MyISAM table keeps crashing. How to go about finding the cause or debugging it?

Question

On one of the site's I manage, I have a table set to MYISAM, and it constantly crashes. Automatic repair fails every time, so I have to go in and run the REPAIR TABLE command. I've looked at possible solutions such as this one: MySQL table is marked as crashed and it looks likes the best way might be to change the table to InnoDB.

However, the table has a FULLTEXT index, and if I could remove it then it would be no problem, but the site is running on a framework (specifically Elgg), so I don't know what kind of damage or problems I may have later on, so that might not be a good option.

So for my question: How can I find the cause of the crash? The site is on a web host, and running on PHP.

Answer 1

It may due to large number of connections on the same table then allocated in the my.cnf file.

As MyISAM locks the table and all threads remain in waiting list.