HEADSUP: KSE about to become a kernel option

[David Xu]

On Friday 27 October 2006 07:33, John Birrell wrote:
> [ replying to myself ]
>
> On Thu, Oct 26, 2006 at 09:33:43PM +0000, John Birrell wrote:
> > If you use a GENERIC kernel, then this change won't affect you
> > because the KSE option will be on by default in GENERIC on
> > all arches/machines except sun4v (which doesn't handle signals
> > properly with the KSE code in the kernel).
>
> scottl persuaded me to add the KSE option to DEFAULTS on all
> arches/machines (except sun4v) to avoid causing the same problem
> that the io/mem change from default to optional caused.
>
> This means that ou will get KSE by default in your kernel (as
> before it was an option) _unless_ you use add 'nooption KSE'
> to your kernel config.
>
> This isn't my preferred solution because it makes it too
> transparent, however scottl's point is that unnecessary grief
> will be caused if the change isn't completely transparent.
>
> Sorry for the confusion.
>
> And BTW, the commits are all in current now...and coming to
> a cvsup server near you.
>
> --
> John Birrell

By compiling kernel without KSE option, super-smack's select-key.smack with
10 clients on Athlon64 dual-core 3800+ breaks 31000 q/s, otherwise it can only 
get 29000 q/s. Mysql version is 5.0.24a, FreeBSD AMD64.

David Xu