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Date: Tue, 1 May 2012 07:00:49 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Peter Jeremy <peterjeremy@acm.org>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: NFS - slow
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i tried nfsv4, tested under FreeBSD over localhost and it is roughly the 
same. am i doing something wrong?

On Mon, 30 Apr 2012, Peter Jeremy wrote:

> On 2012-Apr-27 22:05:42 +0200, Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> wrote:
>> is there any way to speed up NFS server?
> ...
>> - write works terribly. it performs sync on every write IMHO,
>
> You don't mention which NFS server or NFS version you are using but
> for "traditional" NFS, this is by design.  The NFS server is stateless
> and NFS server failures are transparent (other than time-wise) to the
> client.  This means that once the server acknowledges a write, it
> guarantees the client will be able to later retrieve that data, even
> if the server crashes.  This implies that the server needs to do a
> synchronous write to disk before it can return the acknowledgement
> back to the client.
>
> -- 
> Peter Jeremy
>