Index for Section 2

Alphabetical listing for A

Bottom of page

async_daemon(2)
NAME
  async_daemon - Creates a local NFS asynchronous I/O server

SYNOPSIS
  async_daemon(
	  unsigned long iod_num,
	  unsigned long magic);

PARAMETERS
  iod_num
      Specifies the number of I/O threads to run.

  magic
      For Tru64 UNIX, this is 950410.  If a different value is used, seven
      NFS I/O threads are run.

DESCRIPTION
  The use of the async_daemon() function is not supported in customer
  applications, and the interface is subject to change without notice.	It is
  intended for use solely by nfsiod(8).

  The async_daemon() function starts iod_num NFS I/O kernel threads that are
  used to improve NFS I/O performance.	This function does not return to the
  caller, but remains in the kernel to provide additional support for NFS
  over TCP.

RETURN VALUES
  The async_daemon function has no successful return.  In fact, it frees the
  text and data segments associated with the calling program so there is
  nothing to return to.	 When interrupted by a KILL signal, the I/O threads
  are terminated and the process exits.	 If the async_daemon function
  encounters errors, , -1 is returned and errno is set to indicate the error.

ERRORS
  If the async_daemon() function fails, errno may be set to the following
  value:

  [EBUSY]   The async_daemon function has already been called by another
	    process.

  [EPERM]   The caller is not the superuser.

  [EINVAL]  More than 64 I/O threads were requested.

  [ENOMEM]  The kernel memory allocator has no memory.



RELATED INFORMATION
  Functions: nfssvc(2)

  Commands: nfsiod(8)

Index for Section 2

Alphabetical listing for A

Top of page