I move to 2048mb without any problem ?
Leon Rosenberg wrote:
> are you using a 64bit version? If yes than the answer is yes.
> Otherwise its probably no :-)
Is this really just a 32 vs 64bit decision? What about garbage
collection cycles?
What about more than one instance of tomcat for the same application on
the same machine
(scaling somehow vertically)?
Regards
Boris
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Re: max memory..
Posted by Nikita Tovstoles <ni...@doppelganger.com>.
There would be no adverse effect on garbage collection (i.e. longer GC
times) when moving from max heap of 1gb to 4gb?
-nikita
Leon Rosenberg wrote:
> are you using a 64bit version? If yes than the answer is yes.
> Otherwise its probably no :-)
>
> regards
> Leon
>
> On 9/5/06, Asensio, Rodrigo <ro...@gilbarco.com> wrote:
>> Hello guys
>>
>> tomcat 5517
>> java 1508
>> win 2003 server
>>
>> I have available 4 gb of ram memory into the server. My tomcat is
>> running with 1024 mb right now.
>> Before start to optimize my functions :D , can I move to 2048mb without
>> any problem ?
>> memory settings has always to be pow of 2 ?
>>
>> thanks
>> Rodrigo
>>
>> -------------------------------------------------------------------
>> Rodrigo Asensio
>> Fuel Management Services
>> Gilbarco Veeder Root
>> phone: +1 336 547 5023
>> email: rodrigo.asensio@gilbarco.com
>> <ma...@gilbarco.com>
>>
>>
>>
>> This message (including any attachments) contains confidential
>> and/or proprietary information intended only for the addressee.
>> Any unauthorized disclosure, copying, distribution or reliance on
>> the contents of this information is strictly prohibited and may
>> constitute a violation of law. If you are not the intended
>> recipient, please notify the sender immediately by responding to
>> this e-mail, and delete the message from your system. If you
>> have any questions about this e-mail please notify the sender
>> immediately.
>>
>
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> To start a new topic, e-mail: users@tomcat.apache.org
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Re: max memory..
Posted by Leon Rosenberg <ro...@googlemail.com>.
are you using a 64bit version? If yes than the answer is yes.
Otherwise its probably no :-)
regards
Leon
On 9/5/06, Asensio, Rodrigo <ro...@gilbarco.com> wrote:
> Hello guys
>
> tomcat 5517
> java 1508
> win 2003 server
>
> I have available 4 gb of ram memory into the server. My tomcat is
> running with 1024 mb right now.
> Before start to optimize my functions :D , can I move to 2048mb without
> any problem ?
> memory settings has always to be pow of 2 ?
>
> thanks
> Rodrigo
>
> -------------------------------------------------------------------
> Rodrigo Asensio
> Fuel Management Services
> Gilbarco Veeder Root
> phone: +1 336 547 5023
> email: rodrigo.asensio@gilbarco.com
> <ma...@gilbarco.com>
>
>
>
> This message (including any attachments) contains confidential
> and/or proprietary information intended only for the addressee.
> Any unauthorized disclosure, copying, distribution or reliance on
> the contents of this information is strictly prohibited and may
> constitute a violation of law. If you are not the intended
> recipient, please notify the sender immediately by responding to
> this e-mail, and delete the message from your system. If you
> have any questions about this e-mail please notify the sender
> immediately.
>
---------------------------------------------------------------------
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Re: max memory..
Posted by anjan bacchu <an...@gmail.com>.
can I move to 2048mb without any problem ? SURE, YES
4 GB RAM -- did you tune the BOOT.INI setting to use the /3GB setting so
that the
user process address space goes to 3 GB(from 2 GB default) ?
related things for performance :
are you using the APR extension ?
how about tweaking the server.xml threads, max settings ?
does your server use virtual memory ? I have seen better memory when no
virtual memory is used.
BR,
~A
On 9/5/06, Asensio, Rodrigo <ro...@gilbarco.com> wrote:
>
> Hello guys
>
> tomcat 5517
> java 1508
> win 2003 server
>
> I have available 4 gb of ram memory into the server. My tomcat is
> running with 1024 mb right now.
> Before start to optimize my functions :D , can I move to 2048mb without
> any problem ?
> memory settings has always to be pow of 2 ?
>
> thanks
> Rodrigo
>
> -------------------------------------------------------------------
> Rodrigo Asensio
> Fuel Management Services
> Gilbarco Veeder Root
> phone: +1 336 547 5023
> email: rodrigo.asensio@gilbarco.com
> <ma...@gilbarco.com>
>
>
>
> This message (including any attachments) contains confidential
> and/or proprietary information intended only for the addressee.
> Any unauthorized disclosure, copying, distribution or reliance on
> the contents of this information is strictly prohibited and may
> constitute a violation of law. If you are not the intended
> recipient, please notify the sender immediately by responding to
> this e-mail, and delete the message from your system. If you
> have any questions about this e-mail please notify the sender
> immediately.
>
--
BR,
Anjan Bacchu
Summit Information Systems