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40
votes
2answers
15k views

How can I time SQL-queries using psql?

I would like to benchmark some SQL-queries agains my PostgreSQL database. Is there any way I can time SQL-queries using psql?
-1
votes
0answers
39 views

Benchmark New NoSQL DB? Hyperdex, Aerospike, MonetDB [closed]

I would like to find the fastest database (preferably free) for some OLTP and a lot of OLAP. I reduced my canidates to two groups: a) MonetDB vs RocksDB vs Couchbase OR Redis -> for an in memory ...
0
votes
1answer
46 views

How can I measure the number of IOPs for a certain query

I need to estimate the max IOPs for a certain MySQL DB (one that does not exist yet). The OS is Linux and the DB is MySQL 5.1.x (though I don't think the DB brand is important for the asked topic) ...
0
votes
0answers
18 views

Which benchmark assess string pattern matching in a database?

I have a postgresql DB in which I do a lot of string matching ala : UPDATE table1 SET colum1 = TRUE WHERE colum2 LIKE '%teststring%'; colum2 is a whole html file As I said I do A LOT of this and ...
10
votes
4answers
4k views

Are there any MySQL Benchmarking tools?

I've heard a long time ago that there is this tool that helps you tweek mysql settings for better performance but i can't seam to find it. I am aware that I can use ab for apache to simulate high ...
3
votes
2answers
256 views

Running a TPC-C Benchmark Without sleep() i.e. key-in + think time

We are running a TPC-C benchmark against a PostgreSQL 9.2 server using JdbcRunner-1.2 implementation. During first few tests we were not getting a smooth (that is, without sudden spikes down to almost ...
0
votes
0answers
38 views

What dialect is recommended for MySQL when using TPC-DS query generator?

I am trying to do a benchmark using TPC-DS and I was wondering what value should be used in the parameter "Dialect" for the dsqgen when the tests are going to be performed in MySQL. Also, I was ...
2
votes
2answers
350 views

How can I generate TPC-DS queries for PostgreSQL?

I'm using TPC-DS to run some benchmarks on a few versions of postgres that I have. I noticed that there is no template for generating the TPC-DS queries with the target database as postgres. The ...
0
votes
0answers
65 views

How to generate TPC_DS queries for Oracle?

I have downloaded the DSGEN tool from the TPC-DS web site and already generated the tables and loaded the data into Oracle XE. I am using the following command to generate the SQL statements: ...
1
vote
3answers
238 views

Clever repeatable benchmarking and bottleneck detection test bench - PostgreSQL

Has anyone usefull ideas, inspration or literature for me to design a good test bench for PostgreSQL. I need repeatable results, which are applyable in realworld and production environement (no ...
1
vote
2answers
601 views

How to generate TPC-DS query for sql-server from templates

I know that dsqgen is used to transform the query templates into executable SQL. But when I type in the command line: "dsqgen /directory query_templates /template query1.tpl /dialect sqlserver /scale ...
4
votes
1answer
471 views

Running the DBT2 test results in 0.00 NOTPM

I'm trying to run the MySQL DBT2 Benchmark Tool, I have unzipped the archive and run the following commands: ./configure --with-mysql make make install mkdir /tmp/dbt datagen -w 3 -d /tmp/dbt --mysql ...
2
votes
2answers
639 views

any documentation on tpcc-mysql benchmark tool

Where can I find tpcc-mysql documentation? I google it but I can't find any documentation about it.
12
votes
1answer
3k views

How can I benchmark a PostgreSQL query?

I want to benchmark a query containing an user-defined function I have written for PostgreSQL. Are there any standard ways to run such a benchmark? I know that timing can be turned on with \timing ...
0
votes
2answers
362 views

MySQL Benchmark on FreeBSD and Ubuntu [closed]

I'd like to benchmark two db servers, one is running Ubuntu the other FreeBSD. Unfortunately we are unable to install SysBench on the FreeBSD OS. Could anyone recommend any alternatives? Or should I ...
0
votes
1answer
112 views

mysqlslap running very slow on a specific computer

I've recently discovered the tool mysqlslap and have run some simple tests with it. I currently have three test environments (2 Win 7, 1 Linux Ubuntu) where I can run these tests. However, running a ...
1
vote
2answers
270 views

mysqlslap number in sql statement to change with iteration

I am trying to figure out how to increment a number in a mysqlslap query with every iteratiom. Let me explain what I exactly mean: I got a query: SELECT age FROM member WHERE id = [some number] ...
0
votes
1answer
199 views

Why we use low numbers for concurrent in MySQL benchmarks or HTTP_LOAD? [closed]

I've seen so many times that we use numbers like 5,6 or 10 at most. What is this concurrency? Doesn't it refer to number of simultaneous users in bench? EDIT I'm not talking about any specific ...
1
vote
1answer
335 views

SQL Server 2012 Performance Test

I've been given a task to test where an SQL server 2012 can achieve better performances - we have two options: Use the SQL Server as an On-Premise machine (Standalone server that we have) Use the ...
4
votes
1answer
3k views

I want to know about the IOPS (I/O Per Second) and How it influences the DB CRUD operation

I want to get a dedicated server for my Database (MySQL) which runs InnoDB Engine. There is this option in InnoDB capacity that you can define the IOPS in it. Let's say that I have a SATA 72K-RPM HDD ...
2
votes
1answer
605 views

How to use the 'select benchmark' command on a procedure

I am trying to check which of my procedures is slowest and thus needs optimization. I currently have around 160 procedures and about 30 functions. I am using the select benchmark() to check the ...
4
votes
1answer
176 views

Establishing Baselines & Benchmarks

When you are hired as a DBA in a new shop, what are the important tools that you would use for establishing baselines and implementing benchmarks for 50+ instances? You advice would be highly ...
5
votes
1answer
310 views

How can I benchmark the performance of UDFs to figure out which one is faster?

Basically I have two scalar UDFs that output the same data, one that uses a cursor and one that uses a recursive CTE. I want to determine which one should be used and discard the other; I'd prefer to ...