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From: Terry Lambert <terry@lambert.org>
Newsgroups: comp.unix.bsd.netbsd.misc,comp.unix.bsd.bsdi.misc,comp.unix.solaris,comp.unix.aix
Subject: Re: ISP hardware/software choices (performance comparison)
Date: 18 Jan 1996 21:27:01 GMT
Organization: Utah Valley State College, Orem, Utah
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Distribution: inet
Message-ID: <4dmdv5$h7k@park.uvsc.edu>
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peter@cyklop.volvo.se (peter hakanson) wrote:
]
] As anyone who have tried using NFS over slow/irregular links
] NFS-over TCP is a BIG improvment ( afactor of 10 can easily
] be acieved in some cases)
]
] I have tried. On a LAN UDP is faster, as expected.
]
] So do dispute NFS over TCP unless you have experience about it!
I have used NFS over TCP on a BSD platform, if that has any
real relevance. I think claims about it for any OS are largely
anecdotal without benchmarks vs. non-TCP on the same hardware.
Even then, benchmarks can easily lie. For instance, the VXFS/UFS
comparison on UnixWare was based on the default block size for
UnixWare UFS being 4k instead of 8k. It would have to be a more
than casual study citing a single figure of merit.
I do know that there is an issue about getting a response on an
interface other than the one you sent on, which is quite possible
with a multihomed host (different IP aliases mean that an incoming
packet for your host might show on any one of the logical IP
addresses associated with a single hardware interface).
Multihoming is typical for ISP's which provide domain name services
and/or WWW services using the clients domain address.
Regards,
Terry Lambert
terry@cs.weber.edu
---
Any opinions in this posting are my own and not those of my present
or previous employers.