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	Mon, 09 Jan 2006 23:59:10 PST
Date: Mon, 9 Jan 2006 23:59:10 -0800 (PST)
From: kamal kc <kamal_ckk@yahoo.com>
To: freebsd <freebsd-hackers@freebsd.org>
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Subject: Re: using get_system_info() - obtaining system load averages
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--- Dan Nelson <dnelson@allantgroup.com> wrote:

> In the last episode (Jan 09), kamal kc said:
> > dear everybody,
> > 
> > i want to use the routine get_system_info() to get
> the load averages
> > of the cpu. i found it that top uses it.
> 
> get_system_info is just a function /in/ top itself
> that gets the CPU
> usage.  It uses the vm.loadavg sysctl to get the
> load average.  A
> simpler way is to just call the getloadavg()
> function; see its manpage
> for more info.

thanks i tried getloadavg() it worked.

but when i tried to put it in the kernel the kernel
 failed to link. 

i also looked at sysctl(3) and i guess it is also for
user 
based programs.

so i looked at the sys/sysctl.h and found that there
was
sysctl_find_oid() that was defined for kernel. but i
don't 
know how to use it. i could not get any info on the
web.

the function declaration was ::

int sysctl_find_oid(int *name, u_int namelen, struct
sysctl_oid **noid,
	int *nindx, struct sysctl_req *req);

isn't it the function i should be using to retrieve
the sysctl 
value ???
how should i use it ??

any demo on using it would be immensely helpful for
me.

thanks, 

kamal








		
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