Re: 102 megabyte dbm file?

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Autor: Tom Samplonius
Fecha:  
A: Nigel Metheringham
Cc: Dean Brooks, exim-users
Asunto: Re: 102 megabyte dbm file?

On Tue, 8 Apr 1997, Nigel Metheringham wrote:

> }    We run Exim on a few of our Solaris 2.4/2.5.1 on Sparc, and 
> } I noticed that on all of them, the file "wait-remote_smtp.pag" is
> } over 120 megabytes in size.

>
> Check its real size using "ls -s"
> dbm files are sparse - they have large blocks of all zeroes within them
> which are not even allocated by the OS (unless you have a dumb one like
> DOS). Hence the file length can look huge, but the blocks used by the
> file be quite small.
>
>     Nigel.


Sparse files are a function of the filesystem, not the os. Not all Unix
files sytems support sparse files.

> -- 
> [ Nigel.Metheringham@???   -  Systems Software Engineer ]
> [ Tel : +44 113 251 6012                   Fax : +44 113 224 0003 ]
> [            Friends don't let friends use sendmail!              ]

>
>
>
>


Tom