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- Path: sparky!uunet!think.com!ames!sun-barr!olivea!charnel!garlick
- From: garlick@ecst.csuchico.edu (Jim Garlick)
- Newsgroups: comp.sys.hp
- Subject: fddi on hp730, nfs performance
- Message-ID: <1ht1giINNen@charnel.ecst.csuchico.edu>
- Date: 30 Dec 92 20:40:50 GMT
- Organization: California State University, Chico
- Lines: 45
- NNTP-Posting-Host: pitbull.ecst.csuchico.edu
-
- Has anybody compared NFS perfomance between hp730's via FDDI versus Ethernet?
-
- We have a group of hp730's acting as servers for some X terminals. All user
- accounts reside on one 730 and are NFS mounted to the other 730's.
-
- The config is something like:
-
- 730 730 730 xterm xterm xterm
- | | | | | ... |
- |________|_________|______________|_____|________|__________________
- |
- |
- 730 730-----user disk xterm xterm xterm router
- | | | | ... | | |
- |________|________________________|_____|________|_________________| |
- |
- |
- 750 xterm xterm xterm |
- | | | ... | |
- |_________________________________|_____|________|____________________|
-
- It is quite a bit slower to access a file via NFS than from the local disk
- (timex cat hp-ux >/dev/null takes 0.09s of real time locally, versus 2.27s
- via NFS).
-
- I thought if we could add FDDI interfaces to all the 730's and put them in a
- ring that runs around our machine room (where they are all located), we could
- keep our homogeneous filesystem and reduce the NFS latency between servers,
- plus provide a backup route between subnets and reduce X traffic through the
- router.
-
- My questions are
- 1. Is NFS between 730's significantly speeded up on FDDI?
- 2. Is there a faster file sharing protocol available for HP's which could
- be used on the FDDI network (i.e. NS, RFS)?
- 3. since the 730's are physically near each other, is there an interface
- available that's faster and/or cheaper than FDDI?
-
- Thanks!
-
- Please respond via email.
-
- Jim Garlick
- CSU Chico
- garlick@ecst.csuchico.edu
-