In article <mailman.1083.1413494517.26362.bind-us...@lists.isc.org>, Shawn Zhou <shawnzho...@yahoo.com> wrote:
> Hello, > While I was investigating potential SYN flooding warning messages on my Linux > box for our DNS traffic,I was very surprised to see the backlog was set to > very small numbers for BIND tcp sockets. > strace showed backlog was '10' for listening socket for port 53 and '128' for > listening socket for port 953 (rdnc traffic). > I've restarted BIND after I updated somaxconn but BIND didn't pick up the > value. > Why doesn't BIND set the backlog to a huge number and let OSes reduce it to > whatever somaxconn is? Or just set backlog to whatever is is set for > somaxconn? Since TCP queries should be infrequent, why does it need a high backlog? It seems like it's already increasing it, IIRC the default is 5. -- Barry Margolin Arlington, MA _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
