Obrigado pelas respostas!
Pessoal consegui instalar o MySQLTuner, e ele mostrou os resultados abaixo!
>> MySQLTuner 1.6.0 - Major Hayden <major@mhtx.net>
>> Bug reports, feature requests, and downloads at http://mysqltuner.com/
>> Run with '--help' for additional options and output filtering
[--] Skipped version check for MySQLTuner script
[OK] Currently running supported MySQL version 5.5.42-cll
[OK] Operating on 64-bit architecture
-------- Storage Engine Statistics -------------------------------------------
[--] Status: +ARCHIVE +BLACKHOLE +CSV -FEDERATED +InnoDB +MRG_MYISAM
[--] Data in MyISAM tables: 1G (Tables: 7284)
[--] Data in InnoDB tables: 46M (Tables: 288)
[!!] Total fragmented tables: 169
-------- Security Recommendations -------------------------------------------
[OK] There is no anonymous account in all database users
[OK] All database users have passwords assigned
[!!] User 'novatabela@%' hasn't specific host restriction.
[!!] User 'novatabela@%' hasn't specific host restriction.
[!!] User 'novatabela@%' hasn't specific host restriction.
[!!] User 'novatabela@%' hasn't specific host restriction.
[!!] User 'novatabela@%' hasn't specific host restriction.
[!!] User 'novatabela@%' hasn't specific host restriction.
[--] There is 605 basic passwords in the list.
-------- Performance Metrics -------------------------------------------------
[--] Up for: 1h 21m 11s (286K q [58.758 qps], 8K conn, TX: 9B, RX: 35M)
[--] Reads / Writes: 96% / 4%
[--] Binary logging is disabled
[--] Total buffers: 168.0M global + 2.8M per thread (151 max threads)
[OK] Maximum reached memory usage: 223.0M (5.63% of installed RAM)
[OK] Maximum possible memory usage: 583.2M (14.73% of installed RAM)
[OK] Slow queries: 0% (0/286K)
[OK] Highest usage of available connections: 13% (20/151)
[OK] Aborted connections: 0.00% (0/8452)
[!!] Query cache is disabled
[OK] Sorts requiring temporary tables: 0% (10 temp sorts / 43K sorts)
[!!] Joins performed without indexes: 667
[!!] Temporary tables created on disk: 65% (9K on disk / 14K total)
[!!] Thread cache is disabled
[!!] Table cache hit rate: 0% (400 open / 260K opened)
[OK] Open file limit used: 4% (691/17K)
[OK] Table locks acquired immediately: 99% (276K immediate / 276K locks)
-------- MyISAM Metrics -----------------------------------------------------
[!!] Key buffer used: 77.9% (6M used / 8M cache)
[OK] Key buffer size / total MyISAM indexes: 8.0M/146.7M
[OK] Read Key buffer hit rate: 99.7% (37M cached / 101K reads)
[OK] Write Key buffer hit rate: 99.6% (5M cached / 24K writes)
-------- InnoDB Metrics -----------------------------------------------------
[--] InnoDB is enabled.
[OK] InnoDB buffer pool / data size: 128.0M/46.7M
[OK] InnoDB buffer pool instances: 1
[!!] InnoDB Used buffer: 41.31% (3384 used/ 8192 total)
[OK] InnoDB Read buffer efficiency: 99.27% (447815 hits/ 451116 total)
[!!] InnoDB Write buffer efficiency: 0.00% (0 hits/ 1 total)
[OK] InnoDB log waits: 0.00% (0 waits / 1941 writes)
-------- AriaDB Metrics -----------------------------------------------------
[--] AriaDB is disabled.
-------- Replication Metrics -------------------------------------------------
[--] No replication slave(s) for this server.
[--] This is a standalone server..
-------- Recommendations -----------------------------------------------------
General recommendations:
Run OPTIMIZE TABLE to defragment tables for better performance
Restrict Host for user@% to user@SpecificDNSorIp
MySQL started within last 24 hours - recommendations may be inaccurate
Enable the slow query log to troubleshoot bad queries
Adjust your join queries to always utilize indexes
When making adjustments, make tmp_table_size/max_heap_table_size equal
Reduce your SELECT DISTINCT queries without LIMIT clauses
Set thread_cache_size to 4 as a starting value
Increase table_open_cache gradually to avoid file descriptor limits
Read this before increasing table_open_cache over 64: http://bit.ly/1mi7c4C
Beware that open_files_limit (17000) variable
should be greater than table_open_cache ( 400)
Variables to adjust:
query_cache_size (>= 8M)
join_buffer_size (> 128.0K, or always use indexes with joins)
tmp_table_size (> 16M)
max_heap_table_size (> 16M)
thread_cache_size (start at 4)
table_open_cache (> 400)
Bom, provavelmente eu terei que editar o aquivo /etc/my.cnf tentei pelo ssh e não deu ele ficou em branco!
Baixei ele pelo ftp e apareceu essas configurações.
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
innodb_file_per_table=1
max_allowed_packet=268435456
open_files_limit=17000
default-storage-engine=MyISAM
VI NO LINK INDICADO QUE O CARA COLOCOU ASSIM NO ARQUIVO!
key_buffer_size=196M
sort_buffer=1M
join_buffer=1M
max_join_size=2M
thread_concurrency=16
thread_cache=5
table_cache=2000
interactive_timeout=45
wait_timeout=45
max_heap_table_size=128M
tmp_table_size=2G
query_cache_limit=1M
query_cache_size=512M
max_connections=500
max_user_connections=30
innodb_buffer_pool_size=128M
innodb_file_per_table=1
innodb_log_file_size=5M
innodb_thread_concurrency=4
Bom amigos, gostaria de saber:
- Se eu posso somente colar essas configurações no meu arquivo my.cnf e fazer upload dele?
- Realmente é esse o problema do roundcube estar caindo toda hora?
- O servidor usa "eu acho" somente 30% da memória ram, depois dessa configuração vou precisar comprar mais memória?
Obrigado a atenção de todos!