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Old 08-21-2005, 11:39 PM   #1
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Registered: Nov 2003
Location: Virginia
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Transfer Rate Between PC's is slow. Please help

I am running Debian 3.1 on a AMD K6-2 500. When I use either ftp or samba to transfer files between my linux box and my windows box I get a top of 50Mbit no matter the file size. Linux is showing these details for my NIC:

linux:~# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
Transceiver: internal
Auto-negotiation: on
Current message level: 0x00000001 (1)
Link detected: yes

linux:~# mii-tool -v
eth0: negotiated 100baseTx-FD, link ok
product info: Davicom DM9101 rev 0
basic mode: autonegotiation enabled
basic status: autonegotiation complete, link ok
capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
advertising: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

I have a D-Link DI-604 router and CAT6 from the router to both boxes. My win box is a AMD Athlon XP 2600+ with a on board Nvidia nForce 100Mbit nic and a Marvell Yukon 1Gbit NIC. I get the same speed no matter which NIC I use in my Win box. When I log onto my ftp locally from my nix box and download a file I get my full 100Mbit speed without a problem. I am not sure where the problem is but when I transfer any files VIA ftp or samba to my Win box from my nix box I only get 50Mbit. Any ideas would be helpful. Thanks
Old 08-23-2005, 06:51 PM   #2
Registered: Jul 2005
Location: West Coast South, USA
Distribution: debian 3.1
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Im not sure, from your message, of the topology of your network:

Are there any switches/hubs?

ALso, what are u using to measure the netwk thruput..?
Old 08-23-2005, 06:59 PM   #3
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Registered: Apr 2004
Location: Baton Rouge, Louisiana, USA
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I've never tried transfering files with ftp over my LAN, but my experience with SAMBA has been that whether it's Windows<->Windows or Windows<->Linux or Linux<->Linux, SMB/SAMBA only gets ~50Mbit at best. To get full ~100Mbit, I use NFS from Linux to Linux (I haven't played with NFS with Windows at all).
Old 08-27-2005, 02:46 PM   #4
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Registered: Nov 2003
Location: Virginia
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I have a D-Link router between the PC's and thats it. When I transfer from my Windows PC to my Linux PC I get my 100mbit no problem. The only speed problem is when I transfer from Linux to Windows and thats when I get 50mbit.

If I log onto my FTP locally on my linux box and downlaod a file I NO speed problems at all. I have NO idea what it could be. I have 3 of the drives in my linux box mounted on my Windows box but I dont think that is the problem since it works frne when I go from windows to linux... Any ideas?


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