Re: Kernel 2.6.15.1 + NFS is 4 times slower than FTP!?

From: Trond Myklebust
Date: Tue Jan 17 2006 - 19:42:06 EST


On Tue, 2006-01-17 at 18:39 -0500, Lee Revell wrote:
> On Tue, 2006-01-17 at 18:19 -0500, Justin Piszcz wrote:
> > man mount
> >
>
> async is the default for most filesystems but the NFS standard requires
> writes to be synchronous.

On the server side, note. Not the client side. Justin appears to be
looking at the client, whereas you are referring to an export option on
the server.

The client only guarantees that writes must have been committed to disk
on the server when either fsync() or close() have been called.

Cheers,
Trond

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