Date: Wed, 26 Nov 2003 09:43:57 -0500 From: Michael Edenfield <kutulu@kutulu.org> To: Garance A Drosihn <drosih@rpi.edu> Cc: freebsd-current@freebsd.org Subject: Re: 40% slowdown with dynamic /bin/sh Message-ID: <20031126144357.GK15294@wombat.localnet> In-Reply-To: <p06002014bbea2b21766b@[128.113.24.47]> References: <200311251214.23290.doconnor@gsoft.com.au> <00a701c3b33c$f798c5e0$b9844051@insultant.net> <20031126052320.GH15294@wombat.localnet> <p06002014bbea2b21766b@[128.113.24.47]>
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* Garance A Drosihn <drosih@rpi.edu> [031126 06:56]:
> At 12:23 AM -0500 11/26/03, Michael Edenfield wrote:
> >
> >Just to provide some real-world numbers, here's what I got
> >out of a buildworld:
>
> I have reformatted the numbers that Michael reported,
> into the following table:
>
> >Static /bin/sh: Dynamic /bin/sh:
> > real 385m29.977s real 455m44.852s => 18.22%
> > user 111m58.508s user 113m17.807s => 1.18%
> > sys 93m14.450s sys 103m16.509s => 10.76%
> > user+sys => 5.53%
Since I forgot to include this information (sorry!):
Both runs were done by doing:
rm -rf /usr/obj
sync
script <logfile>
cp -f /bin/sh.{dynamic,static} /bin/sh
file /bin/sh
time make -j 4 buildworld
They were on a single CPU Athlon 500 with 320MB of RAM. I actually
don't normally do -j 4 on this system, only -j 2, but I'm use to
building on the dual Athlons we use to make production kernels and it
slipped in. Since it takes hours to run once it's started I just let it
run. :)
--Mike
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