linux-kernel - Re: [PATCH] NFSv4: Use exponential backoff delay for NFS4

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Date:	Thu, 25 Apr 2013 13:30:58 +0000
From:	"Myklebust, Trond" <Trond.Myklebust@...app.com>
To:	"bfields@...ldses.org" <bfields@...ldses.org>
CC:	David Wysochanski <dwysocha@...hat.com>,
	Dave Chiluk <chiluk@...onical.com>,
	"linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] NFSv4: Use exponential backoff delay for NFS4_ERRDELAY

On Thu, 2013-04-25 at 09:29 -0400, bfields@...ldses.org wrote:

> My position is that we simply have no idea what order of magnitude even
> delay should be.  And that in such a situation exponential backoff such
> as implemented in the synchronous case seems the reasonable default as
> it guarantees at worst doubling the delay while still bounding the
> long-term average frequency of retries.

So we start with a 15 second delay, and then go to 60 seconds?

-- 
Trond Myklebust
Linux NFS client maintainer

NetApp
Trond.Myklebust@...app.com
www.netapp.com
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