myisam_bulk_insert_tree_size clarification

MySQL uses special tree-like cache to make bulk inserts (that is,

@code{INSERT ... SELECT}, @code{INSERT ... VALUES (...), (...), ...}, and

@code{LOAD DATA INFILE}) faster. This variable limits

the size of the cache tree in bytes per thread. Default value is 8 MB.

the size of the cache tree in bytes per thread.

@strong{Note:} This cache is only used when adding data to non-empty table.

Default value is 8 MB.

@item @code{myisam_recover_options}

The value of the @code{--myisam-recover} option.

@itemize @bullet

@item

If you are inserting many rows from the same client at the same time, use

multiple value lists @code{INSERT} statements. This is much faster (many

times in some cases) than using separate @code{INSERT} statements.

Tune up @code{myisam_bulk_insert_tree_size} variable to make it even

faster. @xref{SHOW VARIABLES}.

multiple value lists @code{INSERT} statements. This is much faster (many times

in some cases) than using separate @code{INSERT} statements.  If you are adding

data to non-empty table, you may tune up @code{myisam_bulk_insert_tree_size}

variable to make it even faster. @xref{SHOW VARIABLES}.

@item

If you are inserting a lot of rows from different clients, you can get

higher speed by using the @code{INSERT DELAYED} statement. @xref{INSERT,