Making GD2 faster

[no@email.supplied]

I'm using PHP with GD2 to create image thumbnails, but it gets
extremely slow when processing large images (1600x1200 or more). I
had to raise max_execution_t ime to more than 120 secs and I don't
think my client is going to like that :( I guess I could switch to
bilinear resizing but it looks really awful.

Are there any tricks to speed up GD2 a little?

Thanks in advance!

[James Smith]

Re: Making GD2 faster

I'm also interested, I found a faster CPU helped, and a little more ram,
but don't know if there is any tricks to it.



no@email.supplied wrote:
[color=blue]
>I'm using PHP with GD2 to create image thumbnails, but it gets
>extremely slow when processing large images (1600x1200 or more). I
>had to raise max_execution_t ime to more than 120 secs and I don't
>think my client is going to like that :( I guess I could switch to
>bilinear resizing but it looks really awful.
>
>Are there any tricks to speed up GD2 a little?
>
>Thanks in advance!
>
>[/color]

[Chung Leong]

Re: Making GD2 faster

<no@email.suppl ied> wrote in message
news:sk52e0dkh4 0grcasm2gtjrbsl slhtjgn9a@4ax.c om...[color=blue]
> I'm using PHP with GD2 to create image thumbnails, but it gets
> extremely slow when processing large images (1600x1200 or more). I
> had to raise max_execution_t ime to more than 120 secs and I don't
> think my client is going to like that :( I guess I could switch to
> bilinear resizing but it looks really awful.
>
> Are there any tricks to speed up GD2 a little?
>
> Thanks in advance![/color]

Try using imagecopyresize () instead of imagecopyresamp led().

[mikele]

Re: Making GD2 faster

On Tue, 29 Jun 2004 19:57:34 -0400, "Chung Leong"
<chernyshevsky@ hotmail.com> wrote:
[color=blue]
><no@email.supp lied> wrote in message
>news:sk52e0dkh 40grcasm2gtjrbs lslhtjgn9a@4ax. com...[color=green]
>> I'm using PHP with GD2 to create image thumbnails, but it gets
>> extremely slow when processing large images (1600x1200 or more). I
>> had to raise max_execution_t ime to more than 120 secs and I don't
>> think my client is going to like that :( I guess I could switch to
>> bilinear resizing but it looks really awful.
>>
>> Are there any tricks to speed up GD2 a little?
>>
>> Thanks in advance![/color]
>
>Try using imagecopyresize () instead of imagecopyresamp led().
>[/color]

Yeap, that's what I meant about bicubic/bilinear resize. I'm using
bilinear now (imagecopyresiz ed()) but of course quality is poor. I
guess that the GD2 libraries are not optimized at all cause Photoshop
or even Irfanview, Acdsee, etc. are a lot faster at bicubic resizing.

[Andy Hassall]

Re: Making GD2 faster

On Tue, 29 Jun 2004 07:19:42 GMT, no@email.supplied wrote:
[color=blue]
>I'm using PHP with GD2 to create image thumbnails, but it gets
>extremely slow when processing large images (1600x1200 or more). I
>had to raise max_execution_t ime to more than 120 secs and I don't
>think my client is going to like that :( I guess I could switch to
>bilinear resizing but it looks really awful.
>
>Are there any tricks to speed up GD2 a little?[/color]

Consider using imagemagick instead. It's considerably faster for generating
thumbnails.

See Michael Rostkowski's informative speed comparison post:

http://groups.google.co.uk/groups?selm=mgx6c.615%24Fo4.4744%40typhoon.sonic.net

--
Andy Hassall <andy@andyh.co. uk> / Space: disk usage analysis tool
http://www.andyh.co.uk / http://www.andyhsoftware.co.uk/space