<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#ffffff"> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> Thanks for this confirmation, William. I had begun to suspect that this was the problem and I have already planned to replace the switches due to some faulty ports (thanks to a lightning strike). Anyway, can you confirm that a 10/100 connection on the client should be enough as long as the server is using a gigabit NIC? The server already has the necessary NIC, but the 10/100 switches were purchased for a steal a little while ago before we went to thin clients. Thanks again... This is a relief knowing that it is not a problem with my configuration files. Are there any special configuration tricks I can employ in the interim that might lessen the saturation? I am already running Firefox and OpenOffice as local apps. ~Cheers,  <div dir="ltr"> <div> <hr>Mathieu Pelletier Biblical Studies Department Theological College of Zimbabwe Tel: +263 9 287032/3 Ext: 214 <a href="mailto:mpelletier@tcz.co.zw">mpelletier@tcz.co.zw</a> <a href="http://www.tczonline.com">www.tczonline.com</a> </div> <div style="padding: 10px 0pt 5px; font-family: arial,sans-serif; font-size: 13.3px;">Chat <img src="cid:part1.09000306.02090706@tcz.co.zw" style="vertical-align: middle; padding-right: 5px;" alt="" height="16" width="16">Google Talk: mkpelletier <img src="cid:part2.07020700.02030303@tcz.co.zw" style="vertical-align: middle; padding-right: 5px;" alt="" height="16" width="16">Skype: mathieu.pelletier</div> </div>  On 05/14/2010 06:00 PM, k12osn-request wrote: <blockquote cite="mid:mailman.35.1273852808.791.k12osn@redhat.com" type="cite"> <pre wrap="">Send K12OSN mailing list submissions to <a class="moz-txt-link-abbreviated" href="mailto:k12osn@redhat.com">k12osn@redhat.com</a> To subscribe or unsubscribe via the World Wide Web, visit <a class="moz-txt-link-freetext" href="https://www.redhat.com/mailman/listinfo/k12osn">https://www.redhat.com/mailman/listinfo/k12osn</a> or, via email, send a message with subject or body 'help' to <a class="moz-txt-link-abbreviated" href="mailto:k12osn-request@redhat.com">k12osn-request@redhat.com</a> You can reach the person managing the list at <a class="moz-txt-link-abbreviated" href="mailto:k12osn-owner@redhat.com">k12osn-owner@redhat.com</a> When replying, please edit your Subject line so it is more specific than "Re: Contents of K12OSN digest..." Today's Topics: 1. Re: Clients freezing, server losing network (Mathieu Pelletier) (William Fragakis) ---------------------------------------------------------------------- Message: 1 Date: Fri, 14 May 2010 11:22:43 -0400 From: William Fragakis <a class="moz-txt-link-rfc2396E" href="mailto:william@fragakis.com"><william@fragakis.com></a> To: <a class="moz-txt-link-abbreviated" href="mailto:k12osn@redhat.com">k12osn@redhat.com</a> Subject: Re: [K12OSN] Clients freezing, server losing network (Mathieu Pelletier) Message-ID: <a class="moz-txt-link-rfc2396E" href="mailto:1273850563.11510.6.camel@localhost.localdomain"><1273850563.11510.6.camel@localhost.localdomain></a> Content-Type: text/plain; charset="UTF-8" Your network is simply saturating. When I first set up a K12ltsp system, we would saturate 10/100 at anything over 5 clients on a server using anything that was graphically intense (Flash, Tux Math, etc.). The symptoms were exactly as you described. The packets start colliding and things go downhill quickly. Now, at home, using an Athlon X2 and just a couple of Atom clients and integrated intel video, I see a big difference in full screen youtube videos going from 10/100 to gigabit . I've gone from maybe 1-2 fps to 8-10 fps. Even though it's a small network, for grins, I decided to see if upgrading to gigabit would make a difference. I was surprised how much a difference it made. Moral of the story: You can't have too much bandwidth between the server and the clients. Regards, William </pre> <blockquote type="cite"> <pre wrap="">Message: 1 Date: Thu, 13 May 2010 10:24:43 +0200 From: "Mathieu Pelletier" <a class="moz-txt-link-rfc2396E" href="mailto:mpelletier@tcz.co.zw"><mpelletier@tcz.co.zw></a> To: <a class="moz-txt-link-abbreviated" href="mailto:k12osn@redhat.com">k12osn@redhat.com</a> Subject: [K12OSN] Clients freezing, server losing network Message-ID: <a class="moz-txt-link-rfc2396E" href="mailto:4BEBB74B.5060503@tcz.co.zw"><4BEBB74B.5060503@tcz.co.zw></a> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" Greetings