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Mark,
On 12/1/11 9:50 AM, Mark H. Wood wrote:
> On Thu, Dec 01, 2011 at 12:38:01PM +0100, Mikolaj Rydzewski wrote:
>> On the other hand, increasing java heap size is not always the
>> best option. It heavily depends on memory usage pattern in your
>>
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Mikolaj,
On 12/1/11 6:38 AM, Mikolaj Rydzewski wrote:
> On Thu, 1 Dec 2011 12:29:14 +0100, Casper Wandahl Schmidt wrote:
>
>> That didn't quite help me understand, because how can the OS map
>> from ie. 0-4GB to 4-8GB (the window is moved) when it ca
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Casper,
On 12/1/11 3:39 AM, Casper Wandahl Schmidt wrote:
> Aha so I learned something new today :) I'm still puzzled as to
> how a 32 bit CPU can compute and fetch a memory cell with address
> above 4GB since it cannot hold this large value.
OS != C
On Thu, Dec 01, 2011 at 12:38:01PM +0100, Mikolaj Rydzewski wrote:
> On the other hand, increasing java heap size is not always the best
> option. It heavily depends on memory usage pattern in your application.
> In general: the bigger heap, the longer GC will run.
I was thinking that someone
The OS has little to do with the calculation. The CPU hardware is
doing it. The processor's address logic uses registers which are
wider than 32 bits. Just as you can add a 1-digit number to a 3-digit
number and get a 3-digit result, the widget that maps a process'
virtual address space to the h
> From: André Warnier [mailto:a...@ice-sa.com]
> Subject: Re: [OT]RE: Maximum memory that can be assigned to Tomcat on windows
> platform
> > In general: the bigger heap, the longer GC will run.
Not strictly true, and hasn't been true for many years. GC time is
proportio
Mikolaj Rydzewski wrote:
On Thu, 1 Dec 2011 12:29:14 +0100, Casper Wandahl Schmidt wrote:
That didn't quite help me understand, because how can the OS map from ie.
0-4GB to 4-8GB (the window is moved) when it can only use a 32bit
register
to tell the machine where to look in the psysical memor
On Thu, 1 Dec 2011 12:29:14 +0100, Casper Wandahl Schmidt wrote:
That didn't quite help me understand, because how can the OS map from
ie.
0-4GB to 4-8GB (the window is moved) when it can only use a 32bit
register
to tell the machine where to look in the psysical memory, that is
where my
knowl
-Original Message-
From: Francis GALIEGUE [mailto:f...@one2team.com]
Sent: 1. december 2011 12:33
To: Tomcat Users List
Subject: Re: [OT]RE: Maximum memory that can be assigned to Tomcat on windows
platform
On Thu, Dec 1, 2011 at 12:29, Casper Wandahl Schmidt
wrote:
[...]
>
>
On Thu, Dec 1, 2011 at 12:29, Casper Wandahl Schmidt
wrote:
[...]
>
> That didn't quite help me understand, because how can the OS map from ie.
> 0-4GB to 4-8GB (the window is moved) when it can only use a 32bit register
> to tell the machine where to look in the psysical memory, that is where my
-Original Message-
From: Ronald Klop (Mailing List) [mailto:ronald-mailingl...@base.nl]
Sent: 1. december 2011 12:06
To: Tomcat Users List
Subject: Re: [OT]RE: Maximum memory that can be assigned to Tomcat on
windows platform
Op donderdag, 1 december 2011 09:39 schreef Casper
: Tomcat Users List
Subject: Re: Maximum memory that can be assigned to Tomcat on windows platform
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Casper,
On 11/30/11 3:37 AM, Casper Wandahl Schmidt wrote:
> Another question to ask is, why do you have 8GB memory when running
> 32bit? T
See below. I hope MS Outlook does some decent indend so my response is clear -.-
-Original Message-
From: Christopher Schultz [mailto:ch...@christopherschultz.net]
Sent: 30. november 2011 18:51
To: Tomcat Users List
Subject: Re: Maximum memory that can be assigned to Tomcat on windows
On Wed, Nov 30, 2011 at 22:38, André Warnier wrote:
[...]
>
> I am not knowledgeable at all in such questions, and while you are at it let
> me ask a question :
> Does the fact of having a system with a 64-bit CPU (and OS) necessarily (or
> usually) imply that data transfers between CPU and RAM ha
>>Does the fact of having a system with a 64-bit CPU (and OS) necessarily
(or usually) imply
>>that data transfers between CPU and RAM happen also 64-bit in parallel ?
