Mailing-List: contact dev-help@pdfbox.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@pdfbox.apache.org
Date: Wed, 2 Dec 2015 18:10:11 +0000 (UTC)
From: "Sridhar (JIRA)" <jira@apache.org>
To: dev@pdfbox.apache.org
Message-ID: <JIRA.12916175.1448464435000.249150.1449079811052@Atlassian.JIRA>
In-Reply-To: <JIRA.12916175.1448464435000@Atlassian.JIRA>
References: <JIRA.12916175.1448464435000@Atlassian.JIRA>
 <JIRA.12916175.1448464435382@arcas>
Subject: [jira] [Commented] (PDFBOX-3133) PDFBox 2.0.0-RC2 and earlier 2.0.0
 SNAPSHOT Versions print performance is poor with systems having low RAM <
 3GB and lower number of fonts.
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable


    [ https://issues.apache.org/jira/browse/PDFBOX-3133?page=3Dcom.atlassia=
n.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D150=
36282#comment-15036282 ]=20

Sridhar commented on PDFBOX-3133:
---------------------------------

Hi John
Thanks for you suggestion
Tested in a 2 GB machine with 512m and 1g option for -Xmx but no gain in pe=
rformance, results below

java =E2=80=93Xmx512m -jar pdfbox-2.0.0-RC2.jar PDFToImage -imageType Jpg "=
FontTest.PDF"

Time taken for Xmx512m: 21.66,19.89,20.11
Time taken for Xmx1g: 20.26,19.77,20.17

Don't know, since there was no performance issue with 4 GB machines even wi=
th -Xmx50m ( both my machine and Tilman's machine both having 4 & 8 GBs res=
pectively) , looks like below 2GB machines have some issue, either GC or me=
mory.


> PDFBox 2.0.0-RC2 and earlier 2.0.0 SNAPSHOT Versions print performance is=
 poor with systems having low RAM < 3GB and lower number of fonts.
> -------------------------------------------------------------------------=
------------------------------------------------------------------
>
>                 Key: PDFBOX-3133
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-3133
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: PDModel
>    Affects Versions: 2.0.0
>         Environment: MS Windows Systems with low RAM < 3GB and number of =
fonts were less < 592 (or if desired fonts in PDF to be printed are not ava=
ilable in local system )=20
>            Reporter: Sridhar
>            Assignee: John Hewson
>              Labels: performance
>             Fix For: 2.0.0
>
>
> PDFBox 2.0.0-RC1, SNAPSHOTS and RC2 versions print takes 15+ seconds.
> Steps to reproduce
> --------------------------=20
> Use Windows System with < 3 GB RAM
> Use Systems with less number of fonts or without specific fonts in PDF fi=
le  to be printed.
> Printing PDF file=20
> Took 14 to 20 seconds in system with 3 GB RAM which had 522 foints
> Took 24 to 34 seconds in system with 2 GB RAM which had 90 fonts
> Took only 2.5 seconds in system with 8 GB RAM which had 1025 fonts.=20
> Doubt
> --------=20
> Not browsed the code, but following is the doubt as causing performance i=
ssue.
> Though the code caches fonts by storing fonts in local .pdfbox.cache file=
 first time and caching fonts for subsequent times.
> Not clear whether the code updates the pdfbox fonts cache file if new fon=
ts are found in new PDF file to be printed, while printing subsequent times=
.=20
> If the fonts in PDF file to be printed is not available in the .pdfbox.ca=
che file stored in local system/local system what is the behaviour?  Will t=
he code download fonts and update cache for subsequent times or is it limit=
ed by fonts available in local system?  Looks like later is the case and pe=
rformance got hit either due to RAM or not constantly updating fonts cache =
or due to un availability of fonts in local system.


--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@pdfbox.apache.org
For additional commands, e-mail: dev-help@pdfbox.apache.org