[geeks] Network Slowness

Sridhar Ayengar ploopster at gmail.com
Thu May 24 15:56:51 CDT 2007


Caleb Shay 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[0].  It's not network overhead, it's CPU time overhead.
> 
> [0] http://www.psc.edu/networking/projects/hpn-ssh/

I'm going to try this code.  This shit is pissing me off.

Peace...  Sridhar



More information about the geeks mailing list