HP-UX File System

For the HP-UX 11i v3 file system, install the PHKL_41700 patch to have access to the select(2) system call enhancement.

The select(2) code was modified to use the high resolution timer functionality. Applications which use select(2) and specify small timeouts will timeout right after the specified duration and this reduces the long wait time. With this higher resolution, the timer API interfaces can support time intervals less than the current 10 ms. The hires_timeout_enable parameter changes take effect immediately, the change can be done while the server is up and running.


  1. Install the PHKL_41700 patch.
  2. Enable the hires_timeout_enable kernel parameter.

    kctune hires_timeout_enable=1

Last modified: 8/10/2018 3:28:22 PM