On Sun, 2005-02-06 at 22:21 -0600, micheal wrote:
> On Sun, 2005-02-06 at 21:44 -0600, Thomas Cameron wrote:
> > ----- Original Message -----
> > From: "fly over" <fly_over@xxxxxxxx>
> > To: "Paul Howarth" <paul@xxxxxxxxxxxx>; <fedora-list@xxxxxxxxxx>
> > Sent: Sunday, February 06, 2005 9:23 PM
> > Subject: Faster Searching !
> >
> >
> > > Hi Guruz ,
> > >
> > > I want to ask about the fastest searching command as i am using to search
> > > SUID/GUID files in / directory . script given as:
> > >
> > > ls -l /usr/bin | awk '/^-.....[s]/ { print $3, $9 }'
> > >
> > > or using 'find' utility as below
> > >
> > >
> > > find /usr/bin -perm +6000
> > >
> > >
> > >
> > > now the question is Which works faster, script without 'find' or with it?
> > > and How do you know?
> > >
> > > thankx.
> >
> > Run each command under /usr/bin/time:
> >
> > /usr/bin/time ls -l /usr/bin | awk '/^-.....[s]/ { print $3, $9 }'
> >
> > /usr/bin/time find /usr/bin -perm +6000
> >
> > My bets are on the find command - the ls command relies on a pipe to a
> > completely different command, which is going to slow the whole process down
> > a bunch.
> >
> > Thomas
> >
> And for the perpetually curious:
>
> Find
>
> real 0m0.025s
> user 0m0.002s
> sys 0m0.019s
>
and on mine this was 6% CPU with 183 minor page faults
> ls awk combo
>
> real 0m0.127s
> user 0m0.092s
> sys 0m0.042s
>
this was 20% CPU with 518 minor page faults.
(after running find, so the directory data was probably already in
cache)
The clear winner ----->> find
