Locating Performance Bottlenecks

[HSLAB]

Once you have brought your Dynamo system up to maximum throughput, you
can look at the components of the system to determine which components
are limiting factors in performance.

Monitoring System Utilization

Use a program like top (on Solaris), the Windows Performance Monitor,
or a more sophisticated tool to keep track of information like:

* CPU utilization
* paging activity
* disk I/O utilization
* network I/O utilization

A well-performing site will have high CPU utilization when the site is
achieving its maximum throughput and will not be doing any paging. A
site with high I/O activity and low CPU utilization has some I/O
bottleneck.

Read more at
http://www.hs-lab.com/usage/faq/content/9/18/en/locating-performance-bottlenecks.html