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Date: Sat, 16 Sep 2006 15:24:37 -0400
From: Kris Kennaway <kris@obsecurity.org>
To: Tim Kientzle <kientzle@freebsd.org>
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Subject: Re: cvs commit: src/contrib/tar ABOUT-NLS AUTHORS COPYING ChangeLog
	ChangeLog.1 FREEBSD-Xlist FREEBSD-upgrade INSTALL NEWS PORTS
	README README-alpha THANKS TODO src/contrib/tar/doc fdl.texi
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On Sat, Sep 16, 2006 at 10:14:21AM -0700, Tim Kientzle wrote:
> >>>>Remove vestiges of GNU tar.
> >>>
> >>>:(
> >>>
> >>>gtar is still much faster than bsdtar...oh well.
> >>
> >>What makes gtar so much faster than bsdtar?
> >
> >I don't know, tkientzle told me once he'd try to look at it, but I
> >don't think anything came of it.
>=20
> bsdtar doesn't overlap I/O and (de)compression.
> In some cases, this makes gtar faster.

My tests were on an uncompressed tarball, so I don't think that's the
only cause.

> I still intend to experiment with async I/O and/or
> mmap to see if that addresses the difference.

Kris

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