Question

I am experiencing slow performance with a CMS (WordPress) on my server.

I ran SHOW STATUS LIKE 'Qcache%';

Result:

Variable_name               Value
Qcache_free_blocks          0
Qcache_free_memory          0
Qcache_hits                 0
Qcache_inserts              0
Qcache_lowmem_prunes        0
Qcache_not_cached           0
Qcache_queries_in_cache     0
Qcache_total_blocks         0

I am thinking that values of zero are not good. Does anyone know if these values are okay? If they are not, do you have any recommendations on how I can improve my sites performance relative to MySQL?

Thanks.

AMENDED

Prior to running the command above, I ran SHOW VARIABLES LIKE 'have_query_cache';.

Result:

Variable_name       Value
have_query_cache    YES

AMENDMENT #2

Then I ran SHOW VARIABLES LIKE 'query_cache%';

Result:

Variable_name                   Value
query_cache_limit               1048576
query_cache_min_res_unit        4096
query_cache_size                0
query_cache_type                ON
query_cache_wlock_invalidate    OFF

AMENDMENT #3

Then I ran SHOW VARIABLES LIKE 'log_slow_queries';

Result:

Variable_name       Value
log_slow_queries    OFF

Answer 1

Those values show that the query cache is not active. See http://dev.mysql.com/doc/refman/5.1/en/query-cache-configuration.html