From: "Warrier, Sadanand (Sadanand)" <swarrier@lucent.com>
To: "'9fans@cse.psu.edu'" <9fans@cse.psu.edu>
Subject: RE: [9fans] dumb question
Date: Wed, 26 Jun 2002 15:00:42 -0400 [thread overview]
Message-ID: <C77B73BC1A3ED4118C2000508BAD8A7C047B8B48@ma8117exch001u.inse.lucent.com> (raw)
On my solaris machine
ls -la /usr/sbin/tar
-r-xr-xr-x 1 bin bin 63544 Nov 24 1998 /usr/sbin/tar*
ls -la /opt/exp/gnu/bin/tar
-rwxrwxr-x 1 exptools software 161328 Jul 4 2000
/opt/exp/gnu/bin/tar*
S
-----Original Message-----
From: forsyth@caldo.demon.co.uk [mailto:forsyth@caldo.demon.co.uk]
Sent: Wednesday, June 26, 2002 2:41 PM
To: 9fans@cse.psu.edu
Subject: Re: [9fans] dumb question
> cp is about 60k in plan9 and tar is 80k in plan9. cp on 3 seperate unix
> machines (linux, SCO unix, os-X) in its overcomplicated copying directory
> tree glory is under 30k, on sunOS it happens to be 17k. to tar then untar
> requires two processes using a shared 80k tar, plus some intermediate data
> to archive and process the data, then immediatly reverse this process. cp
> _could_ be written to do all this in 17k but instead our 60k cp cant do
> it, and instead we need two entries in the process table and twice the
> number ofuser space pages.
there's a useful point to be made here with respect to other such
comparisons:
you're overlooking the cost on the other systems of the (usually)
large memory space consumed by the dynamically-linked shared libraries.
that's why their cp seems `small' and plan9's seems `large'. with plan 9,
cp really does take 60k (code, plus data+stack), on the others, it's
anyone's guess: the 17k is the tip of the iceberg.
next reply other threads:[~2002-06-26 19:00 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-26 19:00 Warrier, Sadanand (Sadanand) [this message]
2002-06-27 0:13 ` Steve Arons
-- strict thread matches above, loose matches on Subject: below --
2003-07-15 0:37 [9fans] Dumb question Dan Cross
2003-07-15 3:23 ` boyd, rounin
2002-07-05 9:43 [9fans] dumb question Geoff Collyer
2002-07-01 11:03 rog
2002-07-02 8:53 ` Douglas A. Gwyn
[not found] <rob@plan9.bell-labs.com>
2002-06-28 16:49 ` rob pike, esq.
2002-06-29 2:23 ` Scott Schwartz
2002-06-28 16:39 rob pike, esq.
2002-06-28 16:31 rog
2002-06-28 16:14 rob pike, esq.
2002-06-28 14:10 rob pike, esq.
2002-06-28 15:42 ` Douglas A. Gwyn
2002-06-28 14:08 rog
2002-06-28 7:52 Fco.J.Ballesteros
2002-06-27 22:59 Geoff Collyer
2002-06-28 4:32 ` Lucio De Re
2002-06-27 18:38 forsyth
2002-06-28 8:45 ` Douglas A. Gwyn
2002-06-27 17:07 rog
2002-06-27 17:07 forsyth
2002-06-27 16:33 ` Sam
2002-06-27 14:43 Richard Miller
2002-06-27 14:33 forsyth
2002-06-27 13:20 rob pike, esq.
2002-07-05 9:07 ` Maarit Maliniemi
2002-06-27 13:19 rob pike, esq.
2002-06-27 13:21 ` david presotto
2002-06-27 15:40 ` Douglas A. Gwyn
2002-06-27 12:27 rog
2002-06-27 12:12 Fco.J.Ballesteros
2002-06-27 12:06 Fco.J.Ballesteros
2002-06-27 11:13 ` Sam
2002-06-27 11:15 ` Sam
2002-06-27 10:29 nigel
2002-06-27 9:44 Stephen Parker
2002-06-27 9:43 Fco.J.Ballesteros
2002-06-27 9:36 Fco.J.Ballesteros
2002-06-27 1:22 okamoto
2002-06-27 1:05 okamoto
2002-06-26 23:08 forsyth
[not found] ` <171e27d5f2cfd12a9303117e58818e5b@plan9.bell-labs.com>
2002-06-26 18:27 ` Andrew Stitt
2002-06-26 17:39 ` Sam
2002-06-27 9:17 ` Andrew Stitt
2002-06-27 9:33 ` Ish Rattan
2002-06-27 9:59 ` Lucio De Re
2002-06-27 10:05 ` Boyd Roberts
2002-06-27 10:21 ` Lucio De Re
2002-06-27 15:40 ` Douglas A. Gwyn
2002-06-27 16:57 ` Lucio De Re
2002-06-28 8:45 ` Douglas A. Gwyn
2002-06-28 9:31 ` Boyd Roberts
2002-06-28 14:30 ` Douglas A. Gwyn
2002-06-28 15:06 ` Boyd Roberts
2002-07-01 9:46 ` Ralph Corderoy
2002-06-27 15:36 ` Douglas A. Gwyn
2002-06-27 15:12 ` Sam
2002-06-28 8:44 ` Douglas A. Gwyn
2002-06-26 22:07 ` Micah Stetson
2002-06-26 22:59 ` Chris Hollis-Locke
2002-06-27 0:03 ` Micah Stetson
2002-06-27 0:44 ` Micah Stetson
2002-06-27 9:17 ` Ralph Corderoy
2002-06-27 9:48 ` Boyd Roberts
2002-06-27 10:07 ` John Murdie
2002-06-27 15:40 ` Douglas A. Gwyn
2002-06-26 19:04 rog
2002-06-26 18:41 forsyth
2002-06-26 18:40 David Gordon Hogan
2002-06-26 17:53 rog
2002-06-26 17:45 rob pike, esq.
2002-06-27 9:16 ` Andrew Stitt
2002-06-27 9:17 ` Douglas A. Gwyn
2002-06-26 19:53 ` arisawa
2002-06-27 11:43 ` Ralph Corderoy
2002-06-27 11:04 ` Sam
2002-06-26 8:55 Stephen Parker
2002-06-26 17:18 ` Andrew Stitt
[not found] <nemo@plan9.escet.urjc.es>
2002-06-25 17:06 ` Fco.J.Ballesteros
2002-06-25 18:01 ` Scott Schwartz
2002-06-26 8:41 ` Andrew Stitt
2002-06-26 9:14 ` Nigel Roles
2002-06-26 17:41 ` Andrew Stitt
2002-06-26 16:08 ` Ish Rattan
2002-06-25 16:48 Andrew Stitt
2002-06-26 8:45 ` arisawa
2002-06-26 17:36 ` Andrew Stitt
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