目前我已經構建了一個PHP腳本來將大型數據集導入到Innodb表中。 該腳本從文件讀取記錄,構建多個查詢(數據高度關聯)並將其插入數據庫。我在一個新的用一個內核和2GB內存構建的debian虛擬機上創建了這個腳本。PHP-MYSQL-Innodb緩慢插入
要清楚,新鮮我的意思是這是一個乾淨的圖像,只有包mysql-server mysql-client和php5安裝。
在數據文件的虛擬機2(每個60MB +)中運行腳本時,在8秒鐘內完成超過5,000條記錄。
然後我將這個腳本移到了當前存放數據的服務器上,並且將保存數據庫。該服務器擁有28GB RAM和2個XEON(6核)處理器。這也是全新安裝,默認安裝了mysql-client,mysql-server和php5-cli。清楚的是,當腳本開始並且服務器沒有運行除SSH和標準系統進程以外的其他進程時,數據庫爲空。
在此服務器上運行腳本時,其移動速度非常慢(30秒,僅插入180條記錄)。
我試過在my.cnf文件中跳過名字解析,但它似乎什麼都不做。當腳本運行時,如果我在mysql中查看進程列表,我會在「釋放項目」狀態中不斷查看插入查詢。任何關於什麼可能導致經濟放緩的想法?
這裏是服務器的問題給予::
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
[mysqld]
#
# * Basic Settings
#
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
language = /usr/share/mysql/english
skip-external-locking
skip-name-resolve
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 127.0.0.1
#
# * Fine Tuning
#
key_buffer = 16M
max_allowed_packet = 16M
thread_stack = 192K
thread_cache_size = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover = BACKUP
#max_connections = 100
#table_cache = 64
#thread_concurrency = 10
#
# * Query Cache Configuration
#
query_cache_limit = 1M
query_cache_size = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file = /var/log/mysql/mysql.log
#general_log = 1
#
# Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
#
# Here you can see queries with especially long duration
#log_slow_queries = /var/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
# other settings you may need to change.
#server-id = 1
#log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
如果您需要準確答案,您可能需要提供更多信息。這個問題可能與你的mysql配置文件... – Jocelyn 2012-08-09 21:34:53
它可能是任何數量的東西。還有什麼在服務器上運行?什麼是網絡流量?公羊使用?哪些cron作業正在運行?數據庫中有多少行?你的數據庫模式是什麼?等等等...請嘗試本地化你的問題,並提出具體的問題。我們無法登錄到您的服務器併爲您解決問題。 – cegfault 2012-08-09 23:29:25
顯示準備並將SQL插入到db的代碼 – itsols 2012-08-10 01:01:29