Everyone, I am having a problem with my Fedora 13 server and LTSP clients. My server is an AMD Athalon X2 Dual core, with 8 gig memory, 1 terabyte striped raid array, and two ethernet cards (1 for clients, and 1 for rest of the network; server is also network dhcp server). My switches, unfortunately are only 10/100 until I can upgrade them. I am running around 25 clients which all seem to run without issues. The clients (p4's with about 128mb memory) are running firefox and openoffice using ltsp-localapps. The only exception is that every now and again, the clients will freeze. On the server everything appears okay, i.e. not frozen or under extreme load (the load average is somewhere around 0.42 or so). However it seems like both network cards (on the server) lose their connection for about ten minutes. I cannot ping my other server or any other computer for that matter. Even if /etc/init.d/network restart or ifconfig ethX down/up the cards still do not acquire a network connection. After about ten minutes the network returns and the clients unfreeze. I was wondering if maybe there is a power manager app turning off the network cards on the server, but I can't seem to determine if this is the cause or not. Does anyone have any ideas on where I should start looking? I have run dmesg | grep error, etc but I cannot see anything that begins to explain my problem. Any help would be greatly appreciated. ~Cheers! ------------------------------------------------------------------------ Mathieu Pelletier Biblical Studies Department Theological College of Zimbabwe Tel: +263 9 287032/3 Ext: 214 <a class="moz-txt-link-abbreviated" href="mailto:mpelletier@tcz.co.zw">mpelletier@tcz.co.zw</a> <a class="moz-txt-link-rfc2396E" href="mailto:mpelletier@tcz.co.zw"><mailto:mpelletier@tcz.co.zw></a> <a class="moz-txt-link-abbreviated" href="http://www.tczonline.com">www.tczonline.com</a> <a class="moz-txt-link-rfc2396E" href="http://www.tczonline.com"><http://www.tczonline.com></a> Chat Google Talk: mkpelletier Skype: mathieu.pelletier On 05/12/2010 06:00 PM, k12osn-request wrote: </pre> <blockquote type="cite"> <pre wrap="">Send K12OSN mailing list submissions to <a class="moz-txt-link-abbreviated" href="mailto:k12osn@redhat.com">k12osn@redhat.com</a> To subscribe or unsubscribe via the World Wide Web, visit <a class="moz-txt-link-freetext" href="https://www.redhat.com/mailman/listinfo/k12osn">https://www.redhat.com/mailman/listinfo/k12osn</a> or, via email, send a message with subject or body 'help' to <a class="moz-txt-link-abbreviated" href="mailto:k12osn-request@redhat.com">k12osn-request@redhat.com</a> You can reach the person managing the list at <a class="moz-txt-link-abbreviated" href="mailto:k12osn-owner@redhat.com">k12osn-owner@redhat.com</a> When replying, please edit your Subject line so it is more specific than "Re: Contents of K12OSN digest..." Today's Topics: 1. OT: Technology Position Coos Bay Oregon (Joe Burkleo) ---------------------------------------------------------------------- Message: 1 Date: Tue, 11 May 2010 17:20:56 -0700 From: "Joe Burkleo"<a class="moz-txt-link-rfc2396E" href="mailto:joeb@scesd.k12.or.us"><joeb@scesd.k12.or.us></a> To:<a class="moz-txt-link-rfc2396E" href="mailto:k12osn@redhat.com"><k12osn@redhat.com></a> Subject: [K12OSN] OT: Technology Position Coos Bay Oregon Message-ID:<a class="moz-txt-link-rfc2396E" href="mailto:4BE991F7.0F3C.0098.1@scesd.k12.or.us"><4BE991F7.0F3C.0098.1@scesd.k12.or.us></a> Content-Type: text/plain; charset=US-ASCII Sorry about the off topic posting. We are looking for a Tech at our ESD here on the Southern Oregon Coast. <a class="moz-txt-link-freetext" href="http://www.scesd.k12.or.us/current%20job%20postings/09-10-25%20Technology%20Technician%20III.pdf">http://www.scesd.k12.or.us/current%20job%20postings/09-10-25%20Technology%20Technician%20III.pdf</a> Thanks, Joe ------------------------------ _______________________________________________ K12OSN mailing list <a class="moz-txt-link-abbreviated" href="mailto:K12OSN@redhat.com">K12OSN@redhat.com</a> <a class="moz-txt-link-freetext" href="https://www.redhat.com/mailman/listinfo/k12osn">https://www.redhat.com/mailman/listinfo/k12osn</a> End of K12OSN Digest, Vol 75, Issue 4 ************************************* </pre> </blockquote> <pre wrap="">-------------- next part -------------- An HTML attachment was scrubbed... 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