High Performance SSH/SCP - HPN-SSH when?

Corinna Vinschen vinschen at redhat.com
Wed Apr 12 20:19:00 EST 2006


Hi Darren,

On Apr  5 13:03, Corinna Vinschen wrote:
> On Apr  5 12:36, Darren Tucker wrote:
> > To Corinna's question about buffer sizes: I personally would have no
> > objection to making it 64k, possibly with a #define for making it
> > smaller for folks targeting old/embedded systems and such.  I suspect it
> > would be a minor performance gain on most platforms.
> > 
> > If a similar bottleneck applies to pipe/socketpairs, it may also be work
> > increasing the IO buffer in scp and seeing if that helps your
> > performance (the HPN patch bumps it from 2k to 16k, you may want to bump
> > it to 64k).
> 
> Thanks for the hint, I'll give it a try next week.

I just tried it and it doesn't have any noticable influence, so only
the network connection is the bottleneck, apparently.


Corinna

-- 
Corinna Vinschen
Cygwin Project Co-Leader
Red Hat




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