[aLcadraz]

tuning-primer.sh çıktısı :

        -- MYSQL PERFORMANCE TUNING PRIMER --
             - By: Matthew Montgomery -

MySQL Version 4.1.22-standard i686

Uptime = 3 days 17 hrs 10 min 19 sec
Avg. qps = 51
Total Questions = 16455832
Threads Connected = 71

Server has been running for over 48hrs.
It should be safe to follow these recommendations

To find out more information on how each of these
runtime variables effects performance visit:
http://dev.mysql.com/doc/refman/4.1/en/server-system-variables.html
Visit http://www.mysql.com/products/enterprise/advisors.html
for info about MySQL's Enterprise Monitoring and Advisory Service

SLOW QUERIES
Current long_query_time = 5 sec.
You have 5870 out of 16455844 that take longer than 5 sec. to complete
The slow query log is NOT enabled.
Your long_query_time seems to be fine

WORKER THREADS
Current thread_cache_size = 8
Current threads_cached = 7
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine

MAX CONNECTIONS
Current max_connections = 500
Current threads_connected = 71
Historic max_used_connections = 228
The number of used connections is 45% of the configured maximum.
Your max_connections variable seems to be fine.

MEMORY USAGE
Max Memory Ever Allocated : 662 M
Configured Max Per-thread Buffers : 1 G
Configured Max Global Buffers : 49 M
Configured Max Memory Limit : 1 G
Physical Memory : 2.97 G
Max memory limit seem to be within acceptable norms

KEY BUFFER
Current MyISAM index space = 333 M
Current key_buffer_size = 7 M
Key cache miss rate is 1 : 166
Key buffer fill ratio = 100.00 %
You could increase key_buffer_size
It is safe to raise this up to 1/4 of total system memory;
assuming this is a dedicated database server.

QUERY CACHE
Query cache is enabled
Current query_cache_size = 32 M
Current query_cache_used = 22 M
Current query_cache_limit = 4 M
Current Query cache Memory fill ratio = 70.09 %
Current query_cache_min_res_unit = 4 K
Query Cache is 15 % fragmented
Run "FLUSH QUERY CACHE" periodically to defragment the query cache memory
If you have many small queries lower 'query_cache_min_res_unit' to reduce fragmentation.
MySQL won't cache query results that are larger than query_cache_limit in size

SORT OPERATIONS
Current sort_buffer_size = 2 M
Current record/read_rnd_buffer_size = 256 K
Sort buffer seems to be fine

JOINS
Current join_buffer_size = 132.00 K
You have had 400 queries where a join could not use an index properly
You have had 3 joins without keys that check for key usage after each row
You should enable "log-queries-not-using-indexes"
Then look for non indexed joins in the slow query log.
If you are unable to optimize your queries you may want to increase your
join_buffer_size to accommodate larger joins in one pass.

Note! This script will still suggest raising the join_buffer_size when
ANY joins not using indexes are found.

OPEN FILES LIMIT
Current open_files_limit = 4510 files
The open_files_limit should typically be set to at least 2x-3x
that of table_cache if you have heavy MyISAM usage.
Your open_files_limit value seems to be fine

TABLE CACHE
Current table_cache value = 2000 tables
You have a total of 1090 tables
You have 1935 open tables.
Current table_cache hit rate is 52%, while 96% of your table cache is in use
You should probably increase your table_cache

TEMP TABLES
Current max_heap_table_size = 16 M
Current tmp_table_size = 32 M
Of 386548 temp tables, 6% were created on disk
Effective in-memory tmp_table_size is limited to max_heap_table_size.
Created disk tmp tables ratio seems fine

TABLE SCANS
Current read_buffer_size = 128 K
Current table scan ratio = 804 : 1
read_buffer_size seems to be fine

TABLE LOCKING
Current Lock Wait ratio = 1 : 283
You may benefit from selective use of InnoDB.

şuanki mysql.cnf :

[mysqld]
set-variable = max_connections=500
safe-show-database
skip-locking
skip-name-resolve
long_query_time = 5
thread_cache_size = 8
query_cache_type = 1
query_cache_size = 32M
query_cache_limit = 4M
table_cache = 2000
low_priority_updates = 1

4gb ram var ama swap kullanımı çok fazla :s