JPROFILER 7 LICENSE KEY HOW TO
JPROFILER 7 LICENSE KEY CODE

Move up the stack trace (that is, the big tree of method calls) and look at your own code. If the method that’s bright red is something low-level like reading a stream, you’re not going to make that faster. Keep expanding the long bar until you get to something with a significant amount of bright red. (At the top level, it’s all dark red.) Bright-red represents the time spent within this method, and dark-red is the time spent in methods called by this method.įind the long bar at the top and expand the node. There are two components in the bar: dark-red and bright red. The longer the bar, the more time it’s spending there. The CPU view shows you a big tree of where your app spends its time. Now for the delicate bit, where I can’t show you screenshots because of improprietary. Proceed with profiling! You want the CPU View (left-hand toolbar).

JPROFILER 7 LICENSE KEY HOW TO

That way it knows how to divide the bar into dark red and bright red for all the methods in your code. Here’s the trick about the filters: the instrumentation will record the time spent in your methods (the ones included by the filter) and the time spent in all methods directly called by those methods.

JPROFILER 7 LICENSE KEY CODE

The code in your running application is re-instrumented so that classes selected by your filters record their activities. Once you click OK on the Session Settings and select “Apply Now”, magic happens. On the filters page, make sure that old Excluded filter is gone and only your Included filter (or filters) remains. Focus on what you control!Ĭlick OK on that. If there’s another package that holds code controlled by your team or your organization, check that too. Basically, expand the com node, find your company’s name, and check that. It’s tempting to pick all kinds of interesting ones, but start small. Now comes the critical part: selecting the classes we care about.

Change this - push the green “+” button on the right, and from the popup menu pick “Add filters from package browser.” (This won’t work if the profiling session is not connected to an app, because it needs to query the java process for its classpath.) Initially, the filters are set up with some default excludes. In there, pick Filter Settings (button along the left toolbar). Visit the Session Settings (button along the top toolbar). As it points out (in JProfiler7), good filters are critical for instrumentation, and filters are the focus of this post.īefore you get serious with the profiling, give the filters a useful initial setting. If it asks you to choose between Instrumentation or Sampling, pick Instrumentation. Get the profiling going, because you can’t set up the filters properly until it’s hooked up. If I cover by experience in detail, it’ll be in a separate post. There are several ways to do this, and the documentation is not especially helpful. This is a commercial product You can get a ten-day evaluation license for free, and use what you learn to convince your managers to pay for a permanent one. This post will show you how to do that.įirst, you need JProfiler. The key was setting the filters correctly. This week I had a major success improving the performance of our application, thanks to some judicious use of JProfiler.

Jprofiler 7 license key