The performance-tuning tag has no wiki summary.
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How to change page size in an existing sybase database
I have an existing database with 1 kb page size i want to increase that to 16kb and increase cache to take advantage of my memory for best performance. sybase documentations said you can't change page ...
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High Cardinality, Time Series Data.. what DB should I use?
I have a system that I'm building based on ElasticSearch. It works great, except I'm having trouble with one of my facets. I've got about 10 million documents, and each document has 1 to 200 ...
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Amazon RDS MySQL 5.5 Innodb Lock wait timeout exceeded
Ever since we've moved to Amazon RDS, we've had some pretty crazy performance issues, and today we started having locking issues. Because of that, I figured it was just a timeout issue, and went to ...
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Performance of database with transactional data
There are lots of row modifications (several thousands of rows per minute) in our PostgreSQL database that stores transactional data. We have a problem because PostgreSQL runs vacuuming process and ...
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Configuring PostgreSQL for read performance
Our system write a lots of data (kind of Big Data system). The write performance is good enough for our needs but the read performance is really too slow.
The primary key (constraint) structure is ...
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SQL Server Database Engine Tuning Advisor vs DMV queries
What is the best way to tune the indexes on my production database? I normally use the following query :
SELECT
user_seeks * avg_total_user_cost * (avg_user_impact * 0.01) AS [index_advantage],
...
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InnoDB tuning with 1G of ram limit
I am trying to calculate variable moving averages crossover with variable dates.
That is: I want to prompt the user for 3 values and 1 option. The input is through a web front end so I can build/edit ...
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Tuning advisor with Extended events?
With SQL traces I was able to analyze them with Database Engine Tuning Advisor to obtain basic recommendations for perf. tuning(missing indexes, statistics,...).
Now, with SQL 2012 and Extended ...
