[OpenJDK 2D-Dev] Rendering images from PDF files slower in OpenJDK

[Philip Race]

Interesting and I assume that it was somewhat less in JD8u ?
Off the top of my head that is one thing that didn't change in any big 
way since JDK 8u.

Perhaps something has changed so that it is now [considered] needed 
whereas before
it was not? So did it go from zero percent to 29% or from 10% to 29% ?

But even that doesn't on it own account for everything.
29% of 8 seconds would be about 2.5 seconds and doesn't explain going from
< 3 seconds to 8 seconds .. we are still missing at least 2.5 seconds ..


-phil.

On 9/26/18, 11:08 AM, Daniel Persson wrote:
> Hi Phil
>
> What the PDFBox team told me it could have something to do with color 
> mapping.
>
> And my quick profiling shows that the code spends 29% of the time 
> inside of java.awt.image.ColorConvertOp.filter on java 11
>
> But I'll open a issue.
>
> Best regards
> Daniel
>
> On Wed, Sep 26, 2018, 19:33 Phil Race <philip.race at oracle.com 
> <mailto:philip.race at oracle.com>> wrote:
>
>     Multiple pieces are changing across these releases.
>
>     Is it the JPEG writing ? Is it freetype vs t2k (font performance)
>     is it harfbuzz vs icu (text layout), is it marlin vs ductus
>     (rasterization) ?
>
>     So it is very hard to say with any certainty what the cause of the
>     difference is .. or
>     why 10 got so much better than 9  .. even if still not back to JDK 8.
>
>     Please file a bug at java.com <http://java.com>.
>
>     -phil.
>
>     On 09/25/2018 10:42 PM, Daniel Persson wrote:
>     > Hi everyone,
>     >
>     > We render a lot of images with PDFBox with Java 1.8.0 and we
>     want to
>     > upgrade to the current OpenJDK 11 but sadly we see some performance
>     > degradation switching over to OpenJDK. Anyone have a suggestion to
>     > remedy this issue, or can explain why it is slower?
>     >
>     > Using the PDFBox app current release downloadable from
>     > http://www-us.apache.org/dist/pdfbox/2.0.11/pdfbox-app-2.0.11.jar
>     >
>     > Running the command
>     > java -jar pdfbox-app-2.0.11.jar PDFToImage -time test.pdf
>     >
>     > We see the following result
>     >
>     > ---------------------------------------------------------
>     > java version "1.8.0_181"
>     > Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
>     > Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
>     > Rendered 1 page in 2762ms
>     > ---------------------------------------------------------
>     > openjdk version "9.0.4"
>     > OpenJDK Runtime Environment (build 9.0.4+11)
>     > OpenJDK 64-Bit Server VM (build 9.0.4+11, mixed mode)
>     > Rendered 1 page in 8034ms
>     > ---------------------------------------------------------
>     > openjdk version "10.0.2" 2018-07-17
>     > OpenJDK Runtime Environment 18.3 (build 10.0.2+13)
>     > OpenJDK 64-Bit Server VM 18.3 (build 10.0.2+13, mixed mode)
>     > Rendered 1 page in 4255ms
>     > ---------------------------------------------------------
>     > openjdk version "11" 2018-09-25
>     > OpenJDK Runtime Environment 18.9 (build 11+28)
>     > OpenJDK 64-Bit Server VM 18.9 (build 11+28, mixed mode)
>     > Rendered 1 page in 4275ms
>     > ---------------------------------------------------------
>     > openjdk version "12-ea" 2019-03-19
>     > OpenJDK Runtime Environment 19.3 (build 12-ea+11)
>     > OpenJDK 64-Bit Server VM 19.3 (build 12-ea+11, mixed mode)
>     > Rendered 1 page in 4399ms
>     >
>     > The pdf file used in this example can be downloaded from
>     >
>     https://drive.google.com/file/d/139wP6PDmmQ6KBTyeJTETIrplSuOUgFfG/view?usp=sharing
>     >
>     > Best regards
>     > Daniel
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openjdk.java.net/pipermail/2d-dev/attachments/20180926/8f42da3d/attachment.html>