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From: Terry Lambert <terry@lambert.org>
Newsgroups: comp.os.linux.networking,comp.unix.bsd.netbsd.misc,comp.unix.freebsd.misc
Subject: Re: TCP latency
Date: Tue, 02 Jul 1996 16:21:49 -0700
Organization: Me
Lines: 28
Message-ID: <31D9AF0D.4C3AE08C@lambert.org>
References: <4paedl$4bm@engnews2.Eng.Sun.COM> <4pf7f9$bsf@white.twinsun.com>
<4qad7d$a5l@verdi.nethelp.no> <4qaui4$o5k@fido.asd.sgi.com> <4qc60n$d8m@verdi.nethelp.no> <31D2F0C6.167EB0E7@inuxs.att.com>
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Xref: euryale.cc.adfa.oz.au comp.os.linux.networking:43776 comp.unix.bsd.netbsd.misc:3908
John S. Dyson wrote:
] Steinar Haug wrote:
]
] > Pentium local 250 usec
] > AMD Linux local 330 usec
] > AMD FreeBSD local 350 usec
] > AMD Linux -> Pentium 420 usec
] > AMD FreeBSD -> Pentium 520 usec
] >
] > So the difference is quite noticeable. Wish I had another P133
] > here to test with, but unfortunately I don't.
]
] All this TCP latency discussion is interesting, but how does this
] significantly impact performance when streaming data through the
] connection? Isn't TCP a streaming protocol?
It's relevent for Samba and HTTP, which are request/response
protocols which tend to not take advantage of the sliding
windows. For these protocols, the latency per packet counts
per packet instead of FTP or similar protocols, where it counts
only once per packet run.
Terry Lambert
terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.