Re: telnet login and ftp too slow


Subject: Re: telnet login and ftp too slow
From: Bill Thompson (Billt@Mahagonny.com)
Date: Mon Jan 21 2002 - 20:19:23 MST


On Fri, 19 Jan 2001 21:28:06 -0500
Zeke Runyon <zrunyon@mac.com> wrote:

> I am running YDL2.1 on my 7200/120 serving telnet, ftp, and apache
> httpd. The telnet login to the server is really slow even from another
> machine on my LAN to it (also from outside the network in the same way).
> It pauses after contacting the machine for around half a minute then
> finally displays the login prompt.
>
> FTP slows the same way telnet does, it pauses for around half a minute
> then lets me log in, and after that, changing directories and listing
> files is really slow.
>
> Is this an internal network problem, lack of configuration, lack of
> sufficient RAM (I have 144MB, or whatever the power of two is in that
> area), or just plain lack of CPU power?
>
> How can I speed it up?

I have seen this happen with other Linux servers where DNS lookups are
failing. The server preforms a reverse DNS lookup on the client to verify
the connection. If there is no DNS server or the workstations has no DNS
entry it could take several minutes for the lookup to time out. If you do
not have a DNS server for your LAN you can make DNS entries for your
workstations in the /etc/hosts file of the server.

-- 
BillT@Mahagonny.com - PGP KeyID#: 0xFB966670

"Crappy old OSes have value in the basically negative sense that changing to new ones makes us wish we'd never been born." -Neal Stephenson 1999



This archive was generated by hypermail 2a24 : Mon Jan 21 2002 - 20:34:49 MST