RE: [leaf-user] Cheap NICs or Expensive NICs?
OK, so I would need 905s if I wanted to route between two 100Mbps networks. As it happens, I have a two house network with two LEAF boxes but the bridge is 802.11b. The boxes claim 22Mbps but there is a fair amount of air and brick between the two. And those boxes are 500MHz and 233MHz. OT PM Lovely. I'll be sure to be careful :) Yes, it's annoying isn't it? There may be viruses somewhere in this text, I'm sure! Our network administrator found a new toy... That or the solicitors got involved. ... Oh right, you were also noting the lack of Zs in authorise and minimise. I've always thought our domain should be SpurSolutions.co.uk. http://www.spellingcow.com/phpBB2/about284.html Americans do love their Zes ;) Then again, we do all sound like Dick Van Dyke. Honest. /OT Thanks, James. -Original Message- From: Peter Mueller [mailto:[EMAIL PROTECTED] Sent: 01 March 2005 18:27 To: James Neave; leaf-user@lists.sourceforge.net Subject: RE: [leaf-user] Cheap NICs or Expensive NICs? Quick question. What is this impact of cheap NICs (8139too, smc900, etc) instead of expensive NICs (3c905)? For instance, when building a NAT/firewall device to share xDSL or cable. Cheaper NICs have a performance penalty, usually in interrupts. Interrupts limit the capability of your network and increase CPU load. If you have a Pentium 75mhz or faster then you should be OK for 20 megabits with cheaper NICs. The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorised. unauthorized? ^ If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it is prohibited and may be unlawful. The contents of an attachment to this email may contain software viruses that could damage your own computer systems. Whilst The Spur Group of Companies has taken every precaution to minimise the risk, we cannot accept liability minimize? ^ for any damage that you sustain as a result of software viruses. Lovely. I'll be sure to be careful :) Regards, P --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95alloc_id396op=click leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html
RE: [leaf-user] Cheap NICs or Expensive NICs?
Quick question. What is this impact of cheap NICs (8139too, smc900, etc) instead of expensive NICs (3c905)? For instance, when building a NAT/firewall device to share xDSL or cable. Cheaper NICs have a performance penalty, usually in interrupts. Interrupts limit the capability of your network and increase CPU load. If you have a Pentium 75mhz or faster then you should be OK for 20 megabits with cheaper NICs. The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorised. unauthorized? ^ If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it is prohibited and may be unlawful. The contents of an attachment to this email may contain software viruses that could damage your own computer systems. Whilst The Spur Group of Companies has taken every precaution to minimise the risk, we cannot accept liability minimize? ^ for any damage that you sustain as a result of software viruses. Lovely. I'll be sure to be careful :) Regards, P --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95alloc_id396op=click leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html
RE: [leaf-user] Cheap NICs or Expensive NICs?
BTW, a single PC has IIRC =400Kbps of throughput due to poor memory mgmt between all the layers. This is without customized reprogramming of the stack. One link is http://www.ifip.or.at/con2000/icct2000/icct452.pdf that estimates 360Kbps on Linux. So cheap NICs might still be a solution if you have a small number of PCs. Rick. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter Mueller Sent: Tuesday, March 01, 2005 1:27 PM To: James Neave; leaf-user@lists.sourceforge.net Subject: RE: [leaf-user] Cheap NICs or Expensive NICs? Quick question. What is this impact of cheap NICs (8139too, smc900, etc) instead of expensive NICs (3c905)? For instance, when building a NAT/firewall device to share xDSL or cable. Cheaper NICs have a performance penalty, usually in interrupts. Interrupts limit the capability of your network and increase CPU load. If you have a Pentium 75mhz or faster then you should be OK for 20 megabits with cheaper NICs. The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorised. unauthorized? ^ If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it is prohibited and may be unlawful. The contents of an attachment to this email may contain software viruses that could damage your own computer systems. Whilst The Spur Group of Companies has taken every precaution to minimise the risk, we cannot accept liability minimize? ^ for any damage that you sustain as a result of software viruses. Lovely. I'll be sure to be careful :) Regards, P --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95alloc_id396op=ick leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95alloc_id396op=click leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html
RE: [leaf-user] Cheap NICs or Expensive NICs?
BTW, a single PC has IIRC =400Kbps of throughput due to poor memory mgmt between all the layers. This is without customized reprogramming of the stack. One link is http://www.ifip.or.at/con2000/icct2000/icct452.pdf that estimates 360Kbps on Linux. So cheap NICs might still be a solution if you have a small number of PCs. This paper is for really old kernels, stating the results don't apply for new 2.2.0 kernel, only for 2.0.34. You can still saturate a 100mbps network with very small packets at ~8kpps. But your packets would have to be ~120 bytes. Anything approaching normal packet size should be ok. Regards, P --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95alloc_id396op=click leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html
Re: [leaf-user] Cheap NICs or Expensive NICs?
If you have a recycled pc store close by, go by and dig through. In my area, there are a couple stores with bins of 100mb 3com's for a couple dollars each. James Neave wrote: Hi, Quick question. What is this impact of cheap NICs (8139too, smc900, etc) instead of expensive NICs (3c905)? For instance, when building a NAT/firewall device to share xDSL or cable. Thanks, James. The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it is prohibited and may be unlawful. The contents of an attachment to this email may contain software viruses that could damage your own computer systems. Whilst The Spur Group of Companies has taken every precaution to minimise the risk, we cannot accept liability for any damage that you sustain as a result of software viruses. --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95alloc_id396op=click leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html
