Date: Tue, 11 May 1999 20:14:05 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: "Sergey Ayukov (mailing lists)" <asv1@crydee.sai.msu.ru> Cc: stable@FreeBSD.ORG Subject: Re: NFS question.. Message-ID: <Pine.BSF.4.05.9905112011220.385-100000@herring.nlsystems.com> In-Reply-To: <Pine.BSF.4.05.9905111941590.10169-100000@crydee.sai.msu.ru>
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On Tue, 11 May 1999, Sergey Ayukov (mailing lists) wrote: > On Mon, 10 May 1999, Doug Rabson wrote: > > The data is cached (subsequent reads will come from the cache). I don't > > expect FreeBSD's defaults to change on this since it does violate the spec > > and a much better (safer) fix is to use NFSv3. > > There are cases when NFSv3 is simply not an option (can't upgrade > clients). IMHO, the filesystem which does fflush() after each write() > (effectively, this is a requirement for NFSv2) is seriously broken in > design. I agree there. I'm still not changing the default though since its not my data which would be risked. It has to be a decision made by the individual admin (it would be nice to have better documentation though). > > Hmm. Not too useful to me since I don't run OS/2. I wonder what sized > > requests are made by the OS/2 NFS client. That can affect performance > > considerably. Without knowing the pattern of NFS calls the test makes, it > > is impossible to speculate on what is causing the performance loss. > > The problem has been solved! (see my other message). Answer: > sysctl -w vfs.nfs.gatherdelay=0 Excellent. > > Try reading the Samba documentation (in the docs/textdocs subdirectory of > > the samba source code). > > Samba started to perform reasonably well (870KB/s on write via 10MBit/s) > after "sysctl -w net.inet.tcp.delayed_ack=0". I wonder why an option in > the smb.conf had no effect. I'm sure I managed to get samba to use TCP_NODELAY with an option. Its been a while since I had to tune a samba installation. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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