On Wed, 15 Sep 1999, Ruslan Ermilov wrote:
> > The aio_* stuff (I use a custom patched version in 4.x) offers performance
> > advantages over select() with large numbers of descriptors. In terms of
> > efficiency, I don't have any trouble saturating full-duplex 100mbit link
> > with aio routines on a reasonably fast box (PII-400 512MB).
> >
> > As more work gets done to the aio stuff, there are some potential early
> > advantages available to multiprocessor machines (since the program
> > 'driving' the aio could run concurrently with the kernel code moving
> > network or disk data).
> >
> > -Chris
>
> Do you by any change have an idea how to fix PR kern/13075
> (signal is not posted for async I/O on raw devices)
Yes. There is no code to post the signal unless the job is of the lio
variety. Writing a fix took about 15 minutes (including reboot).
Extensive testing not included, though the test program provided with the
PR now functions.
-Chris
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