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- Path: inforamp.net!usenet
- From: pcp@inforamp.net (Christopher Parke)
- Newsgroups: comp.dcom.modems
- Subject: Re: v34 speed on txt files???
- Date: 20 Mar 1996 01:55:04 GMT
- Organization: InfoRamp Inc., Toronto, Ontario (416) 363-9100
- Message-ID: <4inoho$jnj@sam.inforamp.net>
- References: <4hqq0e$eqn@sam.inforamp.net> <4hr16a$bci@nntp1.best.com> <4i4rhk$672@news.ios.com> <Pine.SUN.3.91.960313071128.12637A-100000@access5.digex.net> <4i9p1b$s1e@news.ios.com> <Pine.SUN.3.91.960315115620.14771A-100000@access2.digex.net> <4ih8n0$eqq@nnrp1.news.primenet.com> <4ihj2q$rk4@news3.digex.net> <4iimcj$gj6@hg.oro.net>
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- I have the 31.2 connection on a USR and just got 10 kb/s.
-
-
-
-
- In article <4iimcj$gj6@hg.oro.net>, estarry@oro.net says...
- >
- >fairbank@access.digex.net (Eric Fairbank) wrote about {Re: v34 speed on txt
- >files???} in 'comp.dcom.modems'...
- >
- >~ Don't be sorry, I want more input on this. I did some testing on the
- >~"bible" file. Without compression, I got 3385cps, with compression,
- >~7680cps. That's a comression ratio of 2.26:1 I *know* that the v.42bis
- >~protocol can compress files to 4:1. Some files can go as high as 10:1
- >~and more (contrary to popular belief). I'm just disputing Mr.
- >~Kristal's claim that he *regularly* gets 10k/sec on general text
- >~files. Iv'e asked for a specific site and file name, but I guess he is
- >~unwilling to back up his claim. His test file is useless for real
- >~world comparisons. I would like to see 3:1 or 4:1, as a test for my
- >~own modem and to just see it for myself.
- >
- >~Thanks for your input
- >~Eric
- >========================
- >
- > You want a large real world redundant on-line file! Try
- ><ftp://ftp.microsoft.com/Is-IR.txt>. I use this for a test file but always
- >stop before completion, it's 7 Mg. Depending on time of day and Net traffic,
- >I've seen max. throughput of 8.4 KByte/sec on this file (6-7 KByte/sec being
- >the norm). With my 14.4 modem this works out to about 5.9:1 max.
- >compression. LAPM supports up to 12 KByte/sec with a 14.4 modem. My ISP's
- >28.8 modems and my 14.4 modem are *both LAPM compliant* and both set at
- >115,200 bps. This is while using WfW v3.11. If I lower MSS from my normal
- >1460 to 512 this 6-7 KByte/sec rate will drop by 2-3 KByte/sec. Naturally a
- >modem that only supports MNP compression or connects with a MNP modem should
- >expect compression ratios proportionately lower than mine.
- > The text portion of Web pages will be between 4-6 KByte/sec if it's
- long
- >enough to get compression fired up, 15-20,000 bytes or larger.
- > Two V.34/28.8-LAPM modems should easily transfer generic text files
- in the
- >neighborhood of 19-20 KByte/sec! After all they are rated at 230,400 bps.
- > Remember, no matter what type of modem you have you can never
- download
- >faster than the other end can upload! "If you assume the other modem is
- >running at 100% you will probably be 100% wrong." If my ISP was running at
- >100% then I would see 12 KByte/sec text file transfers instead of the 6-7
- >KByte/sec rate I now get.
- >
- > Ed...
- >______________________________________________________
- > ** Common Sense Is Not Common **
- >
-
- --
- --
- Best Regards
- PCP
- " Why is there something rather than nothing? "
-
-