Subject: Re: some kernel questions
To: None <>
From: Christos Zoulas <>
List: tech-kern
Date: 11/15/2005 01:14:51
In article <>, haad  <> wrote:
>Hash: SHA1
>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 ??

Yes we can

>"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.

This is due to out PTHREAD_CONCURRENCY setting to 1; higher settings don't
work correctly right now.

>We still use Giant Lock ??


>I am only kernel beginner but if I can I want help NetBSD.
>  For start I probably need some pretty easy work to learn very much
>  about NetBSD kernel internals.Is here something like this or not??

Look in /usr/src/doc/ROADMAP for things that need to be done. If you have
an ibm laptop, you might start by porting ibm_acpi.