Ask Slashdot: Performance Monitoring for Linux

muadib wants to know about the following: "Given the current discussions on tuning, I am trying to find out if there are any performance monitoring applications for Linux. I don't mean things like xload, xosview, etc which provide only a small amount of data. For anyone who's done benchmarking under NT, I mean something like their built in perfmon utility that lets you view and capture just about any statistic on your system or on a remote system. Capturing is the specific functionality I'm looking for b/c I'm working on a Linux device driver, and it would be nice to have historical data of CPU utilization, interrupts/s, etc. so that I can compare complete system perfomance between code revisions."