On Fri, Sep 26, 2014 at 10:31:25PM +0100, David Laight wrote: > IIRC is does a synchronous IO in a worker thread. > There are a varey limited number of such threads, so you can't > really do aio at all. In the meantime I wrote a middleware to offer Linux libaio API using NetBSD librt: http://ftp.espci.fr/shadow/manu/libaio-netbsd.tgz It passes almost all Linux libaio regression tests. I am not sure where it should go now. -- Emmanuel Dreyfus manu%netbsd.org@localhost