太多连接用于在mysql中插入数据

Question

I am aksing about too many connections in mysql server and phpmyadmin, as data speed per hour ~1000 from source in my database. When I TOP on server, mysqld shows 100-145% cpu utilization also lots of php threads are running there , as data insertion through php script. My question is, is there any mechanism through which connections are not overflow and mysql server utilize cpu as low as possible. since I am using VPS server but it is not so effective to use another application on vps, because mysql server takes 100% cpu. Sometime phpmyadmin crashes and shows some folk error. I have read query cache mechanism, but it is used for caching same select queries, should i use this for insert or is there any other optimal solution kind of queue mechanism . Also, i can't say about on which time insert data speed is low or high, if it knows then i can try queue mechanism. Thanks in advance!

Answer 1

Check your codes and see if you have something like

for($i = 0; $i < 10000; $i++) // basicly long loop with inserts
    mysql_query("INSERT INTO table_name (id, value) VALUES ({$i}, 100)");

This should be altered to something like

$arr_values = array();
for($i = 0; $i < 10000; $i++)
    $arr_values[] = "({$i}, 100)";

$str_values = implode(', ', $arr_values);

mysql_query("INSERT INTO table_name (id, value) VALUES {$str_values}");

Basicly be aware of unneeded queries in your code.

Answer 2

您应该从以下链接mysql_query缓存中获得有关“ QUERY CACHE”的基本概念