Date: Thu, 19 Feb 2009 17:25:04 -0700 From: Scott Long <scottl@samsco.org> To: John Baldwin <jhb@FreeBSD.org> Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org Subject: Re: svn commit: r188832 - head/sys/nfsclient Message-ID: <499DF860.8020903@samsco.org> In-Reply-To: <200902192218.n1JMI1HF009245@svn.freebsd.org> References: <200902192218.n1JMI1HF009245@svn.freebsd.org>
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John Baldwin wrote: > Author: jhb > Date: Thu Feb 19 22:18:00 2009 > New Revision: 188832 > URL: http://svn.freebsd.org/changeset/base/188832 > > Log: > When fetching attributes for a file for NFSv3 mounts, do not perform an > opportunistic ACCESS RPC to populate both the access and attribute caches > of the file and instead always use a GETATTR RPC. On many modern NFS > servers, an ACCESS RPC is much more expensive to service than a GETATTR > RPC. > Not too long ago, this was a very useful and important optimization. Can you say which servers this applies to? Could it have been made an option instead of outright deleted? Scott
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