Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!brutus.cs.uiuc.edu!apple!altos!altos86!jon
From: jon@altos86.Altos.COM (Jonathan Ma)
Newsgroups: comp.databases
Subject: Re: Problems With Informix Turbo Engine
Keywords: shared memory, raw disk
Message-ID: <3006@altos86.Altos.COM>
Date: 19 Mar 90 23:02:46 GMT
References: <40651@fmsrl7.UUCP>
Reply-To: jon@altos86.UUCP (Jonathan Ma)
Followup-To: comp.databases
Organization: Altos Computer Systems, San Jose, CA
Lines: 18


I've worked with Informix-Turbo for several years.  About a year ago, we
tried to do performance tuning on the Altos 2000 (i386 20MHz) system.
We tried so many things to speed up the TPS (transaction-per-second)
using the Informix-Turbo engine without much improvement.  As a matter
of fact, for the 2000DP (Dual processor), the spin-wait-lock in shared
memory will slow down the TPS.  

In my openion, Informix-Turbo is pretty solid, utilizing the latest
technology in Unix System V IPC, raw disk, and TCP/IP (for networking).
The new version, Informix-Turbo 4.00, is even better with compiled
commit-work and double buffering.

-- 
-Jon-                Jonathan Ma, Altos Computer Systems
                     Internet: jon@altos.com
                     UUCP: {uunet,sun,amdahl,apple}!altos!jon
Disclaimer:    Those views are mine alone, not my employers'.