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- Path: sparky!uunet!mcsun!news.funet.fi!hydra!klaava!cc.helsinki.fi!jaakola
- From: jaakola@cc.helsinki.fi
- Newsgroups: comp.databases.oracle
- Subject: SQL*Net performance - why this way?
- Message-ID: <1992Sep4.193604.1@cc.helsinki.fi>
- Date: 4 Sep 92 17:36:04 GMT
- Sender: news@klaava.Helsinki.FI (Uutis Ankka)
- Organization: University of Helsinki
- Lines: 54
-
- Dear Netters,
-
- I have done some performance measurements on using Oracle SQL*Forms in
- client/server mode. The client was always a PC (386SX/16MHz to
- 486/50MHz) and was used against a remote database server.
-
- The results were (using SQL*Forms 3.0 and 386SX 16 MHz IBM PS/2 55SX)
-
- Simple query (13 different SQL statement executions)
-
- Time Relative Server/Protocol
- 3.5s 1.00 IBM 3090 VM/XA APPC
- 3.3s 0.94 HP9000/817 HP-UX TCP/IP
- 3.2s 0.91 IBM RS6000 340 AIX TCP/IP
- 2.6s 0.74 IBM PS/2 70 OS/2 1.3 NetBIOS
- 2.6s 0.74 Tricord Novell NetWare SPX/IPX
-
- Complex update
-
- Time Relative Server/Protocol
- 20.9s 1.00 IBM 3090 VM/XA APPC
- 17.5s 0.84 HP9000/817 HP-UX TCP/IP
- 17.2s 0.82 IBM RS6000 340 AIX TCP/IP
- 13.1s 0.63 Tricord Novell NetWare SPX/IPX
-
- Using 486 25 MHz client (Dell 425DE) the results for the complex update were:
-
- Time Relative Server/Protocol
- 14.2s 1.00 IBM 3090 VM/XA APPC
- 6.1s 0.43 IBM RS6000 340 AIX TCP/IP
- 5.5s 0.39 Tricord Novell NetWare SPX/IPX
-
- All tests were performed without other users whenever possible. We used
- 4Mbps Token Ring in all tests. The time was taken when repeating the
- test during the same session (the first timing during a session is about
- 30..50% slower than subsequent timings).
-
- Could anybody explain WHY we got those results: Why SPX/IPX and NetBIOS
- were faster than TCP/IP, particularly on the 386SX?
-
- Are there any parameters which could be tuned to gain better
- performance? We used HP ARPA 2.11 TCP/IP package on the PCs. I tried to
- tune some parameters without any success.
-
- Do the results match any other measurements?
-
- Why 386SX is so much slower than 486 25 MHz?
-
- By the way, the complex update takes about 2 seconds when run on the
- UNIX servers without SQL*Net or using a powerful UNIX workstation as a
- client.
- --
- Juhani Jaakola
- jaakola@cc.helsinki.fi
-