From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Fri, 15 Aug 1997 10:48:44 -0700
From: Dan Clark dlc@ncube.com
Subject: [9fans] plan9 extensions
Topicbox-Message-UUID: 5ed5b216-eac8-11e9-9e20-41e7f4b1d025
Message-ID: <19970815174844.7DhlsmAgGXNONurZDCmO6spUPm-80C1Yc4aeqRsb-JI@z>

The synchronous copy everything model in plan9 might be extended for
performance reasons to include such primitives as asynchronous i/o and
pre-formatted vector read/write operations.  Has any thought been given
in the plan9 community as to a generic interface for asynchronous i/o?
Although it is trivial to implement efficient asynchronous i/o in a particular
driver perhaps it would be best to have a generic interface for all i/o,
including communications and scsi subsystems.  Some measurements indicate
that utilizing light weight processes for achieving asynchronous behavior
may not have the desired performance characteristics.

Has Brazil (or any future development) at Lucent given any thought to this
matter?  Your insights and suggestions are most welcome.
danc
Dan L. Clark       dlc@ncube.com    503/531-6432
nCUBE, 1825 NW 167th Place, Beaverton, OR  97006