From owner-freebsd-questions  Sat Feb 17 17:18:38 2001
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Date: Sat, 17 Feb 2001 18:18:12 -0700
From: Colin Faber <cfaber@fpsn.net>
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To: cjclark@alum.mit.edu
Cc: Cliff Sarginson <cliff@raggedclown.net>,
	Peter Pentchev <roam@orbitel.bg>, Artem Koutchine <matrix@ipform.ru>,
	questions@FreeBSD.ORG, security@FreeBSD.ORG
Subject: Re: Efficiency [Was: Re: rpc.statd attack]
References: <E14TmQC-0006Ip-00@post.mail.nl.demon.net> <20010217165124.C62368@rfx-216-196-73-168.users.reflex>
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What is the point of this thread, I fail to see how its critical to freebsd
security, If someone wants to waste cpu cycles its not hard.


"Crist J. Clark" wrote:

> On Fri, Feb 16, 2001 at 03:03:44PM +0000, Cliff Sarginson wrote:
>
> [snip]
>
> > As you can see makes all the difference :)
> > But this is under Solaris ...
> >
> > $ time rpcinfo -p | egrep -e 'udp.*status$' | awk '{print $4}'
> > 32790
> >
> > real    0m0.12s
> > user    0m0.04s
> > sys     0m0.07s
> >
> > $ time rpcinfo -p | awk '($3 == "udp") && ($5 == "status") {print $4 }'
> > 32790
> >
> > real    0m0.11s
> > user    0m0.05s
> > sys     0m0.04s
>
> Shocking. rpcinfo takes the same amount of time to run in both
> examples. You are not incuding the awk's and grep's in your
> measurements.
>
> ITYM,
>
>   $ rpcinfo -p | time  egrep -e 'udp.*status$' | time awk '{print $4}'
>   996
>           0.05 real         0.00 user         0.00 sys
>           0.04 real         0.00 user         0.00 sys
>
>   $ rpcinfo -p | time awk '($3 == "udp") && ($5 == "status") {print $4 }'
>   996
>           0.03 real         0.00 user         0.00 sys
>
> --
> Crist J. Clark                           cjclark@alum.mit.edu
>
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