From: sandmann AT clio DOT rice DOT edu (Charles Sandmann)
Message-Id: <9709090320.AA16818@clio.rice.edu>
Subject: Re: fread slowstart
To: dj AT delorie DOT com (DJ Delorie)
Date: Mon, 8 Sep 1997 22:20:16 -0600 (CDT)
Cc: djgpp-workers AT delorie DOT com
In-Reply-To: <199709090234.WAA00084@delorie.com> from "DJ Delorie" at Sep 8, 97 10:34:22 pm
Content-Type: text
Precedence: bulk

> Currently, the amount starts at 512 and doubles after each read (i.e.
> 512, 1k, 2k, 4k, 8k, etc).  Should it quadruple instead?
> (512, 2k, 8k, 32k)  That would get to the larger transfers faster, but
> be less optimal for some programs that fseek a lot.

I would probably quadruple, or even 8X (512, 4K, 32K).

> Also, I've changed the default transfer buffer size to 32k and stack
> size to 512k in stub.asm.  

Be sure to document this as requiring additional memory to execute programs.

> Should we default to a max size (63.5K) transfer buffer now ?

I think it's excessive.  It eats into the DOS memory left for other 
programs, and I didn't see much improvement in data transfer speeds for
transfers over 32K on any system I tested.