Subject: Re: ftp: put slower then get?
To: Nathaniel D. Daw <>
From: Jonathan Stone <jonathan@DSG.Stanford.EDU>
List: current-users
Date: 02/24/1997 19:07:49
On Mon, 24 Feb 1997 21:01:19 -0500 (EST), 
"Nathaniel D. Daw" <> writes:

>Presumably this has nothing to do with Matthias' problems, which appear on
>a real network device.

I thought so too, but Matthias says he saw the performance discrepancy
over the loopback device.  

I don't see anyting at *all* similar with, e.g., ttcp.  I wonder if it
could be due to filesystem throughput --e.g., copying the data rather
than mmap'ing it, or some such?

I also tried a simlar test using the krb5-b7 ftpd and ftp client.
I consistently see slightly  higher througput  than Mattias quoted,
(3.5 Mbytes/sec), albeit on a 9Mbyte file and on a P6/200.

I also tried the same test using the stock NetBSD 1.2C ftp client and
the krb5 server.  I saw very similar results.  

My guess is, this is a performance bug in the NetBSD ftp server.