Merhaba arkadaşlar.
my.cnf ilk hali şu
Kod:
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-locking
skip-innodb
#memlock
tmpdir = /temp
query_cache_limit=32M
query_cache_size=512M
query_cache_type=1
max_connections=100
max_user_connections=20
interactive_timeout=20
wait_timeout=20
connect_timeout=6
thread_cache_size=128
key_buffer=16M
join_buffer=1M
max_allowed_packet=16M
table_cache=20000
open_files_limit=60000
record_buffer=1M
sort_buffer_size=2M
read_buffer_size=2M
max_connect_errors=10
# Try number of CPU's*2 for thread_concurrency
thread_concurrency=4
myisam_sort_buffer_size=64M
#log-bin
server-id=1
key_buffer_size=256M
[mysql.server]
user=mysql
#basedir=/var/lib
[safe_mysqld]
err-log=/var/log/mysqld.log
pid-file=/var/lib/mysql/mysql.pid
open_files_limit=8192
[mysqldump]
quick
max_allowed_packet=16M
[mysql]
no-auto-rehash
#safe-updates
[isamchk]
key_buffer=32M
sort_buffer=32M
read_buffer=16M
write_buffer=16M
[myisamchk]
key_buffer=32M
sort_buffer=32M
Ve tuning-primer.sh çıktısı aşağıdaki şekilde.
Kod:
-- MYSQL PERFORMANCE TUNING PRIMER --
- By: Matthew Montgomery -
MySQL Version 5.0.81-community i686
Uptime = 33 days 20 hrs 41 min 39 sec
Avg. qps = 33
Total Questions = 96566905
Threads Connected = 2
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/5.0/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
The slow query log is NOT enabled.
Current long_query_time = 10 sec.
You have 6139 out of 96566926 that take longer than 10 sec. to complete
Your long_query_time seems to be fine
BINARY UPDATE LOG
The binary update log is NOT enabled.
You will not be able to do point in time recovery
See http://dev.mysql.com/doc/refman/5.0/en/point-in-time-recovery.html
WORKER THREADS
Current thread_cache_size = 128
Current threads_cached = 54
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine
MAX CONNECTIONS
Current max_connections = 100
Current threads_connected = 3
Historic max_used_connections = 58
The number of used connections is 58% of the configured maximum.
Your max_connections variable seems to be fine.
MEMORY USAGE
Max Memory Ever Allocated : 1.06 G
Configured Max Per-thread Buffers : 543 M
Configured Max Global Buffers : 778 M
Configured Max Memory Limit : 1.29 G
Physical Memory : 1.95 G
Max memory limit seem to be within acceptable norms
KEY BUFFER
Current MyISAM index space = 296 M
Current key_buffer_size = 256 M
Key cache miss rate is 1 : 14167
Key buffer free ratio = 35 %
Your key_buffer_size seems to be too high.
Perhaps you can use these resources elsewhere
QUERY CACHE
Query cache is enabled
Current query_cache_size = 512 M
Current query_cache_used = 137 M
Current query_cache_limit = 32 M
Current Query cache Memory fill ratio = 26.93 %
Current query_cache_min_res_unit = 4 K
Query Cache is 27 % 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 read_rnd_buffer_size = 256 K
Sort buffer seems to be fine
JOINS
Current join_buffer_size = 1.00 M
You have had 4449 queries where a join could not use an index properly
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 = 60000 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 = 20000 tables
You have a total of 2248 tables
You have 4758 open tables.
The table_cache value seems to be fine
TEMP TABLES
Current max_heap_table_size = 16 M
Current tmp_table_size = 32 M
Of 2335620 temp tables, 7% 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 = 2 M
Current table scan ratio = 94 : 1
read_buffer_size seems to be fine
TABLE LOCKING
Current Lock Wait ratio = 1 : 103
You may benefit from selective use of InnoDB.
If you have long running SELECT's against MyISAM tables and perform
frequent updates consider setting 'low_priority_updates=1'
If you have a high concurrency of inserts on Dynamic row-length tables
consider setting 'concurrent_insert=2'.
Tavsiyelerinizi bekliyorum.
Yardımcı bilgiler: 20.000 üzeri tekil hitli vbulletin + vbseo forum sayfası.
2009-05-01, 15:59
Benzer Konular
Normal
