2010/1/21 Michael Schuster <Michael.Schuster at sun.com>: > Ben Taylor wrote: >> >> On Thu, Jan 21, 2010 at 7:28 AM, Michael Schuster >> <Michael.Schuster at sun.com> wrote: >>> >>> Ben Taylor wrote: >>> >>>>> 3a. using 'tar xzf pkg.tar.gz' is about 30% faster than 'gunzip >>>>> pkg.tar.gz && tar xf pkg.tar'. Changing this would benefit everyone. >>>> >>>> you've tested this? There's probably no harm in doing this, though >>>> we have to handle this differently for bz2 version. (Though adding >>>> bzip2 support to gtar if it isn't already there would not be difficult. >>>> I added it to compress years ago to support bzip2 flar archives >>>> since changing the lib stuff for flar installs was much too complicated) >>> >>> how about "<uncompression tool> -c pkg.tar.<suffix> | tar xf > pkg" or >>> something like that? how does that compare to the other two variants? if >>> favourable, one could use that and save people the effort of adapting >>> gtar... >> >> Since I was bringing up the point of streamlining "development", >> I think Pavel's point was that we save 30% by not piping for tgz files. >> Obviously, the infrastructure already supports all this transparently, >> and a little time is necessary to make the selective change to improve >> .tgz >> decompresses. > > I may have misread his message, but I didn't see it as piping, but as two > consecutive processes, on unpacking the file *to the FS*, and the other then > untaring that file. > > btw I think we're deviating a bit ;-)
we're :-) I just checked the pkgtool already does the piping. Since the difference between 'gunzip|tar xf -' and just 'tar xf' is only about 10%, I don't think it's worth pursuing this. > > Michael > -- > Michael Schuster ? ? ? ?http://blogs.sun.com/recursion > Recursion, n.: see 'Recursion' > _______________________________________________ > kde-discuss mailing list > kde-discuss at opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/kde-discuss >
