Some data collection display

August 21, 2014 MYSQL, performance No comments , , ,

Reference Oracle AWR. These two was developed by python and perl.

Both of these are following data collection method.

Use these tools can help[……]

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MongoDB not preallocate journal log

June 19, 2014 mongodb, NoSQL No comments

在安装mongodb 2.6.2的时候发现一个奇怪的问题 RS 节点的journal log并没有提前分配.我们知道在安装mongodb的时候
mongo总是会预先分配journal log 启用smallfile的时候默认为128MB 否则会分配1GB的journal log


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