Home » Posts tagged "o_async"

O_DIRECT & O_ASYNC, Linux & Perl

I’ve written a C program that creates a 20GB file using O_DIRECT and O_ASYNC correctly. The trick to write to a file using O_DIRECT is that I have to align the buffer with respect to the memory block size. When I write a similar program...

Continue reading »

ASE 15.0.1 esd 2 on Linux with direct i/o woes

If you’re having trouble creating a device file on Linux while using direct io, you’re not alone: disk init name = data01, physname = "/dbms/sybase/data/data01.dat", size = "20G", dsync = false, directio = true 03:00000:00041:2007/05/04 21:20:20.21 kernel Initializing virtual device 4, '/dbms/sybase/data/data01.dat' with dsync 'off'....

Continue reading »

Facebook login by WP-FB-AutoConnect