Re: Very slow response for `eject cd0' command

[Jukka Salmi <j+nbsd%2009.salmi.ch@localhost>]

Nicolas Joly --> current-users (2009-09-01 14:06:55 +0200):
> On Tue, Sep 01, 2009 at 12:54:43PM +0100, Iain Hibbert wrote:
> > On Tue, 1 Sep 2009, Nicolas Joly wrote:
> > 
> > > I do see the problem on at least 3 of my amd64 machines where `eject
> > > cd0' takes about 4 min to succeed ... Result does not change if there
> > > is a disk in the drive.
> > > [...]
> > > Anyone else ?
> > 
> > yes, running 5.99.15 with i386 (dual core)
> > 
> >   galant: {3} time eject cd0
> >   0.0u 0.0s 4:00.89 0.0% 0+0k 1+0io 0pf+0w
> >   galant: {4} /usr/bin/time eject cd0
> >         240.66 real         0.00 user         0.00 sys
> > 
> > it seems to spend its time in select() according to top but I don't see
> > any select in the source. I also see this on the console just before it
> > does eject
> 
> A further look show that problems comes from amd(8) support for this
> command... Recompiling it with `AMD_SUPPORT=no' make it works fast
> again.

As does passing the -f option to an eject(1) built with AMD_SUPPORT=yes?
It's problem [1]this problem.  Christos has a patch for it; not sure if
it is correct though, but it seems to work.


Regards, Jukka

[1] http://mail-index.netbsd.org/current-users/2009/05/21/msg009513.html

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