Date: Mon, 10 May 1999 20:09:43 +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.4.05.9905102002340.447-100000@herring.nlsystems.com> In-Reply-To: <Pine.BSF.4.05.9905102128080.5643-100000@crydee.sai.msu.ru>
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On Mon, 10 May 1999, Sergey Ayukov (mailing lists) wrote: > On Mon, 10 May 1999, Doug Rabson wrote: > > > > It all depends on the value which you place on the data which the clients > > are writing. > > Yes, sure. In ideal case, I would love to mount some directories with less > reliable settings and some with more reliable... This reminds me about > ages long discussion on whether writes should be cached at all (it was > thriving when DOS Smartdrive finally got an option to enable write > caching). My opinion is that they should be cached. After all, it is > impossible to get good performance out of NFSv2 when not doing write > caching. Whether you will rely on UPS or just pray for data to be safe is > another question. 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. > > Could I have a copy of your test program? The 100Mbit performance ought to > > be better than this. > > Test program is File Commander for OS/2, available from many places, e.g. > ftp://hobbes.nmsu.edu/pub/incoming/fc2_210.zip 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. > > I would have thought the OS/2 client could use SMB. I thought the > > performance of samba was pretty good on FreeBSD. Perhaps it could be tuned > > a bit (samba has a boatload of tuning parameters). > > I don't know why I am having such a bad luck with FreeBSD, but I am only > getting about 300KB/s on writes over 10MBit network while exchange between > Windoze machines yields about 900KB/s. Someday I will try SMB client on > OS/2, but I was pretty happy with NFS -- until I switched to FreeBSD. Try reading the Samba documentation (in the docs/textdocs subdirectory of the samba source code). -- 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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