[Bug 1992228] Re: Fax/PDF performance regression compared to focal
Stephan Walter
1992228 at bugs.launchpad.net
Sat Oct 15 14:37:37 UTC 2022
Thanks to Sebastien and Julian for the hints. There seem to have been
some performance variation in upstream around 6.9.10...6.9.11, but never
quite as bad as the Ubuntu package.
Steps taken:
$ sudo apt-get build-dep imagemagick-6.q16
$ git clone https://github.com/ImageMagick/ImageMagick6.git
$ cd ImageMagick6
$ git checkout 6.9.11-60
$ ./configure --prefix=/usr/local/stow/ImageMagick6 --with-modules --with-gs-font-dir=/usr/share/fonts/type1/gsfonts -with-magick-plus-plus --with-djvu --with-heic --with-openjp2 --with-webp --with-wmf --without-gvc --without-dps --without-fpx --with-perl --without-rsvg --with-fftw
$ make
$ sudo make install
$ cd /usr/local/stow
$ sudo stow ImageMagick6
$ sudo ldconfig
$ cd ~
$ time /usr/local/bin/convert -version scan.pnm -compress Fax scan-upstream.pdf
Version: ImageMagick 6.9.11-60 Q16 x86_64 2021-01-24 https://imagemagick.org
Copyright: (C) 1999-2021 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Cipher DPC Modules OpenMP(4.5)
Delegates (built-in): bzlib djvu fftw fontconfig freetype heic jbig jng jp2 jpeg lcms lqr ltdl lzma openexr pangocairo png tiff webp wmf x xml zlib
real 0m10.906s
user 0m11.559s
sys 0m0.829s
This is slower than I had on Focal, I believe it was around 5 seconds
but I don't have measurements. Unstow it and I'm back at 4m44s:
$ cd /usr/local/stow
$ sudo stow -D ImageMagick6
$ sudo ldconfig
$ cd ~
$ time /usr/bin/convert -version scan.pnm -compress Fax scan-ubuntu.pdf
Version: ImageMagick 6.9.11-60 Q16 x86_64 2021-01-25 https://imagemagick.org
Copyright: (C) 1999-2021 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Cipher DPC Modules OpenMP(4.5)
Delegates (built-in): bzlib djvu fftw fontconfig freetype heic jbig jng jp2 jpeg lcms lqr ltdl lzma openexr pangocairo png tiff webp wmf x xml zlib
real 4m43.623s
user 2m6.014s
sys 2m38.471s
$ ls -la scan-*.pdf
-rw-rw-r-- 1 i i 127070 Okt 15 16:35 scan-ubuntu.pdf
-rw-rw-r-- 1 i i 127046 Okt 15 16:29 scan-upstream.pdf
Configuring the package resulted in the following:
==============================================================================
ImageMagick 6.9.11-60 is configured as follows. Please verify that this
configuration matches your expectations.
Host system type: x86_64-pc-linux-gnu
Build system type: x86_64-pc-linux-gnu
Option Value
------------------------------------------------------------------------------
Shared libraries --enable-shared=yes yes
Static libraries --enable-static=yes yes
Module support --with-modules=yes yes
GNU ld --with-gnu-ld=yes yes
Quantum depth --with-quantum-depth=16 16
High Dynamic Range Imagery
--enable-hdri=no no
Install documentation: yes
Memory allocation library:
JEMalloc --with-jemalloc=no no
TCMalloc --with-tcmalloc=no no
UMem --with-umem=no no
Delegate library configuration:
BZLIB --with-bzlib=yes yes
Autotrace --with-autotrace=no no
DJVU --with-djvu=yes yes
DPS --with-dps=no no
FFTW --with-fftw=yes yes
FLIF --with-flif=yes no
FlashPIX --with-fpx=no no
FontConfig --with-fontconfig=yes yes
FreeType --with-freetype=yes yes
Ghostscript lib --with-gslib=no no
Graphviz --with-gvc=no
HEIC --with-heic=yes yes
JBIG --with-jbig=yes yes
JPEG v1 --with-jpeg=yes yes
JPEG XL --with-jxl=yes no
LCMS --with-lcms=yes yes
LQR --with-lqr=yes yes
LTDL --with-ltdl=yes yes
LZMA --with-lzma=yes yes
Magick++ --with-magick-plus-plus=yes yes
OpenEXR --with-openexr=yes yes
OpenJP2 --with-openjp2=yes yes
