MySQL is VERY slow on my ext4 file system [closed]

I have a normal hardware, I just installed Ubuntu 11.04 anew. But something's completely wrong. PHPunit tests are REALLY slow.

I have no idea what's wrong. With ext3 all was normal.

Thanks.

Solution 1:

It looks like setting barrier=0 as a mount option will help with performance.

See MySQL bug #46959.

Test in a Staging environment first!

Hope this helps.