Archive for the ‘Tools’ Category
I’ve just sent an email to the Maatkit discussion list to announce a planned change to how Maatkit (and Aspersa) are developed. In short, Percona plans to create a Percona Toolkit of MySQL-related utilities, as a fork of Maatkit and Aspersa. I’m very happy about this change, and I welcome your responses to that thread on the discussion list.
New Relic just announced the release of new features that track client-side (front-end) performance, including network time, DOM processing time, and total render time in the browser.
This is really great functionality. If you aren’t using New Relic, you really ought to. It is a web interface to application profiling. It helps you be scientific about performance analysis without knowing it, because the functionality and the user interface make the right thing so obvious you won’t even realize you’re being methodical and focusing on what matters. And it’s got a free introductory level that isn’t crippled. A great product just got greater.
This isn’t really a problem with iostat(1M) – it’s a great tool for system administrators to understand the usage of their resources. But the applications are far, far away from the disks – and have a complex file system in-between. For application analysis, iostat(1M) may provide clues that disks could be causing issues, but you really want to measure at the file system level to directly associate latency with the application, and to be inclusive of other file system latency issues.