Solaris 2.x compat. system accounting, sarcheck for fbsd (commercial)

[Andreas Klemm]

On Fri, Apr 11, 2003 at 06:01:03PM +1000, Peter Jeremy wrote:
> On Fri, Apr 11, 2003 at 08:08:23AM +0200, Andreas Klemm wrote:
> >I wrote some performance monitoring utilities and need for
> >example a parameter wait for I/O, that I didn't find in our
> >tools, did I overlook something ?
> 
> "wait for I/O" is a System-V state that BSD doesn't measure.
> One of the grey[er] beards may be able to answer why SysV does
> and BSD doesn't consider "wait for I/O" a state worth measuring.

Would be interested to hear why, since I think its an interesting
parameter. At least I know of some sun consultants who are the
opineon, that this is an important parameter.

If I understood the parameter right it should bring you a 
value, who measures how often (in percentage) the CPU had
to wait for I/O operations. Not only disk, additionally
network I/O as well (from hearsay) but Im not 100% sure about
it. So theoretically it should bring to you a value, if you
are I/O bound. Togehter with other values (disk I/O and Network
stats it should be easy to see, if you have a problem with your
disks or with your network).

BTW, are there some automatic tools around for BSD, that 
automate the process of telling you, where you have problems
with your machine or what kernel parameters need an update ??

	Andreas ///

-- 
Andreas Klemm - Powered by FreeBSD 4.7
Need a magic printfilter today ? -> http://www.apsfilter.org/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 187 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-hackers/attachments/20030411/aad73938/attachment.bin