Compose Cache in X.Org 6.8.2 RC3 RPMs for SuSE 9.2
Hi all, about the SuSE X.Org 6.8.2 RC3 RPMs and compose cache:
* SuSE specific changes since RC2: - added compose cache (details for testing will follow) [...]
The compose cache accelerates program startup times and memory
consumption considerably, especially for UTF8 locales. In order to use
the compose cache, please create a directory
$HOME/.compose-cache
, writable only by you. The next X application will create a compose
cache entry in this directory which will be used in the future. Compose
cache entries expire once a day. Changes in the compose tables are
tracked and caches invalidated automatically.
Future releases will have a global compose cache, so a .compose-cache
directory will only be needed for caching if you have your own compose
table. In the meantime, please create the directory for testing and
report all compose- and deadkey-related issues.
Thanks
Matthias
--
Matthias Hopf
On Wednesday 26 January 2005 07:19, Matthias Hopf wrote: <snip>
The compose cache accelerates program startup times and memory consumption considerably, especially for UTF8 locales. In order to use the compose cache, please create a directory
$HOME/.compose-cache <snip>
I've created the .compose-cache but I guess I'm not sure what exactly it does. Does anyone know? Which apps are currently utilizing this? I only see two small cache files (>1MB) in the folder and I don't exactly understand what's being cached. -- Jake Sallee spark@breathdedeeply.com www.breathedeeply.com My Desktop: www.breathedeeply.com/screenshot.jpg Registered Linux User #358012 http://counter.li.org
On Sunday 13 February 2005 1:27 pm, Jake Sallee wrote:
On Wednesday 26 January 2005 07:19, Matthias Hopf wrote: <snip>
The compose cache accelerates program startup times and memory consumption considerably, especially for UTF8 locales. In order to use the compose cache, please create a directory
$HOME/.compose-cache
<snip>
I've created the .compose-cache but I guess I'm not sure what exactly it does. Does anyone know? Which apps are currently utilizing this? I only see two small cache files (>1MB) in the folder and I don't exactly understand what's being cached.
I would also like to understand what exactly is being cached and how it is affecting performance. I also get warnings such as following when I start any X-based program Ignoring broken XimCache /home/oshogg/.XCompose Any idea what this means? Is .XCompose supposed to be a file or directory? what should it contain? thanks -- Osho
On Mon, Feb 14, 2005 at 06:52:08AM -0800, Osho GG wrote:
On Sunday 13 February 2005 1:27 pm, Jake Sallee wrote:
On Wednesday 26 January 2005 07:19, Matthias Hopf wrote: <snip>
The compose cache accelerates program startup times and memory consumption considerably, especially for UTF8 locales. In order to use the compose cache, please create a directory
$HOME/.compose-cache
<snip>
I've created the .compose-cache but I guess I'm not sure what exactly it does. Does anyone know? Which apps are currently utilizing this? I only see two small cache files (>1MB) in the folder and I don't exactly understand what's being cached.
I would also like to understand what exactly is being cached and how it is affecting performance.
I also get warnings such as following when I start any X-based program
Ignoring broken XimCache /home/oshogg/.XCompose
Any idea what this means? Is .XCompose supposed to be a file or directory? what should it contain?
Matthias knows the details. He is currently on LWE in Boston and will answer when he's back next week. Stefan Public Key available ------------------------------------------------------ Stefan Dirsch (Res. & Dev.) SUSE LINUX Products GmbH Tel: 0911-740 53 0 Maxfeldstraße 5 FAX: 0911-740 53 479 D-90409 Nürnberg http://www.suse.de Germany ------------------------------------------------------
On Monday 14 February 2005 6:57 am, Stefan Dirsch wrote:
On Mon, Feb 14, 2005 at 06:52:08AM -0800, Osho GG wrote:
On Sunday 13 February 2005 1:27 pm, Jake Sallee wrote:
On Wednesday 26 January 2005 07:19, Matthias Hopf wrote: <snip>
The compose cache accelerates program startup times and memory consumption considerably, especially for UTF8 locales. In order to use the compose cache, please create a directory
$HOME/.compose-cache
<snip>
I've created the .compose-cache but I guess I'm not sure what exactly it does. Does anyone know? Which apps are currently utilizing this? I only see two small cache files (>1MB) in the folder and I don't exactly understand what's being cached.
I would also like to understand what exactly is being cached and how it is affecting performance.
I also get warnings such as following when I start any X-based program
Ignoring broken XimCache /home/oshogg/.XCompose
Any idea what this means? Is .XCompose supposed to be a file or directory? what should it contain?
Matthias knows the details. He is currently on LWE in Boston and will answer when he's back next week.
Thanks, I found some useful information at http://wiki.kde.org/tiki-index.php?page=Performance%20Tips under the section Key composing (XIM)
Stefan
Public Key available ------------------------------------------------------ Stefan Dirsch (Res. & Dev.) SUSE LINUX Products GmbH Tel: 0911-740 53 0 Maxfeldstraße 5 FAX: 0911-740 53 479 D-90409 Nürnberg http://www.suse.de Germany ------------------------------------------------------
-- Osho
I've created the .compose-cache but I guess I'm not sure what exactly it does. Does anyone know? Which apps are currently utilizing this? I only see two small cache files (>1MB) in the folder and I don't exactly understand what's being cached.
libX11 now caches the compose tables. These are typically large for UTF8 locales. Compose tables are used for DeadKeys (like '`~ on European keyboard layouts) and for the Compose mechanism (most users don't even know it exists). But the tables had to be parsed for each X application on startup time.
I would also like to understand what exactly is being cached and how it is affecting performance.
Approx. 40-200ms decreased startup time for every X application, depending on your processor. Approx. 240KB saved memory per X application. These numbers are only valid for UTF8 locales. They would be much smaller for other locales or personal (small) .XCompose files.
I also get warnings such as following when I start any X-based program Ignoring broken XimCache /home/oshogg/.XCompose
Wow. That might be a bug. Can you mail me your .XCompose file and a 'ls -al ~/.compose-cache'? There should be an easy fix for that, but I'd like to know what happens here. You should be able to nuke this message by just moving all files from ~/.compose-cache to a different location (for later examination).
Any idea what this means? Is .XCompose supposed to be a file or directory? what should it contain?
That comment implies to me that you did not create this file by
intention. Hm. That's strange...
You'll find a typical compose file e.g. in
/usr/lib/X11/locale/en_US.UTF-8/Compose
Though personal compose files would be *much* smaller...
Thanks
Matthias
--
Matthias Hopf
participants (4)
-
Jake Sallee -
Matthias Hopf -
Osho GG -
Stefan Dirsch