03-18-2012
18-Mar-2012 14:25:03.209 general: error: socket: file descriptor exceeds limit (4096/4096)
I have BIND 9.8.1-P1 cache only DNS server running in Solaris 10. I have upgraded the same from 9.6.1 to 9.8.1-P1. Now i am facing "file descriptor exceeds limit (4096/4096)" error frequently on the server.
Please help me on this issue!
Last edited by DukeNuke2; 03-18-2012 at 01:52 PM..
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MMAP2(2) Linux Programmer's Manual MMAP2(2)
NAME
mmap2 - map files or devices into memory
SYNOPSIS
#include <sys/mman.h>
void *mmap2(void *addr, size_t length, int prot,
int flags, int fd, off_t pgoffset);
DESCRIPTION
The mmap2() system call operates in exactly the same way as mmap(2), except that the final argument specifies the offset into the file in
4096-byte units (instead of bytes, as is done by mmap(2)). This enables applications that use a 32-bit off_t to map large files (up to
2^44 bytes).
RETURN VALUE
On success, mmap2() returns a pointer to the mapped area. On error -1 is returned and errno is set appropriately.
ERRORS
EFAULT Problem with getting the data from userspace.
EINVAL (Various platforms where the page size is not 4096 bytes.) offset * 4096 is not a multiple of the system page size.
mmap2() can return any of the same errors as mmap(2).
VERSIONS
mmap2() is available since Linux 2.3.31.
CONFORMING TO
This system call is Linux-specific.
NOTES
Nowadays, the glibc mmap() wrapper function invokes this system call rather than the mmap(2) system call.
On ia64, the unit for offset is actually the system page size, rather than 4096 bytes.
SEE ALSO
getpagesize(2), mmap(2), mremap(2), msync(2), shm_open(3)
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2008-04-22 MMAP2(2)