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Date:      Fri, 25 Jun 2004 14:43:03 +0300
From:      Danny Braniss <danny@cs.huji.ac.il>
To:        David Malone <dwmalone@maths.tcd.ie>
Cc:        Robert Watson <rwatson@freebsd.org>
Subject:   Re: waiting on sbwait 
Message-ID:  <20040625114314.1371C43D41@mx1.FreeBSD.org>
In-Reply-To: Message from David Malone <dwmalone@maths.tcd.ie>  <20040625105159.GA41051@walton.maths.tcd.ie> 

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> On Fri, Jun 25, 2004 at 09:17:01AM +0300, Danny Braniss wrote:
> > it's definetly NFS related, i/you can cause this to happen at will,
> > ie: ls /net/host where host is down. the /net is a amd trigger which will
> > try and mount via nfs all of host's exports.
> 
> In that case, the "sbwait" is the kernel waiting for the unresponsive
> NFS server (or maybe amd) to reply. There's not much you can do
> about that other than change your amd or nfs configuration to give
> up if the server is unresponsive.
> 
> 	David.

I understand, but the problem is that all access via amd are now stalled, till
the one process failes/times-out. I guess it's because the single thread amd.

danny




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