[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH][RFC] New 'true' program
From: |
Alfred M. Szmidt |
Subject: |
Re: [PATCH][RFC] New 'true' program |
Date: |
Tue, 23 Nov 2004 08:18:26 +0100 |
More than just a few bytes:
$ /usr/bin/time true
0.01user 0.00system 0:00.02elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (134major+35minor)pagefaults 0swaps
I think that this is valid for the ``false'' program too:
$ /usr/bin/time false
Command exited with non-zero status 1
0.00user 0.02system 0:00.02elapsed 90%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (134major+35minor)pagefaults 0swaps
It's not a matter of just a few bytes of disk space, but a somewhat
considerable amount of system resources to ``do nothing,
(in)successfully''.
Where is this "considerable amount"?
~ $ cat true.c
int main (void) { return 0; }
~ $ gcc true.c -o true-foo
~ $ /usr/bin/time ./true-foo
0.00user 0.00system 0:00.06elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (52major+28minor)pagefaults 0swaps
~ $ /usr/bin/time /bin/true
0.00user 0.00system 0:00.03elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (68major+28minor)pagefaults 0swaps
(and I really do not take time that seriously for "benchmarks" of this
kind, you would have to run it a couple of times and get the average)
- Re: [PATCH][RFC] New 'true' program, (continued)
Re: [PATCH][RFC] New 'true' program, Alfred M. Szmidt, 2004/11/20
Re: [PATCH][RFC] New 'true' program, Felipe W Damasio, 2004/11/21
- Re: [PATCH][RFC] New 'true' program, Paul Eggert, 2004/11/21
- Re: [PATCH][RFC] New 'true' program, Alfred M. Szmidt, 2004/11/21
- Re: [PATCH][RFC] New 'true' program, Felipe W Damasio, 2004/11/23
- Re: [PATCH][RFC] New 'true' program, Alfred M. Szmidt, 2004/11/23
- Re: [PATCH][RFC] New 'true' program, Ricardo Nabinger Sanchez, 2004/11/23
- Re: [PATCH][RFC] New 'true' program, Alfred M. Szmidt, 2004/11/23
- Re: [PATCH][RFC] New 'true' program,
Alfred M. Szmidt <=
Re: [PATCH][RFC] New 'true' program, Alfred M. Szmidt, 2004/11/20