Date: Fri, 1 Feb 2002 00:06:37 -0500 From: parv <parv_@yahoo.com> To: Steven A <salyari@cs.uchicago.edu> Cc: freebsd-questions@freebsd.org Subject: Re: PERL way too slow on cat operation; me wonders what is going on Message-ID: <20020201050637.GA4068@moo.holy.cow> In-Reply-To: <20020131212634.A13452@abyss.cs.uchicago.edu> References: <20020131212634.A13452@abyss.cs.uchicago.edu>
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in message <20020131212634.A13452@abyss.cs.uchicago.edu>,
wrote Steven A thusly...
>
> hi,
>
> first of all, my uname -a: FreeBSD oberon.cs.uchicago.edu
> 4.4-RELEASE FreeBSD 4.4-RELEASE #0: Tue Sep 18 11:57:08 PDT 2001
> murray@builder.FreeBSD.org:/usr/src/sys/compile/GENERIC i386
>
> now:
>
> the following perl script takes 8 minutes to execute on both of my
> freebsd systems (two AMD K6-2 300s):
>
> cat 80megfile.ps > perl cat.pl > output.ps
>
> cat.pl:
> while($_ = <STDIN>) {
> print $_;
> }
> however,
>
> cat 80megfile.ps > cat - > output.ps
>
> takes 2 seconds on the same system.
>
> running that perl script on a debian system takes a few seconds
> also as does the cat -.
for one thing is the first ">" a typo? shouldn't that be a pipe...
cat file | cat - > anotherfile
cat file | perl cat.perl > otherfile
...in any case, it took me 19-20 seconds w/ both the pipe lines,
unlike the disparity that you are seeing. btw, i used perl 5.6.1.
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