TCMalloc(Thread-Caching Malloc)是google开发的开源工具──"google-perftools"中的成员。与标准的glibc库的malloc相比,TCMalloc在内存的分配上效率和速度要高得多,可以在很大程度上提高MySQL服务器在高并发情况下的性能,降低系统负载。
原文作者: Peter Zaitsev
原文来源: http://www.mysqlperformanceblog.com/2006/05/17/mysql-server-memory-usage
译者:叶金荣(http://imysql.cn/node/97)
Every so often people ask me the question how should they estimate memory consumption by MySQL Server in given configuration. What is the formula they could use.
经常有人问我配置MySQL时该如何估算内存的消耗。那么该使用什么公式来计算呢?
It appears this configuration wasn’t working with HAProxy version 1.3.20 due to the “option nolinger” feature. I have removed it from the configuration and can confirm it works well with HAProxy v.1.3.15 to v.1.3.20. Because of this, you’ll also notice a significant increase in TIME_WAIT sessions, as well as ip_conntrack_count increasing from ~150 to ~925.
mytop - a top clone for MySQL
mytop is a console-based (non-gui) tool for monitoring the threads and overall performance of a MySQL 3.22.x, 3.23.x, and 4.x server. It runs on most Unix systems (including Mac OS X) which have Perl, DBI, and Term::ReadKey installed. And with Term::ANSIColor installed you even get color. If you install Time::HiRes, you'll get good real-time queries/second stats. As of version 0.7, it even runs on Windows (somewhat).
It is quite useful and interesting too.
VIRT 的上限是64G,也就是36位, cat /proc/cpuinfo的结果是:addre
昨天要准备用线程重写webbench,试验了下Fedora Linux 2.6.35.14
不明白您的具体的意思是什么?
已经发送到你QQ邮箱
http://www.2mysite.net/scriptencoder/screnc.asp 站长你好,看
你好,我发现一个问题,就是从mysqld2同步过来的数据,在mysqld1的
晕,我说是怎么回事情,原来我和你一样,忘记设置了活动分区