Date: Fri, 9 Sep 2011 06:13:31 +0700 From: Erich Dollansky <erichfreebsdlist@ovitrap.com> To: freebsd-ports@freebsd.org, schaecsn@gmx.net Subject: Re: The cost of a source based package system Message-ID: <201109090613.32012.erichfreebsdlist@ovitrap.com> In-Reply-To: <20110908045328.C6E2E1EE8F1@keeper.homelinux.org> References: <20110908045328.C6E2E1EE8F1@keeper.homelinux.org>
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Hi, how did you manage to get an answer from Google that fast? http://www.google.com/hostednews/afp/article/ALeqM5gK2BT8m9EhMCL0gI-yqyut3UOz-A?docId=CNG.8da7524161341a630734bbb6cf9ce6e4.231 Erich On Thursday 08 September 2011 11:53:28 Stefan Schaeckeler wrote: > Hi all, please don't take this posting too serious. I was just curious ... > > Just the other day, I bought a kill-a-watt. Among other things, I measured the "cost of a source based package system", i.e. I was comparing the energy cost of installing ports from source vs binary packages (setup, see below). > > Case 1: Source based installation > Time: 7 hours, 3 min > Energy: 0.489 kw*h > Price: 4.89 US cent > > Case 2a: Binary packages based installation > Time: 1 hour, 57 min > Energy: 0.079 kw*h > Price: 0.79 US cent > > If the computer is constantly running, then we should add the installation time of case 1 to case 2a: > > Case 2b: Binary packages based installation > Time: 7 hours, 3 min > Energy: (40/1000)kw*(7.05-1.95)h + 0.079 kw*h = 0.283 kw*h > Price: 2.83 US cent > > > > Using source based ports is with almost 5 US cents 6.19 times (case 1 vs case 2a) or 1.73 times (case 1 vs case 2b) more expensive than using binary packages :) > > > - Stefan > > > > Details: > > Price: 1 kw*h = 10 US cent. > > Kill-a-Watt trick: by setting the price per kw to $9.999 (= $10), I could get one more digit of accuracy for the consumed energy by dividing the price by 10. > > HW: Sony vaio pcg-k23 laptop (pentium 4, 2,8 GHz, huge display). Booted into FreeBSD, it consumes around 40 Watt ("idle"). When compiling programs, the power consumption doubles to somewhat above 80 Watt. Internet connection 768kb/s. > > SW: Installed 259 ports via this script: > --- snip --- > date > for i in /usr/ports/x11/xorg-minimal\ > /usr/ports/x11/xorg-apps\ > /usr/ports/x11/xorg-cf-files\ > /usr/ports/x11/xorg-docs\ > /usr/ports/x11/xorg-libraries\ > /usr/ports/shells/bash3\ > /usr/ports/print/teTeX\ > /usr/ports/editors/emacs\ > /usr/ports/editors/joe2\ > /usr/ports/multimedia/xmms\ > /usr/ports/multimedia/ffmpeg\ > /usr/ports/lang/clisp\ > /usr/ports/lang/hugs\ > /usr/ports/lang/swi-pl\ > /usr/ports/lang/llvm-gcc4\ > /usr/ports/lang/gnat\ > /usr/ports/lang/Gofer\ > /usr/ports/x11-toolkits/tk86 > do > cd $i && yes o | make install clean > done > date > halt -p > --- snip --- > > Similarly, 246 binary packages have been installed via pkg_add -r. > > pkg_delete /var/db/pkg/* > rm -rf /usr/ports/distfiles/ > > PACKAGESITE=ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-8-stable/Latest/ > export PACKAGESITE > > --- snip --- > date > for i in xorg-minimal\ > xorg-apps\ > xorg-cf-files\ > xorg-docs\ > xorg-libraries\ > bash3\ > teTeX\ > emacs\ > joe2\ > xmms\ > ffmpeg\ > clisp\ > hugs\ > swi-pl\ > llvm-gcc4\ > gnat\ > Gofer\ > tk86 > do > pkg_add -r $i > done > date > halt -p > --- snip --- > > > The number of ports and binary packages varies slightly. I don't know why. This only introduces a small error. > _______________________________________________ > freebsd-ports@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-ports > To unsubscribe, send any mail to "freebsd-ports-unsubscribe@freebsd.org" > >
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