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| -rw-r--r-- | Docs/manual.texi | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/Docs/manual.texi b/Docs/manual.texi index e314153113f..bbe7355a33c 100644 --- a/Docs/manual.texi +++ b/Docs/manual.texi @@ -18413,7 +18413,9 @@ After this many write locks, allow some read locks to run in between. 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. @@ -24116,10 +24118,10 @@ Some ways to speed up inserts: @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, |