Re: Slow FTP transfer Linux -> VMS

On Aug 28, 3:02 am, Robin Schipper <"thespriteman <remove_this> wrote:
Hi,

when i try to put a big file (lets say 100 Mb) from a Linux system trugh
FTP on a VMS system, the max speed is 1,5 MB/s
when i try to put the same file from another VMS system (on the same
network) to the VMS box the speed is about 10MB/s (it is a 100Mb network)

does anyone know why the linux box doesn't speed up, and how to solve it?

With Regards,

Robin Schipper

Robin,

There are many reasons for why a large transfer between two systems
can be slow.

In the case described in the posting, I would also want to know what
the speed of equivalent transfers between the Linux system and other
systems. A LAN trace of the communications between the two systems can
also be educational.

There are many possible causes:

- mis-configured communications hardware (full/half duplex mismatches
produce impressive slowdowns when ACK packets get lost)
- traffic shaping devices in the data stream
- other network issues

- Bob Gezelter, http://www.rlgsc.com
.

Relevant Pages

  • Re: TCP/IP connection problem
    ... that includes routers) but a mask problem. ... These changes depend upon what type network connectivity ... then the mask on the VMS system is not ... With those ranges you can use subnetting which is usually ...
    (comp.os.vms)
  • output from cron ssh to VMS?
    ... I would like to run a program on a VMS system under cron control on a ... Linux system. ... Using the ssh flag "-t" does not help. ...
    (comp.os.vms)
  • Re: nsswitch.conf
    ... >>to resolve other windows systems IP addresses. ... >>support to true makes the linux system run a wins server. ... isn't appropriate on a network with 3 boxes:) I can browse my windows ...
    (Fedora)
  • Re: Telnet problem
    ... >> network to my Linux system. ... >> I tried to telnet to the same machine and It works. ... > iptables firewall. ... If he's using it on a trusted network (which is the impression I get, ...
    (alt.os.linux)
  • Re: /etc/protocols, /etc/services and /etc/networks ? who fills these files.
    ... > I do not have /etc/networks in my linux system. ... (These man pages exist in Debian or Ubuntu. ... YMMV with other distros.) ... /etc/networks is required for network operation. ...
    (comp.os.linux.networking)