From: Steve Dickson Subject: Re: [PATCH v2] Update nfs(5) manpage - timeo for NFS/TCP Date: Tue, 30 Aug 2011 08:41:26 -0400 Message-ID: <4E5CDA76.7020703@RedHat.com> References: <201108300245.p7U2jN4j011424@ns3.rdu.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: linux-nfs@vger.kernel.org, rees@umich.edu To: Max Matveev Return-path: Received: from mx1.redhat.com ([209.132.183.28]:1033 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752877Ab1H3Mla (ORCPT ); Tue, 30 Aug 2011 08:41:30 -0400 In-Reply-To: <201108300245.p7U2jN4j011424-K5Dt2rfd30Yf7BdofF/totBPR1lH4CV8@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: On 08/04/2011 01:47 AM, Max Matveev wrote: > NFS/TCP does linear backoff then retransmiting - the manpage > was mistakenly asserting the "no backoff" theory. > > Signed-off-by: Max Matveev > Signed-off-by: Jim Rees Committed... steved. > --- > utils/mount/nfs.man | 16 ++++++++++------ > 1 files changed, 10 insertions(+), 6 deletions(-) > > diff --git a/utils/mount/nfs.man b/utils/mount/nfs.man > index be91a25..ff0ed60 100644 > --- a/utils/mount/nfs.man > +++ b/utils/mount/nfs.man > @@ -113,12 +113,16 @@ option may mitigate some of the risks of using the > option. > .TP 1.5i > .BI timeo= n > -The time (in tenths of a second) the NFS client waits for a > -response before it retries an NFS request. If this > -option is not specified, requests are retried every > -60 seconds for NFS over TCP. > -The NFS client does not perform any kind of timeout backoff > -for NFS over TCP. > +The time in deciseconds (tenths of a second) the NFS client waits for a > +response before it retries an NFS request. > +.IP > +For NFS over TCP the default > +.B timeo > +value is 600 (60 seconds). > +The NFS client performs linear backoff: After each retransmission the > +timeout is increased by > +.BR timeo > +up to the maximum of 600 seconds. > .IP > However, for NFS over UDP, the client uses an adaptive > algorithm to estimate an appropriate timeout value for frequently used > -- 1.7.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html