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Re: [Bug-tar] [Fwd: Bug#543913: "tar tf" uses read() instead of lseek(),
Linda A. Walsh
Re: [Bug-tar] [Fwd: Bug#543913: "tar tf" uses read() instead of lseek(), making it slow]
Fri, 28 Aug 2009 15:27:17 -0700
Thunderbird 184.108.40.206 (Windows/20090605)
Tim Kientzle wrote:
Lars Stoltenow wrote:
On Thu, Aug 27, 2009 at 06:29:04PM +0300, Sergey Poznyakoff wrote:
The --seek (-n) command line option instructs tar to use lseeks instead
of reads. Use it.
Then probably GNU tar should detect automatically if a file is seekable
This was discussed about two years ago:
Yes, it was, and the final resolution, ...
Subject: Re: [Bug-tar] GNU tar, star and BSD tar speed comparision
On Tue, 2007-Oct-23, 03:32, Sergey Poznyakoff wrote:
> Tim Kientzle ha escrit:
> > Sergey Poznyakoff Tue, 23 Oct 2007 02:31:28 -0700 wrote:
> > > When reading uncompressed tar archives stored in regular
> > > files, bsdtar uses lseek() operations to skip over the
> > > bodies of files.
> As a side note, the similar feature in GNU tar is enabled using
> seek option. Is there a reason GNU tar doesn't enable this by
> default for all regular files?
I forgot to implement it :) But I'll fix that soon.
Not sure of exact circumstances, but should the user
have encountered the problem if he was using a fixed