Has anyone played with speeding up I/O transfers?

[Gregory R. Travis]

In response to <750 at reed> - yes.  Here at Isrnix on our 11/44 we have
more than doubled the speed at which kernel/user copies take place
by writing routines that map kernel space into user space and use
'mov' instructions.  I too was bothered by the amount of time spent
copying buffers.  We are planning a 'release' of the (long-awaited)
Isrnix system sometime in mid-january.  This release will be available to
all 2.9BSD license holders for the cost of a tape, shipping and administrative
overhead (probably ~$40).  There will be a general announcement of
availability to the 2BSD mailing list in January and a minor one in
net.unix.  Write to me if you are interested or want to know what will
be included.
Gregory Travis
Institute of Social Research
Bloomington, In  47405
(812)-335-0892
ihnp4!inuxc!isrnix!greg
pur-ee!isrnix!greg
-- 
    Gregory R. Travis
    Institute for Social Research - Indiana University - Bloomington, In
    ihnp4!inuxc!isrnix!greg
    {pur-ee,allegra,qusavx}!isrnix!greg