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Q: 

Problems with large MySQL tables

Hello guys,

I'm having some problems with large MySQL tables. The tables are in MyIsam type and some queries can take up to 15 seconds. These tables are mostly read, so this is becoming a problem. My guess is that the software is issuing slow/poorly written queries to the database.

Example: implicit joins x explicit joins. If i rewrite these queries to explicit, can I expect a gain of perfomance?

Reindexing tables can take a long time. Would that operation help me with perfomance?

What are other tips you can give me? I realize that I did not provided many details, but tell me what would be a start and I´ll see if i can release it.

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