Re: image-size

[Eli Zaretskii]

> From: Lars Magne Ingebrigtsen <address@hidden>
> Cc: address@hidden
> Date: Thu, 20 Jun 2013 21:18:33 +0200
> 
> Eli Zaretskii <address@hidden> writes:
> 
> > djpeg is not Emacs.  I just stepped through jpeg_load_body, and this
> > line takes about 1.5 sec for a 3 MB JPEG image:
> 
> Yeah, but my image isn't that big:
> 
> address@hidden /tmp]$ ls -lh /tmp/0.jpg 
> -rw-r--r-- 1 larsi larsi 220K Jun 20 18:52 /tmp/0.jpg
> 
> >   fn_jpeg_start_decompress (&mgr->cinfo);
> 
> And it uses imagemagick, not that function.  :-)

So we are comparing apples with oranges.  And if there's any network
effect, it is within imagemagick in your case, right?  Maybe
imagemagick does involve X, I have no idea about its internals.

> I was hoping that someone who knows something about Emacs and images
> under X would pipe up so that I won't have to.  :-)

I do know about that.  I told you what I know and see: Emacs does not
invoke any display related code inside image-size, but you don't
believe me for some reason.