Too many open files (not only BIND 9.5.0-P1)

[Stacey Jonathan Marshall]

JINMEI Tatuya / ???? wrote:
> At 09 Jul 2008 21:44:47 +0100,
> Chris Thompson <cet1 at hermes.cam.ac.uk> wrote:
>  
>   
>> I have observed two occurrences of this with BIND 9.4.2-P1 running under 
>> Solaris 10_x86 even though plimit(1) clearly shows the named process 
>> has both soft and hard limits on file descriptors set to 65536:
>>
>> Jul  9 20:29:09 recdns0.csx.cam.ac.uk named[18018]: [ID 873579 local7.error] 
>>  general: error: socket: too many open file descriptors
>> Jul  9 20:29:25 recdns0.csx.cam.ac.uk last message repeated 758 times
>>
>> # plimit 18018
>> 18018:  /usr/local/BIND/bind/sbin/named -u namesrvr -c ../etc/named.conf
>>    resource              current         maximum
>> [...]
>>   nofiles(descriptors)  65536           65536
>>     
>
> What's the value of FD_SETSIZE?  Someone else reported that there's a
> system that has FD_SETSIZE defaulting to 256.
>
> I'd also like to know that how many sockets were actually opened when
> you saw the 'too many open file descriptors' errors.
>
> ---
> JINMEI, Tatuya
>
>   
/include/sys/types.h has it set to 256 under Solaris. That does appear 
to be the value that lib/isc/unix/socket.c would use.

Stace