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

[Laurent Bourgès]

Hi,

FYI I will run profilers on this test case to compare Oracle JDK8 vs
OpenJDK11...
Will then give you my analysis.

Cheers,
Laurent

Le mer. 26 sept. 2018 à 23:51, Philip Race <philip.race at oracle.com> a
écrit :

> 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> 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.
>>
>> -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
>>
>>
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