profiling

问题 Is there a "live" memory profiler tool (similar to Instruments in XCode) for Android? Most searches for memory profiling, leads me to Memory Analyzer Tool (which is great), but I would very much appreciate a tool which can dynamically show me which classes consume (and release) memory during the life-cycle of my application, as it is executing. Note: I am not looking for a memory profiling tool for Android (Memory Analyzer Tools works very well for me). All the methods/tools I have

问题 Is there a "live" memory profiler tool (similar to Instruments in XCode) for Android? Most searches for memory profiling, leads me to Memory Analyzer Tool (which is great), but I would very much appreciate a tool which can dynamically show me which classes consume (and release) memory during the life-cycle of my application, as it is executing. Note: I am not looking for a memory profiling tool for Android (Memory Analyzer Tools works very well for me). All the methods/tools I have

问题 I'm making an app that relies on CoreAnimation. It has got a CAReplicatorLayer and as a sublayer a CAShapeLayer. When having 12 replications and then animating the path (changing it on touchMoved) there's a significant reduction in FPS once the graphics get bigger on screen (about 12-20 fps). The time profiler shows about 10 % CPU Utilization, the Open GL ES Driver profiler reports about 90-97% "Render Utilization" and 40-50 % "Tiler Utilization". This guide explains these two words but not

问题 My Codeigniter system uses multiple databases. I don't need every database on every page, so I load each connection in the model where it's needed, then load the required models within each controller. The profiler does not display any of the queries from these databases when I load things this way. This is how I load the databases in my models: $this->Companies_db = $this->load->database( 'companies', TRUE, TRUE ); I used to load all my databases in MY_Controller() ( an extension of the core

问题 I have essentially done the following: import cProfile, pstats, StringIO pr = cProfile.Profile() pr.enable() # ... my code did something ... pr.disable() s = StringIO.StringIO() sortby = 'cumulative' ps = pstats.Stats(pr, stream=s).sort_stats(sortby) ps.dump_stats('stats.dmp') # dump the stats to a file named stats.dmp So now i have the file named 'stats.dmp' stored offline. How can i use pstats to analyze this file for human consumption? Thanks in advance. 回答1: Here's what i found out and

问题 How do I enable Magento Profiler in the admin area? I've set the admin option, added Varien_Profiler::enable(); before Mage::run($mageRunCode, $mageRunType); and cleared cache, but the profiler results only show in frontend? Am I missing something else? 回答1: Check that profiler is enabled as well in the default configuration scope in System > Configuration > Developer and that Developer IP Restrictions are empty or configured correctly. Edit: Based on this being the accepted answer, it's

问题 Is there a way of profiling only slow PHP pages on a production server? At the moment we're logging slow pages to a text file, but without more information it's hard to say why they're slow (not consistently slow). I've used the Xdebug profiler before, but I really don't want to enable this on our production servers as we are likely to get 100's of requests per second. I've also used Zend Platform, but I don't really want to install that again. 回答1: You might alter your Apache/HTTP Server

问题 Recently we started stress testing our application (an XMPP based chat server) using YJP 11.0.9. During our test we noticed following strange behavior. Sampling shows sun.misc.Unsafe.unpark(Object) took 60% of CPU. For the same app Tracing shows that LockSupport.park(Object) took 52% of CPU. I did multiple tests to confirm results and every time I got similar results. I am unable to understand why unpark should take 60% time and why tracing shows exactly opposite results. Can someone help me

问题 In the process of using gprof to profile a C++ program I've written, I've noticed that the vast majority of execution time is spent in the function "frame_dummy". More precisely, the first entry in the flat profile from the output of gprof shows 76.38% of sample time spent in and 24611191 calls to a function with name frame_dummy. In short, I am trying to understand both what frame_dummy refers to -- as I do not have any function named as such -- as well as what this means for my optimization

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . I come from a Matlab background so I am used to a profiler which profiles every single line and not just every function like gprof or callgrind . Is there a profiler for C with a similar feature? Thanks! (source: jburkardt at people.sc.fsu.edu) 回答1: Shark, one of the profiling tools in Mac OS X, can do that (or