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