J2EE Performance Profiling
So I've been trying to track down some performance issues with my applications on MVS, Unix and Windows. I'm not using any professional J2EE profilers yet, but a co-worker of mine wrote some perf logging stuff using Aspectwerkz' AOP stuff.
It bogs the app down, but I can get method level performance monitoring.
It's pretty tedious tracking down performance problems in a huge application.
So far, I've used Microsoft's Web Application Stress Tool. They released this thing years ago for free, and it's still about as good as Mercury's LoadRunner or Rational's load testing stuff. The advantage of MS' is that it is free and lightweight enough to run on any windows PC. It basically records HTTP scripts and runs them from 1-100 or so simultaneous "user" threads. It can kill any app pretty quickly and is useful for simulating a load on any app.
Any performance profiling tips are appreciated. Most of the stuff I've read is vague and stupid like "Look for memory leaks" or "Identify the bottleneck" blah blah blah.
I'm also reading David Mitchell's Ghostwritten
and Rudyard Kipling's Kim
. So far so good. Recommend something for when I finish these guys.
So I'm going on a cruise this week and I'll be out of the country. This probably means that the quality of this site will increase while I'm away.
Oh yeah, audioscrobbler.com is really cool. I just need modify the windows plug-in so it tracks songs listened to on the ipod.
I use MicroSoft Money 2005. I bought this version to get auto downloads from MBNA and Citibank. Of course this didn't work because each time I downloaded the statement it marked every transaction as brand new and autoaccepted them. This of course sucked as I had to go in and delete all the duplicate downloads every time it updated. I emailed Microsoft and they basically said that I'm screwed and that they have no fix for the problem. Wait for 2006 I guess.
Anyway, my workaround is to write my own app to screen scrape the data from MBNA and Citibank (and theoretically any site) and import into money. If anyone has any ideas let me know.
This is the first post for the new year.
I'm a software architect and I come across all sorts of technical bugs, techniques, fixes etc. I frequently find that I can't google for the answer and have to actually (shudder) figure it out for myself. To save other poor souls from having to suffer through the same pain, I'll get to post answers here so fellow googlers can find the answer.
So for any J2EE/Unix/Windows/MVS (I know I know, I thought it was extinct too)/Oracle/DB2/WebSphere/WebLogic/Oracle App Server/Open Source/etc etc ask me any questions or stay tuned as I update this site from time to time.