[freenet-dev] [freenet-cvs] r11679 - in trunk/apps/load-balancing-sims/phase7/sim: . clients messages

[Matthew Toseland]

On Fri, Feb 09, 2007 at 08:08:27AM +0000, Michael Rogers wrote:
> Matthew Toseland wrote:
> > Simulations maybe?
> 
> You could find simulation parameters (link speed, latency, reordering) 
> where less than 5% of the retransmissions would be unnecessary, and 
> other parameters where more than 5% would be unnecessary. Without an 
> adaptive mechanism it's hard to know which parameters are realistic. 
> That's why the reordering paper threw me for a loop - I'd assumed we 
> could just pick a single realistic value, but some links seem to reorder 
> much more than others.
> 
> > What exactly does TCP do? I thought it combined ack's with data in order
> > to minimize overhead.
> 
> Right - data will be piggybacked on an ack if there's any data waiting 
> (and the same's true for the current simulation code). But if there's no 
> data waiting the ack will be sent on its own.

I thought TCP acked an entire window at once, not individual packets?
> 
> Cheers,
> Michael
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: Digital signature
Url : http://emu.freenetproject.org/pipermail/devl/attachments/20070209/e91c6179/attachment.pgp