![[Movie] Transscript: 'Thanks for checking out mod_top. Here
we are looking at the mod_top display monitoring a SugarCRM
application running under load in a production environment. The
overhead on mod_top is low enough that it can be run continuously
and you can check out the data using this client whenever you
like. Now I'm wondering what is using all the CPU on this server,
and that is the default sorting. The screen refreshes by default
every 2 seconds, and the data is added up for each period. So here
I can see that in a two second period we have XX calls to blah,
and the CPU time taken is 300 milliseconds. If I'm wondering which
things get called the most I can sort by Count, and here I can see
the most freqently called right now is foo. And to find memory
consumption I can sort by Memory by pushing M and see that this
function Blah is taking up 50KB. Today mod_top monitors the
internals of PHP with low overhead and a very simple install so
please fill out our survey and give it a try! Let us know what you
think, and vote for which part of the LAMP stack we should work on
next.'](gfx/movie.png)
mod_top is a production monitoring tool for LAMP applications with user interfaces modeled after the popular unix top. mod_top plans to support PHP, Perl, Ruby, Python, mySQL, Postgres, Apache1+2 on Linux.
Download it now!
mod_top can help you:
- locate bottlenecks in applications
- troubleshoot high memory consumption
- understand CPU utilization under load
- diagnose causes of slowness or heavy resource utilization
- discover database dependencies
- impress your friends with your efficient scalable code
Check out the screenshots to see some ways people are using mod_top.
The latest version of mod_top is 0.5 which monitors PHP 4.4 and PHP 5.x applications.
Installation is simple: Just download, untar, and make, then create one symlink and add a line to your php.ini file. See also our installation instructions.
Please let us know what you think!
