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- Path: sparky!uunet!gatech!usenet.ins.cwru.edu!slc6!trier
- From: trier@slc6.ins.cwru.edu (Stephen C. Trier)
- Newsgroups: comp.protocols.tcp-ip.ibmpc
- Subject: Re: Awful NFS performance!
- Date: 6 Jan 1993 21:47:51 GMT
- Organization: Case Western Reserve University, Cleveland OH (USA)
- Lines: 32
- Message-ID: <1ifk27INNf3l@usenet.INS.CWRU.Edu>
- References: <9301061134.AA14588@ftp.com> <1993Jan06.155323.22866@wes.on.ca>
- NNTP-Posting-Host: slc6.ins.cwru.edu
-
- In article <1993Jan06.155323.22866@wes.on.ca> tomh@wes.on.ca (Tom Haapanen) writes:
- >We're using Wollongong's TCP/IP and NFS, but even after extensive tuning,
- >NFS file copies are waaaay slower than either Netware or FTP.
-
- Keep in mind that standard NFS does not cache writes. All writes
- are synchronous and must hit the disk before the client can continue.
- If you are benchmarking copies from a client to the server, this is
- why they are slow.
-
- NetWare NFS caches writes, which is a violation of the NFS specs.
- It would be interesting to know what happens to benchmarks of NetWare
- vs. NetWare NFS when NFS write caching is turned off on the server.
-
- I think a well-designed benchmark can get around the write caching
- issue. (Larry from FTP's was a good example -- same hardware, same
- underlying OS's, vary only the file system protocols. Don't vary
- write caching.)
-
- When comparing transfers from a server to a DOS client, read caching
- may make the difference. NetWare servers tend to have much larger
- caches.
-
- Beyond that, yes, there are probably performance differences between
- NetWare and NFS, and NetWare is probably slightly faster for MS-DOS.
- I think it's obvious by now that variations between individual client
- and servers are much greater than any protocol performance issues.
-
- --
- Stephen Trier "We want to offer you a price that you
- Network software type just can't afford to take advantage of."
- Case Western Reserve University - Sales blurb from HSC Software
- trier@ins.cwru.edu
-