Direct IO / Buffered IO

https://sort.symantec.com/public/documents/sf/5.0/aix/html/fs_admin/ag_ch_interface_fs4.html Buffered and Direct I/O The VxFS responds with read-ahead for sequential read I/O. This results in buffered I/O. The data is prefetched and retained in buffers, in anticipation of application asking for it. The data buffers are commonly referred to as the VxFS buffer cache. This is the default VxFS behav..

2015.06.02