Re: AIO vp...

Posted in 1998

Art S. Kagel — Mon, 14 Sep 1998 12:11:50 -0400 — source: Informix-list mailing list archive (1991-1998)

SUNIL S. SINGH wrote: > > Hi all !!! > > I have a little doubt here abt AIO vp. > One of the informix manual says tht IDS uses kernel AIO (kio) I/o method, > ie performing I/O through operating system, if chunk is UNIX raw device > and it relies on AIO vp for performing I/O directly if chunk is UNIX > cooked file. > > How far is it correct ?? > I think it is other way round. No that is correct. By default, on most platforms, RAW device chunks are handled by KAIO threads and COOKED device/file chunks are handled by AIO VPs. Art S. Kagel