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Gary,

FWIW I run dual core 64 bit opterons on 3 machines with Fedora 6 64-bit and
haven't had any memory discrepancies between my live 64 bit machines and my
dev 32 bit environment. I use the stock httpd.prefork that comes with Fedor=
a
6 with mod_perl loaded as a DSO.

Regards,

Mark.

On Nov 2, 2007 7:47 AM, Gary Sewell wrote:

> Hi,
>
>
>
> I have a couple of questions I'm hoping we can get a little help with=85
>
>
>
> Firstly, we are running a mod_perl application on 4 separate servers due
> to its bulkiness.
>
>
>
> 2 x 32-bit servers (Debian 32-bit) with 4Gb RAM each
>
> 2 x 64-bit servers (Debian 64-bit) with 8Gb RAM each
>
>
>
> We have found each apache instance is almost double on the 64-bit servers
>
>
>
> Example 64-bit
>
> USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
>
> www-data 9950 2.4 1.7 210324 141744 ? S 14:26 0:11 \_
> /usr/sbin/apache-perl
>
>
>
> Example 32-bit
>
> USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
>
> www-data 2336 0.0 2.7 117100 105908 ? S 15:14 0:16 \_
> /usr/sbin/apache-perl
>
>
>
> Is this something we just put up with or have we done something
> drastically wrong?
>
> Is it worth installing a 32-bit distribution on the 64-bit processors?
> Will the 8Gb RAM cause problems as 32-bit distributions if we did this?
>
>
>
> Apache is the standard install for each distribution with a few added
> modules.
>
>
>
> Secondly,
>
> How can I get a split/rundown of what is taking up so much memory for eac=

h
> apache instance, 100Mb is a lot, let alone 200Mb on the 64 bit servers. I=

'm
> sure we are going wrong somewhere.
>
>
>
>
>
> Many Thanks.
>
> GS
>
> Internal Virus Database is out-of-date.
> Checked by AVG Free Edition.
> Version: 7.5.503 / Virus Database: 269.15.11 - Release Date: 25/10/2007
> 00:00
>




--=20
Mark Maunder
http://markmaunder.com/
+1-206-6978723

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Gary,

FWIW I run dual core 64 bit opterons on 3 machines with Fedora=
6 64-bit and haven't had any memory discrepancies between my live 64 b=
it machines and my dev 32 bit environment. I use the stock httpd.prefork
that comes with Fedora 6 with mod_perl loaded as a DSO.

Regards, r>
Mark.

On Nov 2, 2007 7:47 AM, Gary =
Sewell <gas@gasdigital.co.uk
> wrote:
solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">















ily: Arial;" lang=3D"EN-GB">Hi,



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB">I have a couple of questions I'm hoping we can
get a little help with=85



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB">Firstly, we are running a mod_perl application =
on 4
separate servers due to its bulkiness.



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB">2 x 32-bit servers (Debian 32-bit) with 4Gb RAM=
each



ily: Arial;" lang=3D"EN-GB">2 x 64-bit servers (Debian 64-bit) with 8Gb RAM=
each



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB">We have found each apache instance is almost do=
uble
on the 64-bit servers



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB">Example 64-bit



ily: Arial;" lang=3D"EN-GB">USER       PID %C=
PU
%MEM    VSZ   RSS TTY    &nbsp=
; STAT START   TIME COMMAND



ily: Arial;" lang=3D"EN-GB">www-data  9950  2.4  1.7 210324 =
141744
?       S    14:26  
0:11  \_ /usr/sbin/apache-perl



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB">Example 32-bit



ily: Arial;" lang=3D"EN-GB">USER       PID %C=
PU
%MEM    VSZ   RSS TTY    &nbsp=
; STAT START   TIME COMMAND



ily: Arial;" lang=3D"EN-GB">www-data  2336  0.0  2.7 117100 =
105908
?       S    15:14  
0:16  \_ /usr/sbin/apache-perl



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB">Is this something we just put up with or have w=
e done
something drastically wrong?



ily: Arial;" lang=3D"EN-GB">Is it worth installing a 32-bit distribution on=
the
64-bit processors? Will the 8Gb RAM cause problems as 32-bit distributions =
if
we did this?



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB">Apache is the standard install for each distrib=
ution
with a few added modules.



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB">Secondly,



ily: Arial;" lang=3D"EN-GB">How can I get a split/rundown of what is taking=
up so
much memory for each apache instance, 100Mb is a lot, let alone 200Mb on th=
e 64
bit servers. I'm sure we are going wrong somewhere.



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB"> 



ily: Arial;" lang=3D"EN-GB">Many Thanks.



ily: Arial;" lang=3D"EN-GB">GS











Internal Virus Database is out-of-date.

Checked by AVG Free Edition.

Version: 7.5.503 / Virus Database: 269.15.11 - Release Date: 25/10/2007 00:=
00





--
Mark Maunder < f=3D"mailto:mmaunder@gmail.com">mmaunder@gmail.com>
tp://markmaunder.com/">http://markmaunder.com/
+1-206-6978723

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