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RE: [LUG] Old PCs



Hi Tom and all

What is LTSP and how can I find out about it? I will try a google search
but it does sound promising. Thanks.

Rich


On Mon, 2003-04-14 at 12:42, Brough, Tom wrote:
> Hi Rich, fellow recycler :-) !
> 
> Apollogies to all for the long post (again)....
> 
> > And so the journey continues and I am about to embark on a very long leg
> If you look upwind on the horizon you can just see my storm battered yacht
> :-)
> 
> hope this helps .....
> 
> For low spec Slackware is nice, I have a Pentium 120 /w 64Mb Ram running
> slackware 8.1, it works (sort of if you like watching X krank up in slow mo
> (KDE3 that is) ). This is slowly grinding down the ferrite on my swap
> partition ! There is always a service & functionality / hardware trade off
> with older machines. You can use a contemporary distro for the age of the
> machine, but you are liable to any unpatched vulnerabilities ( which is why
> everybody tries to keep up to date). Nothing stays still in this game.
> 
> I have a 486 50Mhz (24Mb) machine this runs Slackware 7.2 comfortably. But
> then again this is run version 1.9? of KDE.
> 
> You can improve things by using less mainstream / memory hungry  X managers
> like XFCE and blackbox (or fluxbox ?).
> 
> bootable CD based distros like knoppix and freeduc might work. Never got
> them working on my P 120 though
> 
> Ram upgrades of older machines can be very tricky. Some old motherboards
> dont use all the bus lines that the new memory sticks use, so for example
> you can put a 128Mb stick in and find it only uses 32Mb because the 2
> highest address lines arent supported. If the motherboard manual says you
> can populate the mem slots with 4 x 32 Mb then dont expect  2 x 64Mb to work
> (even if the chips are cheaper ) !
> 
> If you have old memory cards lying around then by all means try
> experimenting, but I have always found researching the right chips for the
> right board a time consuming business be it new chips for old boards or old
> chips in the recycle bin, and its not always very rewarding. 30pin simms are
> practically non existant, 72pin simms are expensive and also dying out,
> dimms, sdram are current, ddr is the new boy on the block, which means dimms
> will be expenisve soon, the whole process of memory upgrades (for old
> machines) is messy.
> 
> For my recycle project I have found that "if you havent already got it, dont
> try to upgrade it unless you have a large wallet ;-)" of course most of my
> machine are 486 / early Pentiums or around that era so the more modern the
> machine you are recycling the better chance you have of finding the right
> chips to upgrade and at a (more) reasonable price. 
> 
> There will come a point when adding more memory doesnt make any difference
> (this is usually a factor of the amount of CPU cache and other hardware
> attributes). But dont let me put you off experimenting :-) Rember recycle
> law no 1. "you can never break something thats already broken".
> 
> 
> <LTSPAdvocacy mode=on>
> Alternatively if you want to use a "up to date" distro with old kit and you
> have a high spec server free (ie 1 - 2 Gb Ram /w 1.5GHz++ processor) and a
> good network, try LTSP. This IMO is a much better way of reusing old
> resorces because there is less compromise. Your workstations are already out
> of date, you cant upgrade (distro) without hitting a performace problem,
> however a well speced LTSP server is more "future proof". Some people in the
> LTSP community say that, as a work station a P 166 with 32Mb of memory is
> adequate and that adding more memory gives little or no additional benifit,
> I have never put this to the test.
> 
> However I have run a 16Mb 486 workstation off my current LTSP server and it
> is slow, but the software Im running (via) the Server  is OpenOffice.org on
> RH8.0. Now could you imagine trying to run OpenOffice.org and RH8.0 on an
> old 486 with 16Mb of ram as a standalone, come to think of it could you
> imagine trying to install RH 8.0 on 486 with 16Mb ram.? (please dont try
> this at home!).
> 
> My server cost under 500 to build from new parts, the workstations where
> give away, with 4 workstations thats 500 / 4 = 125 per station. The server
> hasnt reached capacity by a very long chalk so add another 8 stations ( give
> away again) thats 500 / 12 = 41 per station, and I expect I can drive the
> cost per workstation down further, just cant test that theory yet. Of course
> there is a point where the server gets saturated, so you just build another
> server for load sharing, and so on.
> 
> Another thing to consider old boxes have old harddrives, eventually these
> will give up, for LTSP this isnt an issue, it runs diskless !
> 
> If you havnt already guessed I am a big fan of LTSP.
> </LTSPAdvocacy>
> 
> Which ever course you sail have fun :-)
> 
> Tom.
> 
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> 
> 
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