// https://dev.mysql.com/doc/refman/5.7/en/server-status-variables.html
if ( $s->Innodb_buffer_pool_pages_total > 0 ) {
$ratio = $s->Innodb_buffer_pool_pages_data / $s->Innodb_buffer_pool_pages_total;
// https://dev.mysql.com/doc/refman/5.7/en/server-status-variables.html
if ( $s->Innodb_buffer_pool_pages_total > 0 ) {
$ratio = $s->Innodb_buffer_pool_pages_data / $s->Innodb_buffer_pool_pages_total;