[nycbug-talk] transfer speed

[pete wright]

On 5/19/05, Bjorn Nelson <o_sleep at belovedarctos.com> wrote:
> Michael,
> 
> 
> On May 19, 2005, at 3:08 PM, michael wrote:
> 
> All, 
> 
> I have a quick network question.  
> 
> I have two boxes on the same subnet connected to the same switch.  When
> I scp a 3.2M file back and forth between them I get wildly different
> transfer rates. 
> 
> A=Linux 2.6.6-rc1
> B=FreeBSD 5.3-RELEASE-p10
> 
> A=>B: 100% 3272KB  55.5KB/s  00:59 
> B=>A: 100% 3272KB   3.2MB/s   00:00
> 
> What could cause that? What data should I collect to help me answer
> that?
> ssh is fairly cpu intensive.  Are you sure there wasn't anything running in
> the background while you were doing the first transfer?  scp is pretty bad
> for measuring throughput, you might want to to try to test throughput using
> http, ftp, or rsh.
> 

or better yet ttcp.

-p

-- 
~~o0OO0o~~
Pete Wright
www.nycbug.org
NYC's *BSD User Group