Re: Perfomance problem backupscript (more details and tests)

On Tue, 2005-08-30 at 08:17, Joerg Schilling wrote:
> >
> > time star -c -no-fifo  /tmp>/dev/null
> > real    0m30.325s
> > user    0m0.261s
> > sys     0m4.396s
> >
> > gun tar test
> > ----------------------------------------------------------
> > wyatt:/# time tar -c  /tmp>/dev/null
> > real    0m1.054s
> > user    0m0.212s
> > sys     0m0.110s
> 
> If you like to do a _real_ _test_ why do you compare the star time 
> against a dummy command?
> 

In case this isn't clear, gnutar notices when it's output is
connected to /dev/null and doesn't actually bother reading
the files in that case.  This is a special case to make
--times work quickly for estimates like amanada uses to
decide whether to do a full or incremental run.

-- 
  Les Mikesell
   [email protected]