Date: Fri, 14 Oct 2005 13:23:48 -0400 From: Jim Rees <rees@umich.edu> To: rick@snowhite.cis.uoguelph.ca Cc: fs@freebsd.org Subject: Re: FreeBSD NFS server not responding to TCP SYN packets from Linux/SunOS clients Message-ID: <20051014172348.46B291BBE6@citi.umich.edu> In-Reply-To: rick@snowhite.cis.uoguelph.ca, Fri, 14 Oct 2005 12:55:49 EDT
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Tcp always throws away retransmissions. Doesn't matter whether the data is still in the receive socket queue or not. The nfs server will never see replayed requests as a result of tcp retransmission. The problem is "how do you make sure the nfsd threads don't start a request if the disk I/O subsystem is backlogged". Isn't this simply a matter of choosing the right number of nfsd threads?
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