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

From: Lee Revell
Date: Thu May 19 2005 - 09:01:10 EST


On Thu, 2005-05-19 at 08:53 -0400, Peter Staubach wrote:
> 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...

Also, how do you explain the big performance hit that steve observed?
Write gathering is supposed to help performance, but it's a big loss on
his test...

Lee

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