[MAPSERVER-USERS] 64 bits version of MapServer

[Frank Warmerdam]

HarryS wrote:
> Could a 64 bit version speed up rendering of large images ?
> 
> I am using Mapserver (32 Bit Windows and Linux) to export large images (e.g.
> 20.000x10.000 pixel and larger) and this takes very long. Shouldn't a 64 bit
> version have better performance when handling big datasets/files ??

Harry,

Generally speaking 64bit builds are not going to be faster for image
handling.  Most image handling comes down to byte-by-byte copies with
some computation.  Masking a byte out of 64bit memory word is no faster
than masking it out of a 32bit memory word.

What 64bit will give you is the opportunity to use huge buffers or
address huge images in memory.  This is rarely the limiting factor, but
when it is having a 64bit build is nice.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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