On Thu, Apr 18, 2013 at 6:04 PM, Florian Weimer <f...@deneb.enyo.de> wrote: > The TCP checksum is too weak to be practical. Every now an then, I > see data transfers where the checksum is valid, but the content > contains bit flips.
Well of course, it's only a 16-bit checksum. 64k packets isn't very many so if you're not counting checksum failures it won't take very long before one gets through. The purpose of the checksum is to notify you that you have a problem, not to block bad packets from getting through. > Anything that flips bits randomly at intervals > which are multiples of 16 bits is quite likely to pass through > checksum detection. I'm not sure about this -- greg -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers