This is quite simply untrue. When running a native
program like LilyPond the operating system plays
a minimal part in the execution time. It is true that
the various extra facilities to do with display eye
candy, security, etc in the later Windows OS's take
more cpu power, but performance is more often related
to disk speed than cpu. LilyPond doesn't use these,
though.
Trevor
----- Original Message -----
From: "Hajo Dezelski" <[EMAIL PROTECTED]>
To: "Trevor Daniels" <[EMAIL PROTECTED]>
Cc: "Mats Bengtsson" <[EMAIL PROTECTED]>; "Tim Slattery"
<[EMAIL PROTECTED]>; <lilypond-user@gnu.org>
Sent: Thursday, November 13, 2008 1:48 PM
Subject: Re: LilyPond is excessively slow on Windows Vista
Trevor,
I wouldnt look in the first place at problems of Lilypond. I presume that
it
is a problem of Vista which has too many processes running in the
background. You will find, that nearly all programs run slower on this OS.
And even when you only need 10 seconds it is too much compared to what the
processor could manage. You have a machine with much more horsepower under
the hood compared to the "old" systems. And this system performance should
not be consumed by the OS.
Of course a normal user working only with Vista will not notice the
difference. If you have the possibilty to install XP on your laptop I am
sure that you will be astonished what you computer will be able to
perform.
We have tried that with different programs on different machines and
nearly
always had success.
Hajo
2008/11/13 Trevor Daniels <[EMAIL PROTECTED]>
Mats, when I first obtained my laptop, c. March 08, I did a LilyPond
installation with the then current 2.11 version on a clean system. So
there
were no lilypond font caches present. The performance was fine then and
has
been fine ever since. soon after, I tried various ways to cause the
performance to degrade in an attempt to isolate the problem being
experienced by others, but nothing I did had any effect - the performance
always has been and still is good.
In an attempt to isolate the problem again, I have just created a
.fontconfig directory(empty, as I don't know what it should contain),
downloaded 2.11.63 and reinstalled it. But it still compiles a 3-page
file
in just under 10 sec, (15 sec on first run). If I could ever get my
system
to run slowly we would have the answer, but now I'm out of ideas.
Trevor
Mats Bengtsson wrote Thursday, November 13, 2008 11:44 AM
Trevor, perhaps it's the other way around, that you don't suffer from
the
problems,
since you already have a working cache file. Have you tried removing all
your
cache files (of course, keeping a back-up in a safe place) and trying
the
latest
installation?
/Mats
Trevor Daniels wrote:
Jonathan
The slowness is certainly not inherently due to Vista
as LilyPond has always run fine under Vista here. The
slowness issue was discussed at some length back in
March 08 on both -user and -bug when it was determined
that it was due to font building. This is almost certainly
is cause of the recently reported slowness. Incidentally,
a similar issue made LilyPond slow under XP too, and this
was fixed with the 2.11.43 release.
I don't understand the technical issues, but on Vista
the fonts are contained in ~\.lilypond-fonts.cache-2.
(To see these make sure you have the options set in
Windows Explorer to Show hidden file and folders.)
This should contain a number of smaller files (>=2)
and one large file, c. 800Kb on my system. Check the
date/time the large file was last modified. It should
only be changed infrequently (I don't know what triggers
it.) If it changes on every LP run, then this is the cause
of the slowness. Two of the smaller files should be rebuilt
on the first run after a new install, which causes the
this first run to take more time, around 20 secs more,
than subsequent runs.
So what might cause this incorrect font cache rebuild?
In the past, one cause was an incorrect version of
libfontconfig-1.dll but this is unlikely now as the
appropriate version of this dll is included with
every binary. Another possibility is that when this dll
searches for the font cache it checks for an old cache
first. The fonts used to be cached in ~\.fontconfig.
If such a directory is present it might be worth trying
deleting it or moving it to another directory.
Trevor
----- Original Message ----- From: "Jonathan Kulp" <
[EMAIL PROTECTED]>
To: "Tim Slattery" <[EMAIL PROTECTED]>
Cc: <lilypond-user@gnu.org>
Sent: Wednesday, November 12, 2008 5:47 PM
Subject: Re: LilyPond is excessively slow on Windows Vista
Tim Slattery wrote:
Carl Sorensen <[EMAIL PROTECTED]> wrote:
545 Defect Verified Medium ---- v.villenave LilyPond is
excessively
slow on Windows Vista Performance fixed_2_11_43
Rob,
Have you checked that it's slow the _second_ time you run a file?
It
will be slow the first time it runs because it needs to build a font
cache,
but successive times should not be slow.
On my Vista system, when I invoke Lilypond I get the GNU version
notice, and then.....
it sits for almost 50 seconds, apparently doing NOTHING. Then it
wakes
up and processes the file. It's still usable, but it sure slows
things
down.
For the sake of testing, I booted into my Vista Home Premium partition
and installed the latest Lilypond binary from the download page. I
ran a
lilypond file once and it took about 90 seconds, then ran it a second
time
and it took more than 60 seconds. The same file on Linux compiles in
less
than 2 seconds. Honestly I don't know how anyone uses Vista as their
main
OS. This is a reasonably powerful laptop less than 6 months old with
2GB of
RAM and a dual-core processor. I have all the aero eye candy disabled
and
it still runs 10x slower than the 8-year-old Gateway box in my office
running Ubuntu 8.04. Man. Glad to be back on the Linux side :)
Jon
--
Jonathan Kulp
http://www.jonathankulp.com
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--
=============================================
Mats Bengtsson
Signal Processing
School of Electrical Engineering
Royal Institute of Technology (KTH)
SE-100 44 STOCKHOLM
Sweden
Phone: (+46) 8 790 8463 Fax: (+46) 8 790 7260
Email: [EMAIL PROTECTED]
WWW: http://www.s3.kth.se/~mabe <http://www.s3.kth.se/%7Emabe>
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