Tagged Questions

1
vote
2answers
193 views

Stress test MySQL with queries captured with general log in MySQL

Is there any tool available which can do stress testing using the log file created by MySQL general log? After a lot of search on google I found few stress testing tools which only use some benchmarks ...
0
votes
1answer
216 views

AWS performance of RDS with provisioned IOPS vs EC2

Has anyone done a performance comparison of AWS RDS with the new provisioned IOPS vs EC2? I've found plenty of non-high IOPS RDS vs EC2 but nothing with the new high IOPS feature in RDS.
0
votes
1answer
555 views

Why does max_used_connections status not get refreshed automatically once it reaches max_connections, even though the Threads_connected falls down

I always wonder, why does the max_used_connections value not come down, once it reaches the peak value of max_connections? I always flush the status and bring down this value to avoid DB connection ...
1
vote
1answer
377 views

PostgreSQL vs MySQL benchmarks when a 2nd level cache is included

Has anyone been able to find any benchmarks comparing PostgreSQL and MySQL performance when they are used by a system through Hibernate (or another comparable ORM) and the 2nd level cache (backed by ...
7
votes
3answers
2k views

How to stress test a SQL server?

I've been tasked to stress test our MSSQL Server and MySQL Server. I would like to know if there are any tools or scripts which I could use on our current systems and the new system to compare ...
4
votes
2answers
369 views

Multi-threaded replay of master activity for load/performance testing

Does anyone know of any existing tools/products that accomplish what I'm trying to do? After searching around for a bit the only thing I could find surrounding what I'm trying to accomplish is ...
12
votes
2answers
3k views

How do I properly perform a MySQL bake-off?

I want to performance test (aka bake-off) MySQL server rpm against some other forks such as Percona server, MariaDB, and possibly some others. I'm hoping that by asking this question I can better ...
3
votes
3answers
671 views

Database Performance Tuning

I have a MySQL backend, MS Aaccess front-end system that is nice and responsive over a local network but becomes sluggish over a broadband connection. I haven't done any performance tuning as of yet. ...
20
votes
8answers
3k views

Tool to generate large datasets of test data

Many times when trying to come up with an efficient database design the best course of action is to build two sample databases, fill them with data, and run some queries against them to see which one ...