Enabling Asynchronous Disk I/O

HP-UX users must enable asynchronous I/O. Enabling asynchronous I/O improves I/O performance on character or raw block devices.

Install HP asynchronous I/O driver from the system administration manager (SAM).

For help with installing this driver, contact your operating system administrator or HP technical support.

Note: Before executing these instructions, shut down Replication Server.
  1. Launch the kernel configuration:
    kcweb -F
  2. Select Modules.
  3. Select asyncdsk and change the Next Boot to static.
  4. Rebuild the kernel and restart the system.
  5. Using userid, root, execute: 
    #/etc/mknod/dev/async c 101 4
#chmod 0660/dev/async
#chown uid /dev/async
#/etc/setprivgrp ugrp MLOCK
    where:
    • uid is the user ID who is starting Adaptive Server.
    • ugrp is the group to which the user ID belongs.
Parent topic: Special Installation Instructions