Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
File transfers from a Fedora 4 box to Fedora 4 servers are running at speeds of 44.5MB/sec. When I try to go the opposite way (from servers to workstation) my transfers are running at 4MB/sec. Auto negotiation is turned on and reporting 1000FD. I don't see any errors. Anybody got any ideas on this one?
sounds like it could be a transmit/ recive buffer problem at one end.
is the hardware the same at both ends? it may be that one of the NICs is a bit shitty. If you have spares of the same brand try doing a more scientific test.
also it could be poor bus handling by one end of the transfer.
The OS load was done by Penquin. There are on-board NICs on the servers and the workstation. I hard coded the connection speed at the switch to 1000Mb/auto negotiate and tweaked the sysctl.conf file and got the incoming files up to 24 MB/s (outgoing is still 44.5MB/s. Penguin suggested installing the latest NVidia chipset drivers... that only slowed things back down (though not as slow as before) to 14MB/s. I'm becomming suspicious of the hardware (eth0 on the workstation died shortly after we received the system, so it's been running on eth1.) Hmmm...
sounds like some busted hardware to me.. i'd try it with another system if you can. possibly return the hardware if you can?
a good tool for testing max bandwidth capabilities is 'iperf', that'll at least tell you if its a software problem with either the client or server or if its a hardware problem. i doubt its gonna be a kernel tcp problem seeing as they're all running the same build i guess? just stock FC4?
Well, at this point I am on hold with Penguin. They sent a script to produce some meaningful output diagnose the problem. Haven't heard back but will give it until the end of the week. Thanks for the link... nice one to add to my collection. I'll keep you posted...
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.