[geeks] Network Slowness
caleb at webninja.com
Thu May 24 11:39:03 CDT 2007
On 5/24/07, Sridhar Ayengar <ploopster at gmail.com> wrote:
> Caleb Shay wrote:
> > On 5/24/07, Sridhar Ayengar <ploopster at gmail.com> wrote:
> >> Patrick Giagnocavo wrote:
> >>> What protocol are you using for transfers? SSH? FTP?
> >> OpenSSH SFTP using Blowfish ciphers.
> > SSH has a massive overhead in processing, data size, and checksumming,
> > you can't use that for your testing. For raw throughput, use
> > something like netcat
> Massive enough to slow a 1000Mbps connection to below 50Mbps? No way.
Yes way. That is why there are high-performance-networking patches
for openssh. It's not network overhead, it's CPU time overhead.
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