Re: Does Cygwin have a 2GB Memory/RAM limit ?

[Dan_Nazario/ACIM/americancentury at americancentury dot com]

Gerrit - thanks for your reply.

In looking at the boot.ini snip, it looks like it is related to the size of
disk partitions being greater than 2GB.

I'm referring to a limit on the RAM/Memory that cygwin appears to impose.
My server has 8GB of RAM, but cygwin sees only 2GB of it according to
vmstat and top commands running in the cygwin bash shell.


Dan Nazario





                                                                                                                                  
                                                                                                                                  
                        "Gerrit P.                                                                                                
                        Haase"                 To:       "Dan_Nazario/ACIM/americancentury@americancentury.com"                   
                        <freeweb@nyckel         <dan_nazario@americancentury.com>                                                 
                        piga.de>               cc:       cygwin@cygwin.com                                                        
                                               Subject:  Re: Does Cygwin have a 2GB Memory/RAM limit ?                            
                        Sent by:                                                                                                  
                        cygwin-owner@cy                                                                                           
                        gwin.com                                                                                                  
                                                                                                                                  
                                                                                                                                  
                        10/30/2003                                                                                                
                        06:10 AM                                                                                                  
                        Please respond                                                                                            
                        to "Gerrit P.                                                                                             
                        Haase"                                                                                                    
                                                                                                                                  
                                                                                                                                  
                                                                                                                                  
                                                                                                                                  
                                                                                                                                  




Dan wrote:


> Can anyone else confirm this - that memory above 2GB is not visible to
> cygwin.  Any known work-arounds?

There is a Windows limitation, no application may allocate more then 2GB
unless you specify the right value (e.g. /3GB) in the boot.ini file.

boot.ini example:

[Boot Loader]
Timeout=7
Default=scsi(0)disk(0)rdisk(0)partition(1)\WINNT
[Operating Systems]
scsi(0)disk(0)rdisk(0)partition(1)\WINNT="Windows 2K Server" /3GB
scsi(0)disk(0)rdisk(0)partition(1)\WINNT="Windows 2K Server [VGA-Modus]"
/basevideo /sos


Gerrit
--
=^..^=                                     http://nyckelpiga.de/donate.html


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/





--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/