Subject: Re: 3/50 Ethernet speed
To: None <thorpej@nas.nasa.gov>
From: Scott J. Ellentuch <tuc@valhalla.stormking.com>
List: port-sun3
Date: 05/30/1995 13:48:52
In Jason Thorpe's own words (And I ">_") :
> 
> On Tue, 30 May 1995 12:04:36 -0400 (EDT) 
>  "Scott J. Ellentuch" <tuc@valhalla.stormking.com> wrote:
> 
>  > 	Its megabits.  And as for the program, I can post a copy if everyone
>  > doesn't mind.  Its only  :
>  > 
>  >     885 ttcp.c
> 
> Ok, so one of the machines is a Sun running 4.1.1...what's the other 
> one?
>
	AIX 3.2.5 (13Mbit local loop)
>
>  Is that with tcp or udp?  
>
	TCP
>
> After running ttcp, what does `netstat 
> -i' tell you on each machine?
>
	Sorry, I'll do that and get back...
>
> I mean, 2mbits for a sun3 isn't 
> terrible...just for quick comparison (I haven't done a datailed 
> analysis), an ftp between two 486-66 NetBSD-current machines with 
> 16-bit SMC ethernet cards, both on the same relatively low-collision   
> subnet achieves roughly 4.5mbits/sec.
>
	Thats weird, what happened to 10Mbit?
> 
> While ttcp is a useful program (we use it to test the speed of classical IP 
> over ATM links a lot here...), it's output really isn't the only factor 
> to consider when evaluating the overall performance of your network.
>
	Suggestions?  I'm going to short pay our provider today based
on these results.

				Tuc