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Re: [PATCH] dfa: save memory for states


From: Norihiro Tanaka
Subject: Re: [PATCH] dfa: save memory for states
Date: Tue, 11 Oct 2016 08:35:24 +0900

Hi Bruno,

On Tue, 11 Oct 2016 08:25:39 +0900
Norihiro Tanaka <address@hidden> wrote:

> Intel(R) Core(TM)2 Duo CPU     E7500  @ 2.93GHz
> gcc version 4.4.7 (GCC)
> Linux rhel6 2.6.32-642.el6.x86_64 #1 SMP Wed Apr 13 00:51:26 EDT 2016 x86_64 
> x86_64 x86_64 GNU/Linux
> 
> - before
> 
> $ time -p env LC_ALL=C grep -vf 600 600
> real 3.95
> user 3.35
> sys 0.59
> 
> - after
> 
> $ time -p env LC_ALL=C grep -vf 600 600
> real 3.75
> user 2.81
> sys 0.70

Sorry, I mistakenenly used pre-installed grep.  I tested it with grep in
correct path.  The version of grep is 2.26.

$ seq -f '%g bottoms bear on the wall' 600 >600

- before

$ time -p env LC_ALL=C src/grep -vf ~/600 ~/600
real 3.70
user 2.26
sys 1.42

- after

$ time -p env LC_ALL=C src/grep -vf ~/600 ~/600
real 2.57
user 2.20
sys 0.31

Thanks,
Norihiro




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