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Re: [Bug-tar] GNU tar, star and BSD tar speed comparision +script

From: Tim Kientzle
Subject: Re: [Bug-tar] GNU tar, star and BSD tar speed comparision +script
Date: Mon, 22 Oct 2007 22:22:06 -0700
User-agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.12) Gecko/20060422

Jan-Benedict Glaw wrote:
On Mon, 2007-10-22 22:34:32 +0200, Jan Psota <address@hidden> wrote:

bsdtar  list            0.05    0.02    0.02   1452160 KB/s
bsdtar  list              0.21  0.06     0.14   9960157 KB/s
bsdtar  list            0.01    0.00    0.01  20282000 KB/s
bsdtar  list              0.05  0.02     0.02  61025140 KB/s

Either BSD tar is incredible fast on tarball listing, or or took
extraorbitarily long to issue an error message...

When reading uncompressed tar archives stored in regular files,
bsdtar uses lseek() operations to skip over the bodies of
files.  Of course, when reading compressed archives or reading
from tape, it can't use this optimization.  (The code for this
was contributed by a user who regularly backs up his systems to
very slow external USB disk drives; in that situation, this
optimization makes an even bigger difference.)

Joerg Schilling wrote:
> For "bsdtar", please provide a download URL


Tim Kientzle

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