Tag: tuning

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pg_stat_statements: The way I like it

by Hans-Jürgen Schönig | 10.2015
If you really want to track down slow queries, massive I/O and lousy performance, there is no way around the […]

pgstrom: Checking GPU performance

by Hans-Jürgen Schönig | 09.2015
Finally I got around to take a more extensive look at pgstrom (a module to make use of GPUs). The […]

Testing GPU-accelerated PostgreSQL

by Hans-Jürgen Schönig | 09.2015
NVIDIA's CUDA is definitely a great thing and I have to admit that I already got excited years ago when […]

PostgreSQL 9.4 aggregate filter clauses: They do pay off

by Hans-Jürgen Schönig | 02.2015
In my previous posting on PostgreSQL 9.4 I wrote about aggregate FILTER clauses, which are a neat way to make […]

Next stop: Joining 1 million tables

by Hans-Jürgen Schönig | 09.2014
This week I started my preparations for one of my talks in Madrid. The topic is: "Joining 1 million tables". […]

Speeding up things with hint bits

by Hans-Jürgen Schönig | 08.2014
Post UPDATED June 2023: PostgreSQL is a highly sophisticated relational database system capable of performing wonderful operations. But, sophistication also […]

Optimization issues: Cross column correlation

by Hans-Jürgen Schönig | 07.2014
UPDATE Sept. 2023: For more recent information about planner statistics, see the PostgreSQL documentation about extended statistics, or this blog […]

Detecting wrong planner estimates

by Hans-Jürgen Schönig | 07.2014
In 99% of all cases the PostgreSQL planner does a perfect job to optimize your queries and to make sure […]

Logging - the hidden speedbrakes

by Hans-Jürgen Schönig | 03.2014
When it comes to performance, people tend to forget some basic topics entirely. One of those topics is the impact […]

max_connections - Performance impacts

by Hans-Jürgen Schönig | 03.2014
It's commonly known that setting max_connections to an insanely high value is not too good for performance. Generations of system […]
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