*BSD News Article 25952


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Newsgroups: comp.os.386bsd.questions
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From: pitts@mimosa.astro.indiana.edu (Jim Pitts)
Subject: Re: NetBSD - routing and slip
Message-ID: <CJJHoM.r9@usenet.ucs.indiana.edu>
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Organization: Indiana University Astronomy Department
References: <2gv4lc$l0i@darkstar.UCSC.EDU> <1994Jan12.142552.6187@jupiter.sun.csd.unb.ca> <CJJ0w6.ADo@usenet.ucs.indiana.edu> <2h1neg$gju@pdq.coe.montana.edu>
Date: Wed, 12 Jan 1994 23:09:57 GMT
Lines: 47

In article <2h1neg$gju@pdq.coe.montana.edu>,
Nate Williams <nate@bsd.coe.montana.edu> wrote:
>In article <CJJ0w6.ADo@usenet.ucs.indiana.edu>,
>Jim Pitts <pitts@mimosa.astro.indiana.edu> wrote:
>>In article <1994Jan12.142552.6187@jupiter.sun.csd.unb.ca>,
>>Peter Howlett <b6ps@jupiter.sun.csd.unb.ca> wrote:
>>>I can get up to 3000 Chars/Sec on kermit transferring binary (gzip'd) files.
>>                 ^^^^^^^^^^^^^^    ^^^^^^
>
>I have an EXTREMELY hard time believing that since I'm downloading
>binary files with Kermit with my brand new 14.4 and it's maxing out at
>around 1700 Chars/sec with zmodem.  Granted I'm not running 57.6 (38.4)
>but the speed difference + modmem compression should not give you a 
>2 x increase in speed.
>
>
>>>My machine by the way is a 386DX/25 w 8M Ram and X running constantly.
>>
>>I find this -very- hard to believe.  I have basically the same set up except
>>that I run FreeBSD, the sio device drivers, have a faster CPU and use zmodem
>>rather than kermit (I also use ftp with ppp).  I am luck to get 1.2 K/s transfer
>>rate with a 16550A.  Either I am doing something drastically wrong or you are
>>doing something drastically correct.
>
>I also have a difficult time believing it as well.
>
>>I realize that the sio drivers are a slow down, and the 'new' kermit is much
>>more efficent than it used to be ... but a factor of 2 or more?
>
>I don't understand the 'sio drivers are a slow down' part of that.  The sio
>drivers are much more efficient than the NetBSD drivers publically available.
>
>

Many moons ago I posted posted something about how the sio drivers had solved
all the problems in my life ... how great they are.  I got several flame
messages telling me that the NetBSD drivers were faster and I was an idiot.
Not the latter -may- be true, I don't deny it ... but I honestly never saw
any performance loss when I went to FreeBSD and its sio drivers.  I
never measured with enough intrest to notice a speed -increase-.


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