3/15/2023 0 Comments Jprofiler tutorial videothis makes it a good tool for identifying the critical path. for each method you can expand the callers and methods being invoked. the more expensive the call, the darker it will be. In this graph, each method gets a color according to its' contribution to the overall performance. You may also choose to see it as a call graph: this graph is updated every 5 seconds while the program executes. you can expand the call and see which methods invoked it and, for each of those methods, what was its' share in the overall performance cost. In this view, the most expensive calls are sorted in a descending order. when analyzing my execution time, the most helpful tool was the "hot spots" view: My focus was on execution time of a simple java program, so the default option worked best for me. once you get the hang of it, you can start exploring the custom options, but i found the predefined settings totally sufficient for my needs. once you select an option you'll see some explanation in the dialog itself, so there's no need to start looking for documentation. You can choose from predefined settings or use a custom settings. going into the profile settings, you get an assortment of configuration options: if you change any of the profiling parameters, these bars will reflect the change. What i like most about this window is the two lower bars that give you an estimate on how intensive this profiling session is going to be in terms of memory and cpu usage. the first screen is the session startup, which is the first dialog you get when you launch a new profiling session. i took a few screenshots to show how simple yet powerful is jprofiler. I'm not an expert user and my experience with jprofiler is limited. you don't need to buy an additional license for that: you can remotely profile your application across the supported platforms (windows, mac, linux, solaris, aix and hp-ux) without running jprofiler on the remote machine. i even tried it on windows, as well and it works exactly the same. i don't need any special preparation or setup: i just launch jprofiler using my existing launch configuration and a couple of minutes later i have the results. Since then, i had a chance to use jprofiler on a number of occasions and it just works: profile, find the problem, fix and retest. as i wrote earlier, about 50% faster with a couple more fixes i did that day. about half an hour later, i was running much faster. it took me another half an hour to explore all the views and understand where i can start cutting execution time. it took me less than half an hour to start profiling (including the download and installation), without any prior knowledge of the product and without reading any documentation. at this point, you'll be transferred to jprofiler to start the profiling session. in eclipse, you use the "profile" command, which uses the same "launch configurations" as the "run" and "debug" commands. like other profilers, jprofiler integrates with the ide, supporting eclipse and intellij. I downloaded jprofiler and installed it using the provided installer. It displays the information while the program is running, as opposed to other tools i've used, where you have to stop the analysis to get some results. Relatively low execution overhead with many profiling options (instrumentation, sampling, etc.) and highly configurable settings. Provides all the information you will desire with extensive views and predefined filters to make sure you'll get just the information you need. Very simple to use, compared to tools in its' class. its' integration with eclipse leaves much to be desired. jprofiler is not the prettiest tool you can find. most of the tools are focused on memory analysis, while i needed execution time analysis. most of them were buggy, some eventually worked but did not produce enough information or produced too much information, which is just as bad. i found thisĪnd wasted about 3-4 hours running through it. none of them worked well. just to be clear: a simple tool would be a tool i can install and use without reading a manual. tptp is a good, solid, tool but it is not a simple one to install and use. however, tptp is no longer an option for me since it does not support mac os x. in the past, i have used theĮclipse test & performance tools platform at the end of the day, i managed to cut the execution time of some processes by 50% and more, by usingĪs an eclipse user and a strong oss supporter, i first started searching for the open source alternatives. after tackling some obvious pain-points, i had to turn to help of a profiler. A couple of weeks ago i found myself in a position which is well known to any professional java developer: my software was simply too slow.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |