Le 26/01/2005 � 23:52:20+0000, Dick Davies a �crit
>
> make /tmp/mydir
> ls -lR that and tcpdump what i'm sending to the server
> (about a dozen lines of output)
> ls -lR /usr/local/misc (about 3Gb of mp3s owned by me) and tcpdump what i'm
> sending to the server
> (about a dozen lines of output)
Yes of course, that's because in this directory there no many user, maybe
root, you,.
>
> so it looks like only the one query is done by ls (i.e. it only looks up the
> name when it displays
> the output). How many directories are under /home? Unless we're talking
> hundreds, it shouldn't be
> more than a second or so delay, tops.
[EMAIL PROTECTED] home]# ls -l *|wc
402 3003 20127
[EMAIL PROTECTED] home]#
>
> It does'nt appear to caching (repeating the ls a couple of seconds later
> sends the
> same query), but then i don't think that accounts for your huge delays.
>
>
> It's definitely the uid lookup? Not NFS /home or something
yes because :
> (Is ls * much faster than ls -l)?
[EMAIL PROTECTED] home]# time ls * > /dev/null
real 0m0.089s
user 0m0.000s
sys 0m0.040s
[EMAIL PROTECTED] home]# time ls -l * >/dev/null
real 0m27.110s
user 0m0.258s
sys 0m0.727s
[EMAIL PROTECTED] home]#
Lots of thanks.
--
Albert SHIH
Universite de Paris 7 (Denis DIDEROT)
U.F.R. de Mathematiques.
Heure local/Local time:
Thu Jan 27 13:36:46 CET 2005
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
