[linux-elitists] Re: Watch Greg dance away from the question I posed. (fwd from jm@jmason.org)

Eugen Leitl eugen@leitl.org
Wed Oct 29 10:00:08 PST 2003


----- Forwarded message from Justin Mason <jm@jmason.org> -----

From: jm@jmason.org (Justin Mason)
Date: Wed, 29 Oct 2003 09:56:15 -0800
To: Lucas Gonze <lgonze@panix.com>
Cc: fork@xent.com
Subject: Re: Watch Greg dance away from the question I posed. 

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Lucas Gonze writes:
>Speaking of kill files, does anybody know why Red Hat 9 is so much 
>slower than previous versions?  I installed it on the beater box that I 
>lend out and use for emergencies and it's unusable.

A few reasons:

- - UTF-8 by default throughout the OS, including in the boot scripts; this
  means odd and/or non-optimized collation rules etc. make sure you set
  "LANG=C" instead of "LANG=en_US.utf8".

- - some horrible wchar_t patches applied to various things.  The RH9
  version of Tcl/Tk, for example, uses 4x the RAM for text areas, due to a
  patch that makes them use wchar_t instead of char.   This *massively*
  screws up most useful Tk apps, like ExMH.

- - apparently, RH9 came with block cache settings that are suboptimal.
  A thread here:
  http://lists.ximian.com/archives/public/users/2003-June/010158.html
  and elsewhere notes that this helps:

	/sbin/sysctl -w vm.bdflush="30 500 0 0 2560 15360 60 20 0"

  WFM!

My next install will run Debian ;) -- assuming Fedora doesn't sort it
all out.  The UTF-8 fiasco especially pissed me off.

PS: re http://www.w3.org/2003/10/28-906-briefing -- go W3C!

- --j.
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