Feeds

It was Microsoft wot done it

What did happen to that Bloor Report?

  • alert
  • submit to reddit

Maximizing your infrastructure through virtualization

Database myths and legends (Part 9) In this series we're looking at the myths and legends of the database world - some are true, some false. The myth under the spotlight today is: Bloor Research once produced a report that slammed SQL Server so much that Microsoft had it suppressed.

OK, let's start at the top. Bloor Research is a highly respectable analyst company. Has it ever looked at scalability in database engines? A quick Google of the words "Bloor Scalability Database" produces over 40,000 hits and simply following a couple of links will convince you that, of course, the company has done so. This kind of report is meat and drink to Bloor.

Now try and find a reference to the highly critical one. I'll give you two clues.

  1. It did exist.
  2. It was published in March 1997.

It's hard to find any references to it. In fact, only by knowing, and searching for, the actual title of the report, The Realities of Scalability, was I able to turn up two references to it: here and here.

Both are contemporary news pieces, published shortly after it appeared. It seems very likely that these originally appeared in print and have subsequently migrated to the web as archive material.

So the report clearly did exist, indeed rumour has it that certain copies are still extant...

Bloor Research's supressed report

The 'supressed' Bloor report

It is still, today, a very impressive body of work. Over 130 detailed pages of complex tests that really put three database engines: DB2 on AIX, DB2 on WindowsNT, and Microsoft SQL Server 6.5 on WindowsNT, through the wringer.

Bloor tested the databases' performance under read-only and update conditions, varied the number of users and the number of processors. Finally, and unusually, Bloor actually performed statistical analysis on the results to verify whether the differences were significant.

It is also undeniable that the report is highly critical of SQL Server 6.5.

The summary says, for example, of the user scalability: "Put simply, Microsoft SQL Server for Windows NT at high numbers of users performs dramatically worse than either of the other two databases."

And of the stability, it says: "This database had a number of failure states that could repeatably be generated. With large numbers of users, it was found that the database would grind to a halt."

DB2 for NT generally acquitted itself well: "Despite the occasional unexplained server or database crash, it proved impossible to consistently generate a fatal error in DB2 for Windows NT. It seemed to be capable of taking most things thrown at it."

And DB2 for AIX was a positive paragon of virtue: "DB2 for AIX proved to be by far the most stable of the platforms tested. No repeatable errors were found, and the system never fell over. The performance never fell appreciably below that which was expected in any of our tests."

Reducing security risks from open source software

Next page: Perspective

More from The Register

next story
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
Do YOU work at Microsoft? Um. Are you SURE about that?
Nokia and marketing types first to get the bullet, says report
Microsoft takes on Chromebook with low-cost Windows laptops
Redmond's chief salesman: We're taking 'hard' decisions
Cheer up, Nokia fans. It can start making mobes again in 18 months
The real winner of the Nokia sale is *drumroll* ... Nokia
EU dons gloves, pokes Google's deals with Android mobe makers
El Reg cops a squint at investigatory letters
Chrome browser has been DRAINING PC batteries for YEARS
Google is only now fixing ancient, energy-sapping bug
prev story

Whitepapers

Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.