PANGO --with-pango=yes yes
PERL --with-perl=yes /usr/bin/perl
PNG --with-png=yes yes
RAQM --with-raqm=yes no
RAW --with-raw=yes no
RSVG --with-rsvg=no no
TIFF --with-tiff=yes yes
WEBP --with-webp=yes yes
WMF --with-wmf=yes yes
X11 --with-x= yes
XML --with-xml=yes yes
ZLIB --with-zlib=yes yes
ZSTD --with-zstd=yes no
Delegate program configuration:
GhostPCL None pcl6 (unknown)
GhostXPS None gxps (unknown)
Ghostscript None gs (9.55.0)
Font configuration:
Apple fonts --with-apple-font-dir=default
Dejavu fonts --with-dejavu-font-dir=default none
Ghostscript fonts --with-gs-font-dir=/usr/share/fonts/type1/gsfonts /usr/share/fonts/type1/gsfonts/
URW-base35 fonts --with-urw-base35-font-dir=default /usr/share/fonts/type1/urw-base35/
Windows fonts --with-windows-font-dir=default /usr/share/fonts/truetype/msttcorefonts/
X11 configuration:
X_CFLAGS =
X_PRE_LIBS = -lSM -lICE
X_LIBS =
X_EXTRA_LIBS =
Options used to compile and link:
PREFIX = /usr/local/stow/ImageMagick6
EXEC-PREFIX = /usr/local/stow/ImageMagick6
VERSION = 6.9.11-60
CC = gcc
CFLAGS = -I/usr/include/libxml2 -I/usr/include/libpng16 -pthread -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/fribidi -I/usr/include/harfbuzz -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/uuid -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/OpenEXR -I/usr/include/lqr-1 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/openjpeg-2.4 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/uuid -I/usr/include/freetype2 -I/usr/include/libpng16 -pthread -fopenmp -Wall -g -O2 -mtune=core2 -fexceptions -pthread -DMAGICKCORE_HDRI_ENABLE=0 -DMAGICKCORE_QUANTUM_DEPTH=16
CPPFLAGS = -DMAGICKCORE_HDRI_ENABLE=0 -DMAGICKCORE_QUANTUM_DEPTH=16
PCFLAGS =
DEFS = -DHAVE_CONFIG_H
LDFLAGS =
LIBS = -llcms2 -lfreetype -llqr-1 -lglib-2.0 -lfftw3 -lxml2 -lfontconfig -lfreetype -lXext -lSM -lICE -lX11 -lXt -llzma -lbz2 -lz -lltdl -lm -lpthread
CXX = g++
CXXFLAGS = -pthread
FEATURES = DPC Cipher OpenMP Modules
DELEGATES = bzlib djvu fftw fontconfig freetype heic jbig jng jpeg lcms lqr lzma openexr openjp2 pango png ps tiff video webp wmf x xml zlib
==============================================================================
--
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Foundations Bugs, which is subscribed to imagemagick in Ubuntu.
https://bugs.launchpad.net/bugs/1992228
Title:
Fax/PDF performance regression compared to focal
Status in imagemagick package in Ubuntu:
Triaged
Status in imagemagick source package in Jammy:
Triaged
Status in imagemagick source package in Kinetic:
Triaged
Bug description:
I'm regularly using `convert` to turn a line-art PNM file to a PDF
with Fax/Group4 compression.
This used to take a few seconds on focal.
I updated to jammy and it takes almost 5 minutes now!
$ time convert -verbose scan.pnm -compress Fax scan.pdf
scan.pnm PBM 5120x7138 5120x7138+0+0 1-bit Bilevel Gray 4.35672MiB 0.610u 0:00.487
scan.pnm=> GROUP4 5120x7138 5120x7138+0+0 1-bit Gray 124981B 284.590u 4:43.594
scan.pnm=> GROUP4 5120x7138=>76x106 76x106+0+0 1-bit Gray 242B 0.150u 0:00.134
scan.pnm=>scan.pdf PBM 5120x7138 5120x7138+0+0 1-bit Bilevel Gray 127042B 285.280u 4:44.267
real 4m44.795s
user 2m5.962s
sys 2m39.970s
Input image here: https://stephan.walter.name/files/scan.pnm
I tried to reproduce the issue with upstream
https://github.com/ImageMagick/ImageMagick6 , but the PDF file
generated was just noise - I'm probably missing some `configure`
options or libraries.
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