I could use some advice on tracking down the cause of memory leaks in C#. I understand what is a memory leak and I get why they occur in C# but I'm wondering what tools/strategies have you used in the past to resolve them? I am using .NET Memory Profiler and I've found that one of my huge main objects is staying in memory after I close ...
How is profiling different from logging? Is it just that profiling is used for performance measurements to see how long each function takes? Or am I off? Typically, how are profiling libraries used? What types of stats are obtained by profiling? ...
A classic ASP.NET app - AppSrv + MS SQL DB. Both servers are heavy-lifters 8 cores, 20 GB of RAM. When load testing, the throughput goes somewhere to 400 VirtualUsers (according to LoadRunner) with CPU being approximately 30% utilized an DB server primarily idling - response times go dramatically up, to the point of unresponsive. The us...
I have some legacy code that uses VBA to parse a word document and build some XML output; Needless to say it runs like a dog but I was interested in profiling it to see where it's breaking down and maybe if there are some options to make it faster. I don't want to try anything until I can start measuring my results so profiling is a m...
Is there anything out there freeware or commercial that can facilitate analysis of memory usage by a PHP application? I know xdebug can produce trace files that shows memory usage by function call but without a graphical tool the data is hard to interpret. Ideally I would like to be able to view not only total memory usage but also wh...
My application has a WCF service tier between the front-end and the database. Since we currently host in IIS6 we are using SOAP over HTTP. How can I find out how much real world time I am spending doing serialization activities in my application? ...
Hi folks The activity monitor in sql2k8 allows us to see the most expensive queries. Ok, that's kewl, but is there a way I can log this info or get this info via query analyser? I don't really want to have the Sql Management console open and me looking at the activity monitor dashboard. I want to figure out which queries are poorly wri...
If something is making a single-thread program take, say, 10 times as long as it should, you could run a profiler on it. You could also just halt it with a "pause" button, and you'll see exactly what it's doing. Even if it's only 10% slower than it should be, if you halt it more times, before long you'll see it repeatedly doing the unnec...
I've been trying to use Firebug's profiler to better understand the source of some JavaScript performance issues we are seeing, but I'm a little confused by the output. When I profile some code the profiler reports Profile (464.323ms, 26,412 calls). I suspect that the 464.323ms is the sum of the execution time for those 26,412 calls. H...
I've heard a lot about profiling. What is this all about? As far as I understand this is some kind of performance measurement but can someone elaborate this on more clearly so that a newbie can grasp the idea. Also, I use Eclipse IDE for my Java program. Can I profile my program using Eclipse IDE? What are the factors to be considered wh...
What's the best method for benchmarking the performance of my various templates when using Template::Toolkit? I want something that will break down how much cpu/system time is spent processing each block or template file, exclusive of the time spent processing other templates within. Devel::DProf, for example, is useless for this, sin...
Suppose that I have a Java program within an IDE (Eclipse in this case). Suppose now that I execute the program and at some point terminate it or it ends naturally. Is there a convenient way to determine which lines executed at least once and which ones did not (e.g., exception handling or conditions that weren't reached?) A manual way...
I need to get time in milliseconds. Please advise. ...
I have a medium sized application written in c++ using QT. I wanted to profile things to see where my least performant code was so I compiled everything with -pg. However, my application makes use of a lot of plugins using the QTPlugin mechanism (boils down to a dlopen and a dlsym of a instance object per plugin). I've noticed that gpro...
How do Window's programmers profile their native C++ code? On Unix/Linux you have gprof [thanks Evan] & valgrind (I personally used this one, although it's not a real profiler), and recently I'm on Mac and Solaris, which means I moved to dTrace. Now when I've had the need to profile on Windows in the past, like at my previous job, I used...
I have a legacy JBoss 4.0.4/EJB 2.1/PostgreSQL system with zillions of "transaction scripted" procedures as server EJB methods, and many of them have very slow and clumsy execution times due to bad programming practices (like creating temporary tables everytime, etc). Is there something I can plug in JBoss (Aspect-Like) to monitor the e...
I'm compiling a vc8 C++ project in a WinXp VmWare session. It's a hell of a lot slower than gcc3.2 in a RedHat VmWare session, so I'm looking at Task Manager. It's saying a very large percentage of my compile process is spent in the kernel. That doesn't sounds right to me. Is there an equivalent of strace for Win32? At least somethin...
In the past, and intermittently now, I've used simulation tools like Easy Java Simulations and NetLogo. They are great tools for visually modeling various mathematical/comp-sci concepts because "all you have to do" is write the simulation loop - the graphics, etc are handled for you. However, one thing I have noticed is that improving ...
I'm new to Shark, and I was wondering if it's possible to narrow down a time sample to one specific method? Let's say I'd like to, just for the sake of it, know how much resources have been used on calls to the method 'count' for all NSArray (or subclasses) instances. ...
Hey, I've got an ASP.NET application running and on the production box it's using about 450MB RAM, however, it shouldn't be using quite so much, and it seems to increase over time, so it seems there might be a leak or atleast something not being released properly. I took a look with PerfMon and there was 416MB in GC Gen2. Anyone hav...