Subject: Re: some kernel questions
To: haad <firstname.lastname@example.org>
From: Bill Studenmund <email@example.com>
Date: 11/14/2005 16:42:43
Content-Type: text/plain; charset=us-ascii
On Tue, Nov 15, 2005 at 12:08:17AM +0100, haad wrote:
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> Hi list I have some questions I don't know if this is correct list for
> my questions.
> I look at new freebsd 6 features and found that they implement
> something like
> ibm_acpi. Acpi functions for Ibm notebooks.
> can we port it to our ACPI code or not ??
> We still use Giant Lock ??
> "Fine-grained locking to allow much of the VFS stack to run without the
> Giant lock has been added."
> Sometime ago i have seen some benchmarks with
> Linux & freebsd and Netbsd had very poor performance with SMP machine.
> Our SMP performance was worst than on single processor machine.
Depends on what you're doing. If your application spends most (almost=20
all?) of its time in userland, then our SMP will be useful.=20
If however you are spending a lot of time in the kernel, then yes, our SMP=
isn't very helpful.
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