MySQL CPU Kullanımı my.cnf optimizasyonu

[iyinet]

Raiden´isimli üyeden Alıntı

smf ve hazır portallar mevcut onlarda sanırım mutlaka vardır innodb seçeneği ona göre yazabilirseniz sevinirim. teşekkür ederim

asagidaki ayarlari [mysqld] altina ekleyin:

innodb_buffer_pool_size=64M
innodb_additional_mem_pool_size=32M
innodb_thread_concurrency=8
innodb_flush_method=O_DIRECT

Genele:
Innodb kullanan arkadaslar, [mysqld] altina bellek boyutlarina gore asagidaki innodb ayarlarini ekleyebilirler.

1Gb ve alti bellek icin:
innodb_buffer_pool_size=64M
innodb_additional_mem_pool_size=32M
innodb_thread_concurrency=8
innodb_flush_method=O_DIRECT

2Gb bellek icin:
innodb_buffer_pool_size=256M
innodb_additional_mem_pool_size=64M
innodb_thread_concurrency=8
innodb_flush_method=O_DIRECT

4Gb bellek icin: (Innodb kullanimi cok ise 384M, 1024M e kadar arttirilabilir)
innodb_buffer_pool_size=384M
innodb_additional_mem_pool_size=96M
innodb_thread_concurrency=8
innodb_flush_method=O_DIRECT

[Raiden]

ellerine sağlık..

[ShanGaL]

iyinet´isimli üyeden Alıntı

[mysqld] altini asagidaki sekilde degistir, diger bolumler ayni kalsin.

[mysqld]
default-character-set=latin5
port = 3306
socket = /var/lib/mysql/mysql.sock
skip-locking
skip-name-resolve
query_cache_size=50M
query_cache_type=1
query_cache_limit = 4M
key_buffer = 32M
max_allowed_packet = 64M
max_connections=300
table_cache = 5000
thread_cache_size = 128
low_priority_updates = 1

Dediğini yaptığımda load 10 dan aşağı inmemeye başLadı Eskisi gibi yapınca düştü eski yerine.

[atay]

Makine özellikleri:

P4 3.0
2 GB ram
CentOS 4
Plesk 8 (Innodb kullanıyor)

Şu anki my.cnf:

[mysqld]
set-variable=local-infile=0
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1

[mysql.server]
user=mysql
basedir=/var/lib

[mysqld_safe]
err-log=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

Nasıl optimize etmem gerektiği hakkında yönlendirirseniz sevinirim.

[iyinet]

ShanGaL´isimli üyeden Alıntı

Dediğini yaptığımda load 10 dan aşağı inmemeye başLadı Eskisi gibi yapınca düştü eski yerine.

tuning-primer ciktiniza bakarsaniz mysql e baglanamayan kullanicilar oldugunu goreceksiniz.
Baglanti sayisini arttirarak mysql i daha cok kullaniciya actiniz.
MySQL i kullanicilara kapatirsaniz load dusuk olacaktir haliyle.
max_connections=1
yapin load cok daha asagilara dusecektir

[iyinet]

atay´isimli üyeden Alıntı

Makine özellikleri:

P4 3.0
2 GB ram
CentOS 4
Plesk 8 (Innodb kullanıyor)

Şu anki my.cnf:




Nasıl optimize etmem gerektiği hakkında yönlendirirseniz sevinirim.

@atay, once http://forum.iyinet.com/mysql-verita...-ayarlari.html başlığındaki hazır ayarlardan uygun olanını kullan.
Ardından 2-3 gün sonra mysql performans raporunu alarak sonuçları postala. Gerekirse ek ayar yapalım.

[mrtcbks]

Selam iyinet my.cnf çıktım aşagıdaki gibi

[mysqld]
set-variable = max_connections=500
safe-show-database

Makina özelliklerime gelince
Intel Xeon-Harpertown 5420-Quadcore
4 işlemci 2.5ghz ve her işlemcide 6mb cache var 4 GB ram kullanmakta sunucu sizce nasıl bir uygulama yapabiliriz? forum siteleri mevcut sunucu üzerinde.

Teşekkürler

[iyinet]

mrtcbks´isimli üyeden Alıntı

Selam iyinet my.cnf çıktım aşagıdaki gibi

[mysqld]
set-variable = max_connections=500
safe-show-database

Makina özelliklerime gelince
Intel Xeon-Harpertown 5420-Quadcore
4 işlemci 2.5ghz ve her işlemcide 6mb cache var 4 GB ram kullanmakta sunucu sizce nasıl bir uygulama yapabiliriz? forum siteleri mevcut sunucu üzerinde.

Teşekkürler

@mrtcbks, once bellege gore mysql my.cnf ayarlari başlığındaki hazır ayarlardan uygun olanını kullan.
Ardından 2-3 gün sonra mysql performans raporunu alarak sonuçları postala. Gerekirse ek ayar yapalım.

[mrtcbks]

-- MYSQL PERFORMANCE TUNING PRIMER --
- By: Matthew Montgomery -
MySQL Version 4.1.22-standard i686
Uptime = 0 days 6 hrs 7 min 37 sec
Avg. qps = 76
Total Questions = 1680984
Threads Connected = 3
Warning: Server has not been running for at least 48hrs.
It may not be safe to use 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/...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 17 out of 1681014 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/4.1/...-recovery.html
WORKER THREADS
Current thread_cache_size = 128
Current threads_cached = 126
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine
MAX CONNECTIONS
Current max_connections = 750
Current threads_connected = 2
Historic max_used_connections = 173
The number of used connections is 23% of the configured maximum.
Your max_connections variable seems to be fine.
MEMORY USAGE
Max Memory Ever Allocated : 634 M
Configured Max Per-thread Buffers : 1 G
Configured Max Global Buffers : 170 M
Configured Max Memory Limit : 2 G
Physical Memory : 3.95 G
Max memory limit seem to be within acceptable norms
KEY BUFFER
Current MyISAM index space = 816 M
Current key_buffer_size = 128 M
Key cache miss rate is 1 : 491
Key buffer fill ratio = 45.00 %
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 = 32 M
Current query_cache_used = 30 M
Current query_cache_limit = 4 M
Current Query cache Memory fill ratio = 96.12 %
Current query_cache_min_res_unit = 4 K
However, 449262 queries have been removed from the query cache due to lack of memory
Perhaps you should raise query_cache_size
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 = 132.00 K
You have had 4699 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 = 6760 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 = 3000 tables
You have a total of 972 tables
You have 669 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 27559 temp tables, 4% 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 = 2484 : 1
read_buffer_size seems to be fine
TABLE LOCKING
Current Lock Wait ratio = 1 : 279
You may benefit from selective use of InnoDB.


Bu arada mysql % 117 şu an teşekkürler

[iyinet]

@mrtcbks, my.cnf de eklermisin.