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 freemanuals.texi getdate.texi header.texi tar.texi version.texi ...

Kris Kennaway kris at obsecurity.org
Sat Sep 16 12:24:40 PDT 2006


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.
> 
> 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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