Zeugswetter Andreas ADI SD wrote: > > An improvement is going into 2.6.19 to handle asynchronous > > vector reads and writes. This was covered by Linux Weekly > > News a couple of weeks ago: > > http://lwn.net/Articles/201682/ > > That is orthogonal. We don't really need vector io so much, since we > rely on OS readahead. We want asyc IO to tell the OS earlier, that we > will need these random pages, and continue our work in the meantime.
Of course, you can use asynchronous vector write with a single entry in the vector if you want to perform an asynchronous write. -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
