Re: why nfs server delay 10ms in nfsd_write()?

[Peter Staubach <staubach@redhat.com>]

Trond Myklebust wrote:

> to den 19.05.2005 Klokka 08:53 (-0400) skreiv Peter Staubach:
>  
>
> > There are certainly many others way to get gathering, without adding an
> > artificial delay.  There are already delay slots built into the code 
> > which could
> > be used to trigger the gathering, so with a little bit different 
> > architecture, the
> > performance increases could be achieved.
> >
> > Some implementations actually do write gathering with NFSv3, even.  Is
> > this interesting enough to play with?  I suspect that just doing the 
> > work for
> > NFSv2 is not...
> >    
>
> Write gathering does still apply to stable NFSv3/v4 writes, so an
> optimisation may yet benefit applications that use O_DIRECT writes, or
> that require the use of the "noac" or "sync" mount options.
>
> I'm not aware of any ongoing projects to work on this, though, so it
> would probably be up to those parties that see it as beneficial to step
> up to the plate.

Cool.  If anyone is interested, I would be interested in participating 
in a design
discussion and perhaps even prototyping.

   Thanx...

      ps
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/