HEADS UP: SACK committed to HEAD

Jon Noack noackjr at alumni.rice.edu
Thu Jun 24 17:13:04 PDT 2004

On 06/24/04 18:46, Wilkinson, Alex wrote:
> erm .... what is SACK ? I'm assuming ACK is 'acknowledgment ?
> Quick summary anyone ?

Selective ACKnowledgment (for TCP):

SACK is needed to get decent throughput over high-delay, lossy 
connections (like international links).

Jon Noack

P.S. A google search for "sack acknowledgment" would have given you 
those links as the first hit.  Search engines are your friend.  Part of 
mailing list etiquette is making an attempt to find information for 

More information about the freebsd-current mailing list