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Author Topic: slow boot, xorg-intel questions...  (Read 6378 times)

Offline nitram

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slow boot, xorg-intel questions...
« on: January 26, 2016, 08:14:28 PM »
Troubleshooting slow boot, process of elimination it's related to xorg-intel. Don't think it's an xorg-intel issue as system runs fine, just that it's large (65mb) and takes time to process. Tried installing xserver-xorg-video-intel from Debian, smaller (51mb) but failed to boot graphics. Looks like the xorg-* SCEs are custom for dCore. Questions, thanks:

- Should Debian drivers like xserver-xorg-video-* be flagged as blocked?

- sce-searchprebuilt doesn't list the xorg-* related dCore drivers, should these be listed?

Offline nitram

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Re: slow boot, xorg-intel questions...
« Reply #1 on: January 27, 2016, 02:12:20 AM »
Slow boot xorg-intel related. The original SCE is a 65mb whopper. Re-importing with Xprogs and graphics-3.16.6-tinycore dependencies still 64mb, so really no benefit. Unsquashed xorg-intel.sce, got delete happy, resquashed to only 30mb, reduced boot time by ~25 seconds! Really not practical as an automated update will re-build the extension. The diff exceeds the character limit so won't bother.

Granted some users may need some of this, noteable deletions include:
/lib/systemd/
/usr/include/
/usr/lib/gcc/
/usr/lib/i386-linux-gnu/gconv/
/usr/lib/i386-linux-gnu/perl/5.20/
/usr/lib/python2.7/
/usr/lib/python3/
/lib/xorg/modules/multimedia/
/usr/share/X11/locale/
/usr/share/bug/
/usr/share/doc-base/
/usr/share/dpkg/
/usr/share/gcc-4.9/
/usr/share/locale/
/usr/share/perl/5.20/
/usr/share/zoneinfo/


The largest culprits were :(
15mb   /usr/lib/gcc/
5mb   /usr/lib/i386-linux-gnu/gconv/
18mb   /usr/share/locale/
31mb   /usr/lib/i386-linux-gnu/libLLVM-3.5.so.1


Relatively new to dCore so don't fully understand how the SCEs work:
- not sure why gcc is included
- thought locale was not included by default
- system runs fine without the 31mb libLLVM-3.5.so.1.
  (Modular compiler and toolchain technologies, whatever that is)


Has anyone developed a script to *strip* extensions during or after import? Might be fruitful to incorporate something like this in the import script but i have much to learn. Will probably dissect more extensions for comparison. Thanks.

Offline sm8ps

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Re: slow boot, xorg-intel questions...
« Reply #2 on: January 27, 2016, 03:09:00 AM »
For comparison, on dCore-trusty 'xorg-intel.sce' comes at a respectable 40 mB without being based on any other extension.

Maybe you want to include gcc and others in a base extension that most other extension depend upon?

Offline nitram

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Re: slow boot, xorg-intel questions...
« Reply #3 on: January 27, 2016, 10:39:58 AM »
Thanks for the feedback, i've only used dCore-jessie. 65mb -> 40mb is quite the difference. IMO every mb counts, difference between snappy boot and 'what's wrong with my system' or 'why is dCore slow'? Especially if the bloat adds no functionality. Could i get a rebuild of xorg-intel for dCore-jessie please? Makes a big difference in boot time, especially during testing, and would benefit others.

Been playing with other extensions, some are fairly lean and some not. Another good example is bsdgames-nonfree.sce. Original size 4.8mb, cursory optimization 1.69mb, huge difference. Game plays fine, just got rid of what appears to be bloat, diff:
Code: [Select]
--- bsdgames-nonfree.orig.list
+++ bsdgames-nonfree.trimmed.list
@@ -1,5 +1,5 @@
 Parallel unsquashfs: Using 1 processor
-385 inodes (2642 blocks) to write
+121 inodes (980 blocks) to write
 
 squashfs-root
 squashfs-root/cfg
@@ -128,275 +128,6 @@
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 squashfs-root/usr/games/rogue
 squashfs-root/usr/lib
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-squashfs-root/usr/lib/i386-linux-gnu/gconv/RK1048.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/SAMI-WS2.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/SHIFT_JISX0213.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/SJIS.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/T.61.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/TCVN5712-1.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/TIS-620.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/TSCII.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/UHC.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/UNICODE.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/UTF-16.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/UTF-32.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/UTF-7.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/VISCII.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/gconv-modules
-squashfs-root/usr/lib/i386-linux-gnu/gconv/gconv-modules.cache
-squashfs-root/usr/lib/i386-linux-gnu/gconv/libCNS.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/libGB.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/libISOIR165.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/libJIS.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/libJISX0213.so
-squashfs-root/usr/lib/i386-linux-gnu/gconv/libKSC.so
-squashfs-root/usr/lib/i386-linux-gnu/libform.so.5
-squashfs-root/usr/lib/i386-linux-gnu/libform.so.5.9
-squashfs-root/usr/lib/i386-linux-gnu/libmenu.so.5
-squashfs-root/usr/lib/i386-linux-gnu/libmenu.so.5.9
-squashfs-root/usr/lib/i386-linux-gnu/libpanel.so.5
-squashfs-root/usr/lib/i386-linux-gnu/libpanel.so.5.9
-squashfs-root/usr/lib/i386-linux-gnu/libtic.so.5
-squashfs-root/usr/lib/i386-linux-gnu/libtic.so.5.9
 squashfs-root/usr/local
 squashfs-root/usr/local/postinst
 squashfs-root/usr/local/postinst/bsdgames-nonfree


