Greetings one and all...
This is a question about an extreme speed difference between 1.4.5.1 and
1.6.8
We currently are using LyX 1.4.5.1 in production for semi-automatic pdf
booklet generation for an in-house product and while testing the newer LyX
1.6.8 on a newer system have run into a very noticeable timing difference:
Old LyX, -e pdf2: ~ 53 seconds, multiple runs, timed using /usr/bin/time -p
New LyX, -e pdf2: ~ 78 seconds, multiple runs, timed using /usr/bin/time -p
If I export to pdflatex, then run pdflatex, these are the associated
pdflatex timings:
Old pdflatex: ~ 13 seconds, multiple runs, timed using /usr/bin/time -p
New pdflatex: ~ 8 seconds, multiple runs, timed using /usr/bin/time -p
Thoughts as to why this is happening? Is there something wrong with the
stock LyX build from RedHat/Epel ?
==================
specs from "-version" for each version
==================
lyx -version
LyX 1.4.5.1 (2007/07/25)
Built on Oct 11 2007, 12:58:24
Configuration
Host type: i686-redhat-linux-gnu
Special build flags: pch jpeg-image-loader use-aspell
use-ispell
C Compiler: gcc
C Compiler LyX flags:
C Compiler flags: -I/usr/X11R6/include -O2 -g -pipe -m32
-march=i386 -mtune=pentium4
C++ Compiler: g++ (3.4.6)
C++ Compiler LyX flags: -fno-exceptions
C++ Compiler flags: -I/usr/X11R6/include -O2 -g -pipe -m32
-march=i386 -mtune=pentium4
Linker flags:
Linker user flags:
Qt Frontend:
Qt version: 3.3.3
XForms Frontend:
libXpm version: 4.11
libforms version: 1.0.90
Packaging: posix
LyX binary dir: /usr/bin
LyX files dir: /usr/share/lyx
==============
lyx -version
LyX 1.6.8 (2010-11-14)
Built on Nov 18 2010, 15:13:37
Configuration
Host type: x86_64-redhat-linux-gnu
Special build flags: use-enchant use-ispell
C Compiler: gcc
C Compiler LyX flags:
C Compiler flags: -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2
-fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic
C++ Compiler: g++ (4.1.2)
C++ Compiler LyX flags:
C++ Compiler flags: -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2
-fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic
Linker flags:
Linker user flags:
Qt 4 Frontend:
Qt 4 version: 4.2.1
Packaging: posix
LyX binary dir: /usr/bin
LyX files dir: /usr/share/lyx
==============
-Mike
