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

Mon Oct 1 17:52:36 UTC 2018

Hi,
I quickly run your test with Oracle JDK8 and OpenJDK 11:
Here are the CPU profiles:
http://cr.openjdk.java.net/~lbourges/pdfbox_profiles/

On JDK8:
java version "1.8.0_192-ea"
Java(TM) SE Runtime Environment (build 1.8.0_192-ea-b04)
Java HotSpot(TM) 64-Bit Server VM (build 25.192-b04, mixed mode)
Rendered 1 page in 3375ms

 777 ms org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.
getRGBImage
  17.8% - 766 ms
org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.from8bit
  12.6% - 541 ms
org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.createInputStream
  12.6% - 541 ms org.apache.pdfbox.pdmodel.common.PDStream.createInputStream

On JDK11:

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 4789ms

2,059 ms org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.
getRGBImage
  36.0% - 2,054 ms
org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.from8bit
  26.2% - 1,495 ms
org.apache.pdfbox.pdmodel.graphics.color.PDDeviceCMYK.toRGBImage
  26.2% - 1,495 ms
org.apache.pdfbox.pdmodel.graphics.color.PDDeviceCMYK.toRGBImageAWT
  26.2% - 1,495 ms
org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace.toRGBImageAWT
  26.0% - 1,481 ms java.awt.image.ColorConvertOp.filter

Actually, pdfbox's SampledImageReader.from8bit() do not use the same
path between JDK8 and JDK11... and ColorConvertOp costs 25% (in my
case)

Cheers,
Laurent

Le jeu. 27 sept. 2018 à 09:19, Laurent Bourgès <bourges.laurent at gmail.com>
a écrit :

> 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
>>>
>>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openjdk.java.net/pipermail/2d-dev/attachments/20181001/f0f95fa7/attachment-0001.html>