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I have mysql and i use a tmpfs disk that is 768 M. Mysql uses about 70% of the memory. There is about 1170 M available.

If mysql uses ram to the point there is less than 768; will my RAM disk be limited in size?

  • You using RAM disk and not tmpfs, right? – jynus Apr 3 '15 at 18:56
  • I am using tmpfs – Chris Muench Apr 3 '15 at 19:30
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In my opinion, the RAM given over to a RAM disk would be better utilized for other caching. If InnoDB, give it to innodb_buffer_pool_size. For MyISAM, give a little to key_buffer_size, leave most for data caching, which the OS does.

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