---- Original message ---- >Date: Mon, 25 Jun 2012 12:03:10 -0500 >From: pgsql-performance-owner@xxxxxxxxxxxxxx (on behalf of Shaun Thomas <sthomas@xxxxxxxxxxxxxxxx>) >Subject: Re: MemSQL the "world's fastest database"? >To: Craig James <cjames@xxxxxxxxxxxxxx> >Cc: <pgsql-performance@xxxxxxxxxxxxxx> > >On 06/25/2012 11:25 AM, Craig James wrote: > >> Any thoughts about this? It seems to be a new database system designed >> from scratch to take advantage of the growth in RAM size (data sets that >> fit in memory) and the availability of SSD drives. It claims to be "the >> world's fastest database." > >I personally don't put a lot of stock into this. You can get 90k+ TPS >from an old PostgreSQL 8.2 install if it's all in memory. High >transactional output itself isn't substantially difficult to achieve. > >I'm also not entirely certain how this is different from something like >VoltDB, which also acts as an in-memory database with high TPS throughput. > >Then there's this from the article: > >"The key ideas are that SQL code is translated into C++, so avoiding the >need to use a slow SQL interpreter, and that the data is kept in memory, >with disk read/writes taking place in the background." > >Besides the nonsense statement that SQL is translated to C++ (Lexical >scanners would circumvent even this step, and does that mean you have to >literally compile the resulting C++? Ridiculous.) This violates at least >the 'D' tenet of ACID. Fine for transient Facebook data, but not going >anywhere near our systems. DB2 on the mainframe (if memory serves), for one, will compile static SQL to machine code. Not that unusual. http://www.mainframegurukul.com/tutorials/database/db2_tutorials/DB2Precompilebind.html http://www.mainframegurukul.com/tutorials/database/db2_tutorials/sample-db2-cobol-compile-jcl.html > >-- >Shaun Thomas >OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604 >312-444-8534 >sthomas@xxxxxxxxxxxxxxxx > >______________________________________________ > >See http://www.peak6.com/email_disclaimer/ for terms and conditions related to this email > >-- >Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) >To make changes to your subscription: >http://www.postgresql.org/mailpref/pgsql-performance -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
