From: Florian Weimer <fw@s.netic.de>
Subject: Re: Newbie question : types , representation
Date: 1999/08/27
Date: 1999-08-27T21:11:16+00:00 [thread overview]
Message-ID: <87vha1lyiz.fsf@deneb.cygnus.qad.org> (raw)
In-Reply-To: 5oAx3.5359$W5.510061@typhoon-sf.snfc21.pbi.net
tmoran@bix.com writes:
> From_Base64 : array(Base64, Base64, Base64, Base64) of Byte_Triple;
> On my P200, this sort of thing executes at a rate of about 6 Base64
> characters, or 4 Byte's, converted each microsecond. Using a
> modern fast CPU you would approach being I/O bound.
You are kidding, aren't you?
From_Base64 is an array which is at least 48 MB in size. If you're
encoding a compressed binary file, there will be a lot of cache misses,
which are terribly expensive. And by the time the array has been
initialized, other methods will already have finished the conversion.
prev parent reply other threads:[~1999-08-27 0:00 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-08-22 0:00 Newbie question : types , representation Jos De Laender
1999-08-22 0:00 ` Robert Dewar
1999-08-23 0:00 ` Wolfgang Jeltsch
1999-08-24 0:00 ` tmoran
1999-08-24 0:00 ` jdla
1999-08-24 0:00 ` Matthew Heaney
1999-08-24 0:00 ` Jos De Laender
1999-08-24 0:00 ` Brian Rogoff
1999-08-25 0:00 ` Jos De Laender
1999-08-22 0:00 ` Martin Dowie
1999-08-22 0:00 ` Wilhelm Spickermann
1999-08-23 0:00 ` Martin C. Carlisle
1999-08-23 0:00 ` Simon Wright
[not found] ` <37C621F3.C6C0DC3A@acenet.com.au>
1999-08-27 0:00 ` David C. Hoos, Sr.
1999-08-27 0:00 ` tmoran
1999-08-27 0:00 ` Florian Weimer [this message]
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