Jet Profiler is a real-time query performance and diagnostics tool for the MySQL database server. It’s core features:

• Query, table and user performance
• Graphical visualisation
• Low overhead
• User friendly

• Query, table and user performance

  Jet Profiler focuses on queries, tables and users. This gives you the information you need in order to quickly fix performance problems in your code, such as most frequent queries, most used tables or the busiest users.

  Graphical visualisation

  Data is collected, analyzed and displayed in real-time in diagrams, pie charts and tables. The graphical layout allows you to easily drill down and navigate your way through the vital data.

  Low overhead

  Most of the profiling work is done in the Jet Profiler application, not in the database server. Therefore, the performance hit is normally negligible, around 1%.

  User friendly

  It supports all MySQL versions. No database server changes are necessary. No agents or separate services are needed. Jet Profiler is a desktop application which runs on your computer. You start it, connect to a server, hit the record button and you can review the results in minutes. Jet Profiler runs on Windows, Mac and Linux.

Features

• Top Queries – See which queries are being run the most on your server.
• Top Users – See which users are using your server the most.
• Top Tables – See which database tables are opened the most.
• Top States – See which states your database is most busy doing, such as creating temp tables.
• Top IPs – See which client IPs are using your server the most.
• Replication Profiling – You can measure how much capacity you have left on the replication SQL thread on slaves. If you are using MyISAM a lot, a lock analysis will help discover any locks associated with replication.
• Master and Slave statistics – See how many threads are working on your masters and slaves. Find I/O or SQL bottlenecks.
• MyISAM Lock Analysis – You can view which queries cause the most amount of MyISAM locking. This can be used to minimize replication lag and lock contention on busy tables.
• Query Ratings – You can get your queries rated and see which queries are most likely to cause load due to missing indices, big tables and more.
• Query Visualization – The query execution plan can be visualized using EXPLAIN. A diagram shows the table lookups involved, the rating and join size.
• Slow Queries – See the slowest queries per time interval.
• Zoomable GUI – You can easily zoom in on spikes in your load and see the corresponding queries for that time interval.
• General Server Metrics – Such as threads connected, network I/O, command statistics, handler statistics and more. 50+ metrics are recorded from the server.
• Save / Load Support – Save profiling data for later use, compare week to week or normal load vs high load situations.
• HTML reports – Generate html reports for later viewing.
• SSH Tunneling – Connect to remote databases using SSH tunneling.
• Command line scheduling – Automate repeated recording.
• Multiple instances – Monitor multiple MySQL instances simultaneously.
• Low Overhead – Running the tool against your database typically costs around 1%. Recording granularity customizable.
• Supports all MySQL Versions – Works on 3.x (!), 4.0, 4.1, 5.0, 5.1 and 6.0, Enterprise and Community editions.
• Works on Windows, Mac and Linux
• No Server Changes
• Simple Setup
• Free / Professional / Enterprise Version – The free version doesn’t cost anything and isn’t time limited. Upgrade to the professional or enterprise version to get all features.
• Multi-language support – available in English, German, French, Japanese and Swedish.