Hi there.

I built bind 9.10-0-P2 on solaris 10 sparc, using studio compiler 12.3

I selected use_tuning=large just for fun.

Build worked ok, but at runtime I get these messages in the log.

Sep  3 09:45:40 sif1.its.uow.edu.au named[5461]: [ID 873579 syslog.error] socket.c:2786: unexpected error:
Sep  3 09:45:40 sif1.its.uow.edu.au named[5461]: [ID 873579 syslog.error] setsockopt(560, SO_RCVBUF, 16777216) failed: No buffer space available
Sep  3 09:45:41 sif1.its.uow.edu.au named[5461]: [ID 873579 syslog.error] socket.c:2786: unexpected error:
Sep  3 09:45:41 sif1.its.uow.edu.au named[5461]: [ID 873579 syslog.error] setsockopt(560, SO_RCVBUF, 16777216) failed: No buffer space available
Sep  3 09:45:41 sif1.its.uow.edu.au named[5461]: [ID 873579 syslog.error] socket.c:2786: unexpected error:
Sep  3 09:45:41 sif1.its.uow.edu.au named[5461]: [ID 873579 syslog.error] setsockopt(560, SO_RCVBUF, 16777216) failed: No buffer space available

It looks like the setting of RCVBUFSIZE in lib/isc/unix/socket.c is a bit excessive.

/*%
 * The size to raise the receive buffer to (from BIND 8).
 */
#ifdef TUNE_LARGE
#define RCVBUFSIZE (16*1024*1024)
#else
#define RCVBUFSIZE (32*1024)
#endif /* TUNE_LARGE */

Increasing it by a factor of 500 seems a tad overkill and seems to cause problems
on solaris. Could I suggest a factor of 8-32 might be a better idea.

Actually, given the increasing size of DNS answers, maybe increasing the default
would be a good idea as well.

Anyway, just thought you would like to know. I am rebuilding without use_tuning.

Keep up the good work.

Regards,
pdg

Peter Gray				Ph (direct): +61 2 4221 3770
Information Technology Services		Ph (switch): +61 2 4221 3555
University of Wollongong		Fax: +61 2 4229 1958
Wollongong NSW 2522			Email: pdg@uow.edu.au
Australia				URL: http://pdg.uow.edu.au