RE: [xep-support] Severe slow down with embedded images

From: MAISONNY Benoit (Benoit.MAISONNY@eurocontrol.int)
Date: Tue Dec 02 2003 - 07:26:20 PST

  • Next message: Alexander Peshkov: "Re[2]: [xep-support] Severe slow down with embedded images"

    Hi Alexander,

    I don't do anything special regarding temp directory. Should I? I use the default xep.xml.

    All URIs are local; fo, at, pdf and images are local. Images are given by a relative path. Example:

    <fo:external-graphic scaling="uniform" height="295mm" content-height="152.4mm" content-width="101.6mm" src="url(../graphics/ENR-6-BirdMigration.svg)"/>

    Which gives in AT:

    <xep:image system-id="file:/H:/eAIP/_dev/eAIP/eAIP-pack/graphics/ENR-6-BirdMigration.svg" id="image6" type="image/svg+xml" x-from="0" y-from="4491" scale-x="0.5966168839595076" scale-y="0.5966168839595076" width="288000" height="356167">
    [127kB of encoded binary]</xep:image>

    My H: drive is a "subst" to a local C: directory.

    Some images are rescaled, and I didn't check if this issue is related to rescaling. Does rescaling happen in FO->AT or in AT->PDF? or in the PDF browser?

    I am running XEP on Win NT. A colleague of mine has the same problem on Win2k. I could test on a Linux box is that can help.

    Cheers,
    Benoit

    > -----Original Message-----
    > From: owner-xep-support@renderx.com
    > [mailto:owner-xep-support@renderx.com]On Behalf Of Alexander Peshkov
    > Sent: Tuesday, December 02, 2003 3:13 PM
    > To: MAISONNY Benoit
    > Subject: Re: [xep-support] Severe slow down with embedded images
    >
    >
    > Hello Benoit,
    >
    > Thanks for your feedback. I would like to have more information about
    > your system configuration. Temporary directory is of particular
    > interest. Does it resides on a kind of network disk?
    >
    > Best regards,
    > Alexander Peshkov
    > mailto:peshkov@renderx.com
    > RenderX
    >
    >
    > MB> Hi,
    >
    > MB> XEP 3.6.3 (and several versions before that) gets
    > extremely slow converting from XEP's area tree (AT) to PDF if
    > we activate the image embedding feature.
    >
    > MB> Using 2 versions of the same FO file containing about 16
    > images, with the only difference being the processing
    > instruction <?xep-out-embed-images true?>, I get the
    > following timings (AT to PDF):
    > MB> - without this PI: 12 seconds
    > MB> - with this PI: 3 minutes 43 seconds
    >
    > MB> FO to AT timings are only slightly slower: about 6.5
    > seconds with the PI against about 6.1 seconds without it.
    >
    > MB> This is repeatable and does not seem to be tied with the
    > image format: it happens when embedding PNG, SVG and PDF.
    >
    > MB> Is there any chance that this performance hit is
    > reduced/removed in a future XEP version?
    >
    > MB> Thanks,
    > MB> Benoit
    >
    >
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    This message and any files transmitted with it are legally privileged and intended for the sole use of the individual(s) or entity to whom they are addressed. If you are not the intended recipient, please notify the sender by reply and delete the message and any attachments from your system. Any unauthorised use or disclosure of the content of this message is strictly prohibited and may be unlawful.

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