3245
December 15th, 2012, 17:45
با سلام
قبلا در این انجمن اسکریپت mysqltuner (http://www.webhostingtalk.ir/f10/20920/) برای بهینه سازی mysql قرار داده شده بود که پارامترهای کمی را مورد بررسی قرار میداد و میشه گفت زیاد برای optimizeکافی نبود، حداقل برای من اینگونه بود. و خروجی متفاوتی احساس نمیکردم.
اکنون به شما اسکریپتی را معرفی میکنم که بسیار کارساز و جالب هست برای نصب در ssh دستورهای ذیل را اجرا فرمایید
wget http://www.day32.com/MySQL/tuning-primer.sh
sh tuning-primer.sh
نمونه خروجی:
-- MYSQL PERFORMANCE TUNING PRIMER --
- By: Matthew Montgomery -
MySQL Version 5.0.81-community i686
Uptime = 14 days 0 hrs 20 min 44 sec
Avg. qps = 10
Total Questions = 12160398
Threads Connected = 3
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 90 out of 12160419 that take longer than 10 sec. to complete
Your long_query_time may be too high, I typically set this under 5 sec.
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 = 8
Current threads_cached = 5
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 = 101
The number of used connections is 101% of the configured maximum.
You should raise max_connections
MEMORY USAGE
Max Memory Ever Allocated : 1.63 G
Configured Max Per-thread Buffers : 1.20 G
Configured Max Global Buffers : 426 M
Configured Max Memory Limit : 1.61 G
Physical Memory : 3.96 G
Max memory limit seem to be within acceptable norms
KEY BUFFER
Current MyISAM index space = 108 M
Current key_buffer_size = 384 M
Key cache miss rate is 1 : 3157
Key buffer free ratio = 85 %
Your key_buffer_size seems to be fine
QUERY CACHE
Query cache is enabled
Current query_cache_size = 32 M
Current query_cache_used = 18 M
Current query_cache_limit = 1 M
Current Query cache Memory fill ratio = 59.10 %
Current query_cache_min_res_unit = 4 K
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 = 8 M
Sort buffer seems to be fine
JOINS
Current join_buffer_size = 132.00 K
You have had 53627 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 = 4096 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 = 512 tables
You have a total of 4104 tables
You have 512 open tables.
Current table_cache hit rate is 1%, while 100% 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 1081722 temp tables, 35% were created on disk
Effective in-memory tmp_table_size is limited to max_heap_table_size.
Perhaps you should increase your tmp_table_size and/or max_heap_table_size
to reduce the number of disk-based temporary tables
Note! BLOB and TEXT columns are not allow in memory tables.
If you are using these columns raising these values might not impact your
ratio of on disk temp tables.
TABLE SCANS
Current read_buffer_size = 2 M
Current table scan ratio = 1537 : 1
read_buffer_size seems to be fine
TABLE LOCKING
Current Lock Wait ratio = 1 : 1545
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
همانطور که مطلع هستید این خروجی ها را میباید در etc/my.cnf ذخیره کرد و سپس دستور service mysql restart را احرا نمود.
موفق باشیدB-)
قبلا در این انجمن اسکریپت mysqltuner (http://www.webhostingtalk.ir/f10/20920/) برای بهینه سازی mysql قرار داده شده بود که پارامترهای کمی را مورد بررسی قرار میداد و میشه گفت زیاد برای optimizeکافی نبود، حداقل برای من اینگونه بود. و خروجی متفاوتی احساس نمیکردم.
اکنون به شما اسکریپتی را معرفی میکنم که بسیار کارساز و جالب هست برای نصب در ssh دستورهای ذیل را اجرا فرمایید
wget http://www.day32.com/MySQL/tuning-primer.sh
sh tuning-primer.sh
نمونه خروجی:
-- MYSQL PERFORMANCE TUNING PRIMER --
- By: Matthew Montgomery -
MySQL Version 5.0.81-community i686
Uptime = 14 days 0 hrs 20 min 44 sec
Avg. qps = 10
Total Questions = 12160398
Threads Connected = 3
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 90 out of 12160419 that take longer than 10 sec. to complete
Your long_query_time may be too high, I typically set this under 5 sec.
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 = 8
Current threads_cached = 5
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 = 101
The number of used connections is 101% of the configured maximum.
You should raise max_connections
MEMORY USAGE
Max Memory Ever Allocated : 1.63 G
Configured Max Per-thread Buffers : 1.20 G
Configured Max Global Buffers : 426 M
Configured Max Memory Limit : 1.61 G
Physical Memory : 3.96 G
Max memory limit seem to be within acceptable norms
KEY BUFFER
Current MyISAM index space = 108 M
Current key_buffer_size = 384 M
Key cache miss rate is 1 : 3157
Key buffer free ratio = 85 %
Your key_buffer_size seems to be fine
QUERY CACHE
Query cache is enabled
Current query_cache_size = 32 M
Current query_cache_used = 18 M
Current query_cache_limit = 1 M
Current Query cache Memory fill ratio = 59.10 %
Current query_cache_min_res_unit = 4 K
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 = 8 M
Sort buffer seems to be fine
JOINS
Current join_buffer_size = 132.00 K
You have had 53627 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 = 4096 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 = 512 tables
You have a total of 4104 tables
You have 512 open tables.
Current table_cache hit rate is 1%, while 100% 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 1081722 temp tables, 35% were created on disk
Effective in-memory tmp_table_size is limited to max_heap_table_size.
Perhaps you should increase your tmp_table_size and/or max_heap_table_size
to reduce the number of disk-based temporary tables
Note! BLOB and TEXT columns are not allow in memory tables.
If you are using these columns raising these values might not impact your
ratio of on disk temp tables.
TABLE SCANS
Current read_buffer_size = 2 M
Current table scan ratio = 1537 : 1
read_buffer_size seems to be fine
TABLE LOCKING
Current Lock Wait ratio = 1 : 1545
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
همانطور که مطلع هستید این خروجی ها را میباید در etc/my.cnf ذخیره کرد و سپس دستور service mysql restart را احرا نمود.
موفق باشیدB-)