All generalizations are incorrect Charles Suresh's blog

Although I will go into the details of how the MySQL/Innodb/ZFS read-only performance was improved almost 5x using SSDs for L2ARC, this blog is primarily focused on understanding why I got that improvement for the configuration that I was using. I'll also discuss why the tuning tip I mentioned in my previous blog entry, of matching the ZFS block size to the database record size, is not such a good idea for this particular test.[Read More]

In some cases, system performance can be improved simply by reducing wasteful work. So in this blog, I talk about tools and techniques you can use to find if your system is doing more I/O than necessary and what you can do about it.[Read More]