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06 Sep 13 - IBM data magazine - Mission Accomplished - Miami, Florida will be the backdrop for the 2014 IIUG Informix Conference... Read
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28 May 12 - Bloor - David Norfolk on the recent Informix benchmark "pretty impressive results"... Read
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9 Apr 12 - Mastering Data Management - Upping the Informix Ante: Advanced Data Tools... Read
22 Mar 12 - developerWorks - Optimizing Informix database access... Read
14 Mar 12 - - International Informix User Group set to meet in San Diego... Read
1 Mar 12 - IBM Data Management - IIUG Heads West for 2012 - Get ready for sun and sand in San Diego... Read
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13 Jan 12 - MC Press online - Informix Dynamic Server Entices New Users with Free Production Edition ... Read
11 Jan 12 - Computerworld - Ecologic Analytics and Landis+Gyr -- Suitors Decide to Tie the Knot... Read
9 Jan 12 - - DNS impact on Informix / Impacto do DNS no Informix... Read
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1 Aug 11 - IBM Data Management Magazine - IIUG user view: Happy 10th anniversary to IBM and Informix... Read
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27 May 11 - IBM Data Management Magazine - IIUG user view: Big data, big time ( Series data, warehouse acceleration, and 4GLs )... Read
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21 Mar 11 - Yahoo! Finance - IBM and Cable&Wireless Worldwide Announce UK Smart Energy Cloud... Read
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11 Mar 11 - InvestorPlace - It's Time to Give IBM Props: How many tech stocks are up 53% since the dot-com boom?... Read
9 Mar 11 - DBTA - Database Administration and the Goal of Diminishing Downtime... Read
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25 Jan 11 - PR Newswire - Bank of China in the UK Works With IBM to Become a Smarter, Greener Bank... Read
12 Oct 10 - Database Trends and Applications - Informix 11.7: The Beginning of the Next Decade of IBM Informix... Read
20 Sep 10 - - ITG analyst paper: Cost/Benefit case for IBM Informix as compared to Microsoft SQL Server... Read
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20 Jul 10 - IBM Announcements - Software withdrawal: Elite Support for Informix Ultimate-C Edition... Read
24 May 10 - eWeek Europe - IBM Supplies Database Tech For EU Smart Grid... Read
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10 February 2010 - The Wall Street Journal - International Business Machines is expanding an initiative to win over students and professors on its products. How do they lure the college crowd?... Read

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IDS Forum

Re: Question on tuning

Date: Tuesday, 2 May 2017, at 10:35 a.m.

In Response To: Re: Question on tuning (Art Kagel)

Thank you for the unfortunate news. Is there anything that can be done to at least offset the issue a little?


From: <> on behalf of Art Kagel <>
Sent: Tuesday, May 2, 2017 8:28 AM
Subject: Re: Question on tuning [39084]


That's what I was afraid of. The T5240 is a dual socket system sporting
UltraSparc T2+ processors. These T-class processors were designed in the
last days of Sun Microsystems with the specific purpose of running Web apps
and Java programs quickly. These highly threaded processes were choking
modern multipath SMP processors like the UltraSparc M-class processors
because their threads executed only a few hundred instructions before
passing control to another thread. This behavior caused performance
problems because long instruction queues, caches, translation pre-fetch
buffers, and multi-path predictive circuits had to be flushed of unneeded
instructions causing many-cycle delays every few hundred cycles.

To offset that problem the Niagra processors (T1) were developed without
these "unnecessary" optmizations. The T2 & T2+ processors took the design
even further in the same direction. For web apps and Java programs, and
even some heavily threaded C++ applications, the strategy worked. The T*
processors shone out in Java based web service benchmarks. However, larger
more traditional processes - like database servers - suffered extreme
performance degradation on these processors as opposed to how they ran on
the earlier M-class. Informix is highly threaded, however, because it was
developed before the four competing thread library versions resolved
themselves to a single winner in the late '90s, Informix uses its own
threading library and its own thread scheduling. To the OS and to the
processors each oninit process behaves as a massive single threaded
application. Informix on T1 through T3 is a technology mismatch.

It wasn't until the T4 & T5 processors, developed by Oracle after it
acquired Sun, as they tried to get their own unthreaded database servers to
perform on the hardware they now built and sold under their name, that the
missing pieces of a modern optimized processor were restored to the
T-class. Only the T5 is marginally successful in this way.

Your old system is outperforming your new one because the old system, which
is probably an M15 system, is MUCH more powerful than the new one is.


Art S. Kagel, President and Principal Consultant
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A place to share my views and ideas which may be of interest to the Informix user Community.

Disclaimer: Please keep in mind that my own opinions are my own opinions
and do not reflect on the IIUG, nor any other organization with which I am
associated either explicitly, implicitly, or by inference. Neither do
those opinions reflect those of other individuals affiliated with any
entity with which I am affiliated nor those of the entities themselves.

On Tue, May 2, 2017 at 8:04 AM, LARRY SORENSEN <> wrote:

> The new server is a T5240. I am trying to get the model of the older
> server,
> but it is offline at the moment. I will send it soon.
> Larry
> ________________________________
> From: <> on behalf of Frank
> Langelage
> <>
> Sent: Tuesday, May 2, 2017 1:11 AM
> To:
> Subject: Re: Question on tuning [39070]
> On 02.05.17 05:37, LARRY SORENSEN wrote:
> > Solaris 10
> >
> > IDS 11.50.FC5 Workgroup
> >
> > SPARC 64 bit
> >
> > I have two servers, one older server and one newer server. The newer
> server
> is
> > obviously more powerful.
> >
> Which server models you're using?
> ************************************************************
> *******************
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