Does Cygwin have a 2GB Memory/RAM limit ?
Vince Hoffman
Vince.Hoffman@uk.circle.com
Thu Oct 30 14:26:00 GMT 2003
Although it doesnt seem to agree fully with Gerrits description, there is a
good description of what that /3Gb switch does at
http://www.sysinternals.com/ntw2k/info/bootini.shtml
It is related to memory not disk partitions, but read for yorself rather
than have me paraphrase it.
> -----Original Message-----
> From: Dan_Nazario/ACIM/americancentury@americancentury.com
> [mailto:Dan_Nazario/ACIM/americancentury@americancentury.com]
> Sent: 30 October 2003 13:25
> To: cygwin@cygwin.com
> Subject: Re: Does Cygwin have a 2GB Memory/RAM limit ?
>
>
>
>
>
>
> 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
>
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>
> "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"
>
>
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> 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
> --
> =^..^=
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