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- Newsgroups: comp.os.os2.networking
- Path: sparky!uunet!srvr1.engin.umich.edu!batcomputer!ghost.dsi.unimi.it!ipgaix!dedalo.unipg.it!luca
- From: luca@dedalo.unipg.it (Luca Priorelli)
- Subject: IBM NFS performance (too bad!)
- Message-ID: <1993Jan21.180618.120415@ipgaix.unipg.it>
- Sender: news@ipgaix.unipg.it (News Distribution System/9999999)
- Nntp-Posting-Host: dedalo.unipg.it
- Organization: Universita' di Perugia
- Date: Thu, 21 Jan 1993 18:06:18 GMT
- Lines: 54
-
- Every once in a while I get upset of the poor performance of
- IBM NFS and hope that new CSDs would solve the problem.
- Instead... no way.
-
- I have just applied the latest CSD found in hobbes and:
-
- - I can now mount an exported OS/2 directory from a SPARCstation
- (before I couldn't) but when I try to copy a file from the
- Sun to the OS/2 (running on a PS/2 95), well... it takes about 11 minutes
- to copy a 2Mbytes file!!!
-
- - Emacs does not work yet.
-
- And here are some timings copying a 2Mbytes file:
-
- machine type
- A ps/2 40 386sx 20Mhz
- B ps/2 80 386dx 20Mhz
- C ps/2 95 486dx 33Mhz
- D SPARCstation 33Mhz
-
- A --> C (write) 39"
- A <-- C (read) 49" (this is the first time a see a NFS read taking
- more than a write)
-
- A --> D 35"
- A <-- D 1'05" (??? more than above!)
-
- B --> D 35"
- B <-- D 20" (well, sounds better!)
-
- C --> D 26"
- C <-- D 6" (not bad)
-
- D --> C 11'10" (??? this must be a BIG BUG)
- D <-- C 2" (I cannot believe this!)
-
- Well, can you find any sense from these figures?
-
- Why D reads in 6" and A in 1'05"? OK it is a faster machine but this cannot
- explain the difference. Moreover, it takes more to read than to write!
- B which is almost the same speed does much better.
-
- The ethernet adapter? 3C509 for A and 3C525 for B and C. 3C509 is
- advertized as a very fast one (or it isn't?). The counterproof is
- easy. I have installed LAN server 3.0 on C and LAN requester on A.
- Well, I cannot tell the difference between a local disk and the remote
- disk from C.
-
- Why IBM NFS is so bad?
-
- Luca Priorelli
-
-
-