From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 09 Jan 2008 23:49:46 GMT
Subject: Re: Decompression speed: zip vs lzo
Message-ID: <7vprwaeezp.fsf@gitster.siamese.dyndns.org>
In-Reply-To: <47855765.9090001@vilain.net>

Sam Vilain <sam@vilain.net> writes:

> I think to go forward this would need a prototype and benchmark figures
> for things like "annotate" and "fsck --full" - but bear in mind it would
> be a long road to follow-up to completion, as repository compatibility
> would need to be a primary concern and this essentially would create a
> new pack type AND a new *object* type.  Not only that, but currently
> there is no header in the objects on disk which can be used to detect a
> gzip vs. an lzop stream.  Not really worth it IMHO - gzip is already
> fast enough on even the most modern processor these days.

For the compression type detection, I was hoping that we could
do something like sha1_file.c::legacy_loose_object(), but I tend
to agree it is not probably worth it.