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