Think there may be something to adding an optimize option to sce-import that would remove certain directories or large files before squashing, like locale/,  gcc/ , likely i386-linux-gnu/  ... Maybe ask user if they want to remove any file flagged at >1-2 mb. Of course include warning may break extension, if so re-import without optimization option.

Offline Jason W

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Re: slow boot, xorg-intel questions...
« Reply #4 on: January 27, 2016, 04:55:56 PM »
Here are two thoughts.  One is if you make a custom sce, remove the files in /usr/local/sce/xorg-intel if the sce is xorg-intel, and then the custom extension will not be updated with sce-update.

Second, is we can have a "nolocale" type of option, the locales in my main 1.8GB sce weighs in at 118M, so getting near 10% space savings. 

The xorg-* pacakges are meta collections of Debian package dependencies and not prebuilt, they just make it easy for new users to install a working xorg for their hardware.  xorg-all is the meta package to install all drivers so one does not have to worry about what hardware they have.

Offline nitram

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Re: slow boot, xorg-intel questions...
« Reply #5 on: January 27, 2016, 05:50:47 PM »
For own use will opt to go with a custom SCE, as it's much leaner than simply removing /locale. Keeping xorg small made such a huge improvement in boot time. But in general i believe removing locale should be default behaviour, similar to how Tiny Core encourages splitting out /locale/ information. Anything to help keep the SCEs smaller. Maybe a KEEPLOCALE=FALSE default entry in sceconfig.

Still think it would be nice for other directories to be stripped by default, like /usr/lib/gcc/,  /usr/lib/i386-linux-gnu/,  /usr/share/dpkg/,  /lib/systemd/,  /usr/include/. For the most part, i would think there is minimal risk of breakage by removing some select known-not-to-be-required directories. Any thoughts on this or do you think it gets to complicated or problematic?

Offline Jason W

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Re: slow boot, xorg-intel questions...
« Reply #6 on: January 27, 2016, 06:13:04 PM »
/usr/include, and /usr/lib/gcc I can see, the do save some MB in my large desktop sce.  But /usr/lib/i386-linux-gnu contains a lot of libs and directories of other files that packages use.   /usr/share/dpkg is only 12k of uncompressed files in my large 1.8G compressed sce.

I am open to letting us look into what can be left out by default for the average user.  The libLLV* one is large and I can't find anything in my huge sce that needs it according to ldd. 

Offline nitram

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Re: slow boot, xorg-intel questions...
« Reply #7 on: January 28, 2016, 12:00:25 AM »
Thanks for considering. Puppy Linux has a decent 'trim the fat' system (~2/3 way down): http://barryk.org/woof/ppm.htm. User can choose to trim, select locale(s) (instead of all or nothing), remove documentation files and remove development files. Don't think it needs to be this complicated, although the option to select locale(s) is really nice.

Agree removing /usr/include and /usr/lib/gcc would likely yield best results, plus removing the large libLLV* for xorg. Reviewed dCore-jessie file system and came up with a potential blocklist, although some items may provide almost no benefit. And i think default is already not to include /man and /doc stuff. Your large SCE would provide the best analysis of space saved.

/etc/apt/
/etc/cron.daily/
/etc/dpkg/
/etc/logrotate.d/
/etc/rc*.d/
/lib/systemd/
/usr/include/
/usr/lib/debug/
/usr/lib/gcc/
/usr/lib/i386-linux-gnu/libLLVM-3.5.so.1
/usr/share/X11/locale/
/usr/share/bug/
/usr/share/doc/
/usr/share/doc-base/
/usr/share/dpkg/
/usr/share/gcc-4.9/
/usr/share/locale/
/usr/share/man/

Offline nitram

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Re: slow boot, xorg-intel questions...
« Reply #8 on: January 28, 2016, 12:15:02 AM »
Quick test, took stock xorg-intel and removed /usr/include, /usr/lib/gcc, /usr/share/locale and /usr/lib/i386-linux-gnu/libLLVM-3.5.so.1. From 65mb down to 37mb with minimal effort and risk of breakage.

