Re: NFS is going down, et al [was: pidfiles aka. Re: [CVS] unix socket support added]

[Jan-Henrik Haukeland]

Christian Hopp <address@hidden> writes:

> The source of the procps tools is more interesting.  And for Solaris
> there is nothing better then proc's man page. By the way, Solaris
> has a really good and developer friendly procfs.
> 
> I have already solaris code working to find out its status
> (cpu+mem+zombie?).  For Linux I just got "zombie?"  working.  Linux's
> proc is a real pain in the ****.  Maybe it's user friendly.  But if
> you wanna read it reliable with C that its awful.  Linux also does not
> provide any possibility to measure the "cpu percentage" of a task
> directly.  So I gonna measure each cycle and calculate the difference
> between the cylces.  Linux uses it's obscure "jiffies".  As far as I
> know right now a jiffie is something between nothing and forever
> (precise "usually 1/100 s except for alpha systems there it is 1/1024
> seconds).  But it's going on.  I gonna try to keep the information to
> a little key values (mem, cpu incl. children, status ->[ zombie,
> stopped, halted, running]).

This is just excellent, great stuff! This may be a big patch so let us
know if you need any help! It would also be great if we could support
FreeBSD, it looks like BSD also use /proc. But we can take that later
when you get the proc status sub-system ready. Can't wait to look at
the code :)

-- 
Jan-Henrik Haukeland