Oracle 5.0 Reference Manual page 549

The number of rows inserted into
•
Innodb_rows_read
The number of rows read from
•
Innodb_rows_updated
The number of rows updated in
•
Key_blocks_not_flushed
The number of key blocks in the key cache that have changed but have not yet been flushed to disk.
•
Key_blocks_unused
The number of unused blocks in the key cache. You can use this value to determine how much of
the key cache is in use; see the discussion of
System Variables".
•
Key_blocks_used
The number of used blocks in the key cache. This value is a high-water mark that indicates the
maximum number of blocks that have ever been in use at one time.
•
Key_read_requests
The number of requests to read a key block from the cache.
• [529]
Key_reads
The number of physical reads of a key block from disk. If
key_buffer_size
Key_reads [529]/Key_read_requests
•
Key_write_requests
The number of requests to write a key block to the cache.
• [529]
Key_writes
The number of physical writes of a key block to disk.
•
Last_query_cost
The total cost of the last compiled query as computed by the query optimizer. This is useful for
comparing the cost of different query plans for the same query. The default value of 0 means
that no query has been compiled yet. This variable was added in MySQL 5.0.1, with a default
value of -1. In MySQL 5.0.7, the default was changed to 0; also in version 5.0.7, the scope of
Last_query_cost
The
Last_query_cost
complex queries such as those with subqueries or UNION. For the latter, the value is set to 0.
Prior to MySQL 5.0.16, this variable was not updated for queries served from the query cache.
•
Max_used_connections
The maximum number of connections that have been in use simultaneously since the server started.
•
Not_flushed_delayed_rows
The number of rows waiting to be written in
Server Status Variables
tables. Added in MySQL 5.0.2.
InnoDB
[529]
tables. Added in MySQL 5.0.2.
InnoDB
[529]
tables. Added in MySQL 5.0.2.
InnoDB
[529]
[529]
[529]
[529]
[458] value is probably too small. The cache miss rate can be calculated as
[529].
[529]
[529]
[529] was changed to session rather than global.
[529] value can be computed accurately only for simple "flat" queries, not
[529]
[529]
529
key_buffer_size
Key_reads
queues.
INSERT DELAYED
[458] in Section 5.1.4, "Server
[529] is large, then your