Something like this?  Using <code>SHOW VARIABLES</code> and <code>SHOW GLOBAL STATUS</code>:

<i>Expression:</i>  <code>innodb_buffer_pool_size / _ram</code><br>
<i>Meaning:</i>  % of RAM used for InnoDB buffer_pool<br>
<i>Recommended range:</i>  60~80%<br>
<br>
<i>Expression:</i>  <code>Innodb_buffer_pool_reads / Innodb_buffer_pool_read_requests</code><br>
<i>Meaning:</i>  Read requests that had to hit disk<br>
<i>Recommended range:</i>  0-2%<br>
<i>What to do if out of range:</i>  Increase innodb_buffer_pool_size if you have enough RAM.<br>
<br>
<i>Expression:</i>  <code>Innodb_pages_read / Innodb_buffer_pool_read_requests</code><br>
<i>Meaning:</i>  Read requests that had to hit disk<br>
<i>Recommended range:</i>  0-2%<br>
<i>What to do if out of range:</i>  Increase innodb_buffer_pool_size if you have enough RAM.<br>
<br>
<i>Expression:</i>  <code>Innodb_pages_written / Innodb_buffer_pool_write_requests</code><br>
<i>Meaning:</i>  Write requests that had to hit disk <br>
<i>Recommended range:</i>  0-15%<br>
<i>What to do if out of range:</i>  Check innodb_buffer_pool_size<br>
<br>
<i>Expression:</i>  <code>Innodb_buffer_pool_reads / Uptime</code><br>
<i>Meaning:</i>  Reads<br>
<i>Recommended range:</i>  0-100/sec.<br>
<i>What to do if out of range:</i>  Increase innodb_buffer_pool_size?<br>
<br>
<i>Expression:</i>  <code>(Innodb_buffer_pool_reads + Innodb_buffer_pool_pages_flushed)  / Uptime</code><br>
<i>Meaning:</i>  InnoDB I/O<br>
<i>Recommended range:</i>  0-100/sec.<br>
<i>What to do if out of range:</i>  Increase innodb_buffer_pool_size?<br>
<br>
<i>Expression:</i>  <code>Innodb_buffer_pool_pages_flushed / Uptime</code><br>
<i>Meaning:</i>  Writes (flushes)<br>
<i>Recommended range:</i>  0-100/sec.<br>
<i>What to do if out of range:</i>  Increase innodb_buffer_pool_size?<br>
<br>
<i>Expression:</i>  <code>Innodb_buffer_pool_wait_free / Uptime</code><br>
<i>Meaning:</i>  Counter for when there are no free pages in buffer_pool.  That is, all pages are dirty.<br>
<i>Recommended range:</i>  0-1/sec.<br>
<i>What to do if out of range:</i>  First be sure innodb_buffer_pool_size is set reasonably; if still trouble, decrease innodb_max_dirty_pages_pct<br>
<br>