posix

In a new post to his blog Brian Moon describes a need he had for detecting if the client or user calling a PHP script was using an interactive terminal (TTY) or not:

POSIX IO is becoming a serious impediment to IO performance and scaling. POSIX is one of the standards that enabled portable programs and POSIX IO is the portion of the standard surrounding IO.

But as the world of storage evolves with greatly increasing capacities and greatly increasing performance, it is time for POSIX IO to evolve or die.

LWN.net: "Sure, programmers (especially operating systems programmers) love their specifications. Clean, well-defined interfaces are a key element of scalable software development.

But what is it about file systems, POSIX, and when file data is guaranteed to hit permanent storage that brings out the POSIX fundamentalist in all of us?"

Linux Dynasty: "In the last HowTo, I showed you how to setup GFS2 file system with Red Hat Clustering. I will now show you how to optimize the performance of your GFS2 mounts.

The gfs_controld daemon manages the mounting, unmounting, and the recovery of the GFS2 mounts. gfs_controld also manages the posix lock."