56,677
社区成员
发帖
与我相关
我的任务
分享关于 数据库连接的问题
数据库连接 占用资源到底有多大呢？
php中的 mysql_connect
如果是这样
连接，关闭 连接，关闭 连接，关闭 连续三次 比一次影响大吗？
php中的 mysql_connect
如果是这样
连接，关闭 连接，关闭 连接，关闭 连续三次 比一次影响大吗？
...全文
请发表友善的回复…
发表回复
iihero_ 2011-03-24
- 打赏
- 举报
[Quote=引用 2 楼 xjwchy 的回复:]
如果并行的话 这样是不是有问题？
[/Quote]
能少关则少关。
如果并行的话 这样是不是有问题？
[/Quote]
能少关则少关。
rucypli 2011-03-24
- 打赏
- 举报
thread_cache_size
How many threads the server should cache for reuse. When a client disconnects, the client's threads are put in the cache if there are fewer than thread_cache_size threads there. Requests for threads are satisfied by reusing threads taken from the cache if possible, and only when the cache is empty is a new thread created. This variable can be increased to improve performance if you have a lot of new connections. Normally, this does not provide a notable performance improvement if you have a good thread implementation. However, if your server sees hundreds of connections per second you should normally set thread_cache_size high enough so that most new connections use cached threads.
How many threads the server should cache for reuse. When a client disconnects, the client's threads are put in the cache if there are fewer than thread_cache_size threads there. Requests for threads are satisfied by reusing threads taken from the cache if possible, and only when the cache is empty is a new thread created. This variable can be increased to improve performance if you have a lot of new connections. Normally, this does not provide a notable performance improvement if you have a good thread implementation. However, if your server sees hundreds of connections per second you should normally set thread_cache_size high enough so that most new connections use cached threads.
xjwchy 2011-03-24
- 打赏
- 举报
如果并行的话 这样是不是有问题？
ACMAIN_CHM 2011-03-11
- 打赏
- 举报
楼主所指的“资源”是什么？
楼主的担心主要是什么？
楼主的担心主要是什么？
