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Conference ulysse::rdb_vms_competition

Title:DEC Rdb against the World
Moderator:HERON::GODFRIND
Created:Fri Jun 12 1987
Last Modified:Thu Feb 23 1995
Last Successful Update:Fri Jun 06 1997
Number of topics:1348
Total number of notes:5438

714.0. "V3.1 vs V4.0 benchmarks" by STLACT::LINCOLN (Myra Lincoln) Wed Aug 15 1990 17:25

    Can anyone comment on the recent TPC benchmark results between Rdb V3.1
    (21.7 tps on a 4000-300) and V4.0 (21.6 tps on the same)?  I thought
    there were some performance enhancements implemented in V4.0. Are these
    results due to overhead associated with 2PC? 
T.RTitleUserPersonal
Name
DateLines
714.1SillyPOBOX::BOOTHBo knows MUMPSWed Aug 15 1990 20:088
    As I understand it, those results were obtained with VERY EARLY FT of
    V4. The results never should have been published as it is not at all
    unusual for early FT performance to be substantially different than
    the performance of the product that is released.
    
    
    ---- Michael Booth
    
714.2Product Manager of RdbROM01::FERRARISDiscover wildlife... have kids!Thu Aug 16 1990 15:2773
    From the NOVA::RDB_31 notes file:
================================================================================
Note 858.0           BEWARE of VAX4000 Performance Numbers!           No replies
NOVA::HORN "Steve Horn, Database Systems"            66 lines  15-AUG-1990 13:48
--------------------------------------------------------------------------------

    I've received a lot of mails and phone calls about the performance
    numbers recently released for the VAX4000.  Here's one of my more
    recent replies.
    
    -Steve
    
    
    
From:   NOVA::HORN         "Database Systems Product Management" 15-AUG-1990 11:42:39.67
To:     MAIL::LINCOLN
CC:     HORN
Subj:   RE: Rdb V3.0 vs V4.0 benchmarks

Myra,

It was unfortunate that the 4000 numbers were released.  The 4.0
numbers were using an early field test version and do not represent
actual V4.0 performance.  We will re-run the tests when we are
closer to actual shipment, and I can assure you that V4.0 will
out perform V3.1.

Regards,

Steve



From:   MAIL::LINCOLN      14-AUG-1990 17:05:01.98
To:     NOVA::HORN
CC:     
Subj:   Rdb V3.0 vs V4.0 benchmarks


                  I N T E R O F F I C E   M E M O R A N D U M

                                        Date:     14-Aug-1990 03:53pm CDT
                                        From:     MYRA LINCOLN @STO
                                                  LINCOLN.MYRA
                                        Dept:     SOFTWARE
                                        Tel No:   DTN:445-6563

TO:  Remote Addressee                     ( _NOVA::HORN )


Subject: Rdb V3.0 vs V4.0 benchmarks

Steve,

I recently gave the Database Strategy PID to the Monsanto Rdb Users Group. The 
PID talks about a major goal of High Performance. It also discusses some Near 
Term features such as Improved Lock Management, Shortened Path Length and 
Optimized Commit Sequence - at least some of which are implemented in V4.0. As 
Monsanto is particularly concerned with performance, they asked me to follow-up 
with a benchmark comparison of Rdb V3.0 and V4.0. 

I found such a comparison - using the TPC benchmark on a 4000. However, the 
version 4.0 numbers are actually lower than the V3.0 numbers. Is there 
something involved that negates the performance improvements that were made to 
V4.0? (Such as the overhead associated with 2PC?)

I would like the party line on this issue before I respond to Monsanto's 
request.

Thanks!

    

714.3We need some good numbers.MBALDY::LANGSTONRdb Sales Support MercenaryThu Oct 04 1990 02:4826
�                         We will re-run the tests when we are
�closer to actual shipment, and I can assure you that V4.0 will
�out perform V3.1.
    
    Well... here we are closer to actual shipment (I understand that late
    November is somebody's guess).  Can we expect to see the
    "new-and-improved" results soon?  A customer, today, asked me if we
    have some benchmark numbers for 4.0.  They are looking for a reason to
    upgrade.  I said "we should have those soon."
    
    I just saw an impressive-looking bound document in our sales
    literature room, "TPC Benchmark(TM) A Results for the VAX 4000 Model
    300 System usig VAX ACMS, VAX Rdb/VMS, and VAX DECforms Software and
    Accompanying KPMG Peat Marwick Attestation Report  Number 1 July 1990"
    
    It has a big "DECtp SYSTEMS" sideways (like Bud Dry) on the front
    cover.  
    
    I'm tempted to go in there after the librarian goes home and
    throw them all in the dumpster.  In the hands of an unsuspecting
    sales or sales support rep, these could be deadly.
    
    It quotes the numbers mentioned in the base note, i.e. 21.7 TPS for
    Rdb V3.1 and 21.6 for V4.0.
    
    
714.4DO ITCOPCLU::BRUNSGAARDACID isn't just music and junkThu Oct 04 1990 09:548
    Please do it !!!
    
    The numbers are bogus, and I really hope the person responsible for
    these GOOFY-numbers have had his/her share of the noise.
    
    And leave a note to the librarian specifying WHY you have done it.
    
    Lars