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Re: [Linux-cluster] fs.sh?



On Thu, Aug 02, 2007 at 11:48:19AM -0400, Lon Hohberger wrote:
> On Tue, Jul 31, 2007 at 05:54:41PM +0300, Janne Peltonen wrote:
> > 
> > I did the same, with the same results. It seems to me that the clurgmgrd
> > process isn't calling the complete script any more times than it's
> > supposed to.  What I'm seeing are the execs of fs.sh, that is, it
> > includes each () and `` and so on. Each fs.sh invocation seems to create
> > quite an amount of subshells.
> > 
> > I'm sorry for having misled you. And this all means, there isn't
> > probably much reason to read the cluster.conf and rg_test rules output -
> > I'll attach them anyway.
> 
> Yeah, it does hit a lot of subshells.  Awks, seds, and the like.  Some
> pattern substitution and matching can be done in pure bash.

Perhaps a *lot* more than you likely think...

Sadly, this is the common case.  Probably 99.99% of all shell scripts
that I see are still Bourne scripts or very close to it.  The bash shell
is SO MUCH more powerful than Bourne, but it gets used in such a clumsy
and trivial manner that wastes far too many processes and far too many
cycles.

And yes, I have submitted patches when the abuse was truly egregious,
but such updates are universally ignored as there is no actual error to
point to.

Sigh...

-- 
David N. Lombard, Intel, Irvine, CA
I do not speak for Intel Corporation; all comments are strictly my own.


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