Re: [PATCH 0 of 5] knfsd: miscellaneous performance-related fixes

[Greg Banks <gnb@melbourne.sgi.com>]

On Wed, 2006-08-09 at 01:49, J. Bruce Fields wrote:
> On Tue, Aug 08, 2006 at 08:22:44PM +1000, Greg Banks wrote:
> > I'm still working on another patch (it only recently became possible
> > with the ktime_t code) which replaces threadstats fully.  That patch
> > adds nanosecond resolution busy and idle counters to each thread,
> > then aggregates them per-pool when you read the pool_stats file.
> > After export to userspace and rate conversion, these numbers tell
> > us directly what percentage of the nfsds are currently being used.
> 
> Would it be possible to use that to continue to support the existing
> interface (the "th" line)?

No, the formats are really quite different.

> It'd be nice if we could avoid ripping out a working user interface that
> someone might be using....

I agree, but I don't believe a) it's working or b) anyone could
be getting any use out of it.

An earlier version of the patch left the data structures in place
and just reported them as zeros in the /proc file.  Would that
be preferrable?

Greg.
-- 
Greg Banks, R&D Software Engineer, SGI Australian Software Group.
I don't speak for SGI.



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