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_posts/2017/2017-06-29-performance-comparison-of-postgresql-connectors-in-matlab-part-I.md

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@@ -34,7 +34,7 @@ The first solution that at first glance seems to be rather obvious is to use **M
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JDBC connection. But it turns out this "standard" solution has some latent restrictions (concerning both performance, volumes and type of
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data to be processed) that do not allow to use the toolbox in our projects. And the goal of this paper is to reveal these
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restrictions and to compare it to another solution. The latter one, namely, [**PgMex library**](http://pgmex.alliedtesting.com), was developed by our team out of the necessity to work with big data of very diverse types (including *arrays*). [**PgMex library**](http://pgmex.alliedtesting.com) provides
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a connection to **PostgreSQL** via LibPQ library.
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a connection to **PostgreSQL** via libpq library.
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This part of the paper covers only data insertion performance, data retrieval will be discussed in Part II of the paper.
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In the next subsections below we compare the methods **datainsert** (and also **fastinsert** for the simplest experiments) with
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[**batchParamExec**](http://pgmex.alliedtesting.com/#batchparamexec). In this subsection we give some information on conditions
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for these experiments. All the testing was done on a box with Intel Core i7-5820K 3.30GHz processor, Asus X99-A motherboard, 64Gb DDR4 RAM
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running on 64-bit Windows 10. PostgreSQL 9.6 data storage was OCZ 256Gb Vector 280 SSD.
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running Matlab 2016b on 64-bit Windows 10. PostgreSQL 9.6 data storage was OCZ 256Gb Vector 280 SSD.
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We used [**PgMex library**](http://pgmex.alliedtesting.com) v1.1.0.
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A couple of words on data used for experiments. This data is based on real daily prices of stocks on some exchanges, so we do not deal below
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with some toy examples as above. Instead, we try to approximate a real-life usage as much as possible. The fields are as follows (the types pointed in

about.md

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<p class="short-bio">
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Peter V. Gagarinov is a financial model developer and a consultant specializing in financial market modeling, statistical forecasting and algorithmic trading. He supervised and participated
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in a dozen of financial R&D projects as quantitative modeling team-lead/system architect and later - as a head of R&D department at Allied Testing Ltd.
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He is a co-author and maintainer of Ellipsoidal Toolbox (ET) for Matlab - a popular Ellipsoidal Calculus modeling framework designed at Moscow State University, System Analysis Department of Applied Mathematics and Computer Science Faculty where he served as a research assosiate.<br>
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He is a co-author and maintainer of Ellipsoidal Toolbox (ET) for Matlab - a popular Ellipsoidal Calculus modeling framework designed at Moscow State University, System Analysis Department of Applied Mathematics and Computer Science Faculty where he served as a research associate.<br>
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</p>
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* <b><span class="alliedservices">Ilya Rublev, Ph.D</span>

feed.xml

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{% for post in site.posts limit:20 %}
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<item>
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<title>{{ post.title | xml_escape }}</title>
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<description><p>
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<description>
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{% if post.subtitle %}{{ post.subtitle | xml_escape }} - {% endif %}
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{{ post.excerpt | strip_html | xml_escape | truncatewords: site.excerpt_length }}</p>
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{{ post.excerpt | strip_html | xml_escape | truncatewords: site.excerpt_length }}
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{% if post.content != post.excerpt or excerpt_word_count > site.excerpt_length %}
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<p><a href="{{ site.url }}{{ post.url }}">[Read More]</a></p>
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<a href="{{ site.url }}{{ post.url }}">[Read More]</a>
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{% endif %}
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<pubDate>{{ post.date | date: "%a, %d %b %Y %H:%M:%S %z" }}</pubDate>

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