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From: Rusty Russell <rusty@rustcorp.com.au>
To: ultraptr@pacbell.net
Cc: Ian Pratt <Ian.Pratt@cl.cam.ac.uk>,
	Xen Mailing List <xen-devel@lists.sourceforge.net>
Subject: Re: [PATCH 3/3] Replace slab.c with a very simpleallocator.
Date: Fri, 04 Feb 2005 14:26:41 +1100	[thread overview]
Message-ID: <1107487601.28908.14.camel@localhost.localdomain> (raw)
In-Reply-To: <20050203194406.GB18587@dront>

On Thu, 2005-02-03 at 11:44 -0800, ultraptr@pacbell.net wrote:
> I wonder what are reasons for this replacement. From outside it looks like
> proven and fast slab allocator is being replaced with slow and new one just
> for sake of size and beauty of source codes?

Yes, that's approximately correct.  Slow, of course, is arguable: it is
possible that the old code was slower, given the setup time and how
infrequently allocations are actually used.  The point here is that it
is quite possible that someone may want to make modifications to the
allocator which will be far simpler on the new code than the old.

In the finest book ever written on computer programming, Kernighan and
Plauger wrote "Don't patch bad code -- rewrite it".  I agree.

Rusty.
-- 
A bad analogy is like a leaky screwdriver -- Richard Braakman



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  parent reply	other threads:[~2005-02-04  3:26 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-02-03  8:43 [PATCH 3/3] Replace slab.c with a very simpleallocator Ian Pratt
2005-02-03 19:44 ` ultraptr
2005-02-04  2:11   ` David Hopwood
2005-02-04  3:26   ` Rusty Russell [this message]
  -- strict thread matches above, loose matches on Subject: below --
2005-02-03 22:22 Ian Pratt

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