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Suggestion: /usr/bin/time new option -B and/or --BogoMI
From: |
Neville Dempsey |
Subject: |
Suggestion: /usr/bin/time new option -B and/or --BogoMI |
Date: |
Tue, 05 May 2009 15:39:13 +1000 |
$ /usr/bin/time -V
GNU time 1.7
Hi,
Suggestion: add a new option -B and/or --BogoMI (Algorithm BMI) switch
that scales the CPU time result to appear as it it ran on a 1 BogoMIP
CPU. That way one doesn't have to do a CPU speed lookup and an mental
calculation to get a ball park idea on how slow/fast different
algorithms run.
Most useful if the different algorithms cannot run on a common CPU
and/or language and/or compiler.
eg: http://rosettacode.org/wiki/Prime_decomposition c.f. BogoMI
On linux the BogoMips is calculated at kernel start, and can be quickly
retrieved from /proc/cpuinfo
reg.
N
c.f. http://en.wikipedia.org/wiki/BogoMips for a discussion of the
BogoMIPS merits (and/or lack of) for measuring CPU performance.
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