Offline curaga

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Re: slow boot, xorg-intel questions...
« Reply #9 on: January 28, 2016, 03:01:20 AM »
FWIW, my LFS system has the env var LINGUAS set to fi. This means any autotools-using package will only install that locale.

As it's standard behavior there, it would make sense to have a "keep only these locales" function.
The only barriers that can stop you are the ones you create yourself.

Offline netnomad

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Re: slow boot, xorg-intel questions...
« Reply #10 on: January 29, 2016, 05:50:11 AM »
hi curaga,

LINGUAS is used by gentoo, too.
https://wiki.gentoo.org/wiki/Localization/Guide#LINGUAS

do you see there a way to use this concept or something like localepurge in dcore?
https://packages.debian.org/jessie/localepurge

thank you for your ideas and help.
« Last Edit: January 29, 2016, 05:53:48 AM by netnomad »

Offline Jason W

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Re: slow boot, xorg-intel questions...
« Reply #11 on: January 29, 2016, 07:52:38 PM »
I have about a 3 or 4 line of code concept that can be part of sce-import to allow only keeping desired locales.  Can keep 1, 10, or whatever, just list them in a config file and if found it will be used.   I will make it and test it tomorrow.

As for excluding libraries and directories, that also can be done with a config file, if one wants to enter the unwanted large files or unneeded dirs then have at it, place it in the config file and it will be done.  Those lists can then be tested and shared among users, I would much rather that than to try to add in a hard coded list of files and dirs in base or even on the server to be fetched to be constantly revised- except for the current default of deleting /usr/share/doc and /usr/share/man.  So most documentation files are already trimmed, and development files are included in the -dev packages which are not installed by default.

I will try to put in place both tomorrow, I think it will be liked.

Offline nitram

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Re: slow boot, xorg-intel questions...
« Reply #12 on: January 30, 2016, 12:53:49 AM »
Thanks for making changes, didn't want to mess up the announcement thread.

Code: [Select]
You are running dCore-jessie:2016.01.30.02.04, the latest release candidate.

Only have a 'language' file, not 'locale.nopurge'. Also the file contains only 'LANG=C' without instructions. How would a user add additional languages (comma seperate, space, new line)? You mentioned somewhere 1-10 languages, was this literal? Could user choose to install all with a wildcard? LANG=C good for me, just trying to help get this figured out for other language users.

Also don't have an sce.purge file, so can't test proper, thanks.

PS - just tested new sce-remove and sce-update menus, much improved appearance and behaviour, no more confusion. Only thing is this line in sce-remove still needs to be changed to Enter: Choose SCE(s) to update check, can choose more than one, quit to proceed.


Offline Jason W

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Re: slow boot, xorg-intel questions...
« Reply #13 on: January 30, 2016, 06:53:46 AM »
/etc/sysconfig/language is created by the boot code LANG=, it is not to be manually edited.

I meant adding 1 to 10 or more entries to /etc/sysconfig/locale.nopurge to keep, as in directories under /usr/share/locale that are not deleted by the tool.

I will be making an adjustment to sce-load and will include /etc/sysconfig/locale.nopurge.example and /etc/sysconfig/sce.purge so folks can see the format of the entries.  But they can be created by the user and will be recognized by sce-import.

Ok, will fix the sce-remove thing.
« Last Edit: January 30, 2016, 07:00:15 AM by Jason W »

Offline nitram

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Re: slow boot, xorg-intel questions...
« Reply #14 on: January 30, 2016, 01:17:34 PM »
Running latest RC, tested local.nopurge and sce.purge, everything appears to work very well, even wildcards. It's amazing actually! Some of the changes you've implemented in the last few weeks Jason really bring dCore to a whole new level.

Just the simplest nano example using new language and purge system, nano still functions fine upon preliminary testing:

7.43 mb: nano default
5.43 mb: italian only
5.36 mb: no locales
1.86 mb: using sce.purge below

Only 25% original size without even pairing dependencies or using a list file :)

sce.purge used:
Code: [Select]
etc/alternatives
etc/cron.daily
etc/dpkg
etc/ld.so.conf.d
etc/logrotate.d
usr/bin/dpkg*
usr/bin/update-alternatives
usr/lib/gcc
usr/lib/i386-linux-gnu/libLLVM*
usr/lib/i386-linux-gnu/audit
usr/lib/i386-linux-gnu/gconv
usr/sbin/dpkg*
usr/sbin/update-alternatives
usr/share/doc-base
usr/share/dpkg
usr/share/info
usr/share/locale

Plan to add more sce.purge items that arise and will review my old list above. Thanks again.