This is really good posting and should belong to the list. Thanks to everyone, seems I have to upgrade all of VGA card, however I'll compare to other solutions first. Thanks!
Begin forwarded message: Date: Fri, 12 Mar 2004 06:50:58 -0500 From: "Hedemark, Magnus" <[EMAIL PROTECTED]> To: "'Beast'" <[EMAIL PROTECTED]> Subject: RE: [Ltsp-discuss] Bandwith, spec of client and benefit of ltsp > -----Original Message----- > From: Beast [mailto:[EMAIL PROTECTED] > Sent: Friday, March 12, 2004 5:13 AM > To: [EMAIL PROTECTED] > Subject: [Ltsp-discuss] Bandwith, spec of client and benefit of ltsp > > > Hi all, > > I'm new to this list, pls pardon my ignorance. > > How much band with is required by each client? I have fast > ethernet switch but most client are only support 10Mbps, is > this enough? (around 100 clients) Each client will actually only use a little more than 1Mbps most of the time. I did some tests with LTSP and used RRDtool to graph bandwidth utilization and it is really quite small. However the number of clients that you wish to support is rather high. It might be worth putting a second ethernet card in the server and read up on the Linux "bonding" module to concatenate two 100Mbps ethernet cards together in one server. It's not because you're going to actually *use* close to 100Mbps, but Ethernet becomes very inefficient under high load so you want to try to keep traffic utilization averaged under 35% on the server if you can in order to maintain low network latency. > May i ask what is the 'real' benefit of using ltsp? For me, it is the idea that I can buy a $300(USD) thin client with a >10 year life span, boot it off the network and have almost zero maintenance costs at the desktop. I can focus my attention on making one machine work exceedingly well rather than dividing my attention among many machines. > Yes i know it can utilise 'old' PC to run resources intensive > apps, but how 'old'? For the server I am running an old Compaq Proliant with dual Pentium III's, 677MHz ea. if I recall correctly. Normally a machine this old would go out with next week's trash. But even this early in the morning before most people are in the office I have about 60 people logged into it. I'm not as interested in using older machines on the desktop. I know that this is something that LTSP project pushes but I'm trying to make less work for myself. I am pushing to buy HP t5500 thin clients which can be deployed by anybody with no special expertise. Deploying older computers with LTSP requires more time and expertise. > it mostly depends on how good is VGA > card and monitor of clients. Yes, this is precisely right. IMHO with a poor video card it is not even worth the effort. With a good video card, a very old PC can appear to be very new with LTSP. > So anyone here using old pc as client for day to day working? > what is the minimal requirement? Some people use 486's but I have a personal minimum of Pentium 100 with 32MB RAM. Ethernet card must be PCI. Video must be either PCI or AGP. I require PCI because older slot architectures become much more problematic to manage. Video memory is much more important to me. It must be able to drive a 17" LCD monitor to 1280x1024 resolution with 16 bit color depth. --beast ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