That depends on front bus width. Modern PCs has 64-bit bus AFAIK.
In "64-bit CPU" 64 is register size and nothing else (although
Francis GALIEGUE wrote:
On Wed, Nov 30, 2011 at 18:51, Christopher Schultz
wrote:
[...]
Running a machine with more than 4GiB in 32-bit mode isn't stupid at
all IMO. If you have relatively small processes, there's no need for
the overhead of 64-bit even if you have 16GiB or more.
This is qui
Am 30.11.2011 12:08, schrieb j...@gniffelnieuws.net:
On Wed, 30 Nov 2011 16:14:45 +0530, Choudhury wrote
Hello ,
The question is not why I would use 32 bit JVM , the
question is whether there is any maximum limit on memory for Tomcat
and if yes why ? Regards,
The limit is the JVM, not
On Wed, Nov 30, 2011 at 18:51, Christopher Schultz
wrote:
[...]
>
> Running a machine with more than 4GiB in 32-bit mode isn't stupid at
> all IMO. If you have relatively small processes, there's no need for
> the overhead of 64-bit even if you have 16GiB or more.
>
This is quite the opposite: a
>> That is just stupid since 32bit cannot address more
>> than 4GB of memory no matter what you do. Any sysadmin should know
>> that right?
>That's per process. All reasonably recent 32-bit OSs can address way
>more than 4GiB internally.
Yes, but one region in memory is reserved for IO. Drivers u
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Casper,
On 11/30/11 3:37 AM, Casper Wandahl Schmidt wrote:
> Another question to ask is, why do you have 8GB memory when
> running 32bit? That is just stupid since 32bit cannot address more
> than 4GB of memory no matter what you do. Any sysadmin shou
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Subhrajyoti,
On 11/30/11 1:28 AM, choudh...@labware.com wrote:
> Is there any cap on maximum memory that can be assigned to tomcat
> on 32 bit Windows machines?
See this week's thread called "Server crash for memory limit" for some
information about
ity of the JVM.
p
> ?
> Regards,
>
> Subhrajyoti
> Mobile: +919830079545
> Mail: choudh...@labware.com
> Web: www.labware.com
>
> LabWare LIMS Solutions - Results Count
>
>
>
> From: Francis GALIEGUE
> To: Tomcat Users List
> Date: 11/30/2011 01:51 PM
>
On Wed, 30 Nov 2011 16:14:45 +0530, Choudhury wrote
> Hello ,
> The question is not why I would use 32 bit JVM , the
> question is whether there is any maximum limit on memory for Tomcat
> and if yes why ? Regards,
>
It depends on the windows version used actually. From what I remember t
On Wed, Nov 30, 2011 at 11:44, wrote:
> Hello ,
> The question is not why I would use 32 bit JVM , the question is
> whether there is any maximum limit on memory for Tomcat and if yes why ?
The question _is_ why you use a 32bit OS and JVM with 8 GB RAM. Tomcat
is not limited in memory us
: Francis GALIEGUE
To: Tomcat Users List
Date: 11/30/2011 01:51 PM
Subject:Re: Maximum memory that can be assigned to Tomcat on
windows platform
On Wed, Nov 30, 2011 at 07:28, wrote:
> Hi ,
> Is there any cap on maximum memory that can be assigned to
tomcat
&
On Wed, Nov 30, 2011 at 09:37, Casper Wandahl Schmidt
wrote:
>
[...]
>>
> Another question to ask is, why do you have 8GB memory when running 32bit?
> That is just stupid since 32bit cannot address more than 4GB of memory no
> matter what you do. Any sysadmin should know that right?
>
> disclaimer
Den 30-11-2011 09:21, Francis GALIEGUE skrev:
On Wed, Nov 30, 2011 at 07:28, wrote:
Hi ,
Is there any cap on maximum memory that can be assigned to tomcat
on 32 bit Windows machines ? I have found out that even if we have 8GB
memory in the server , can not assign more 1.4/1.5 GB to T
On Wed, Nov 30, 2011 at 07:28, wrote:
> Hi ,
> Is there any cap on maximum memory that can be assigned to tomcat
> on 32 bit Windows machines ? I have found out that even if we have 8GB
> memory in the server , can not assign more 1.4/1.5 GB to Tomcat . I also
> found this thread which re
Hi ,
Is there any cap on maximum memory that can be assigned to tomcat
on 32 bit Windows machines ? I have found out that even if we have 8GB
memory in the server , can not assign more 1.4/1.5 GB to Tomcat . I also
found this thread which reinforces what I have been seeing ? We are usi
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