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  • Profilers for ASP.Net Web Applications?

    - by Earlz
    I was recently wanting to do some profiling on an ASP.Net project and was surprised to see that Visual Studio (at least seems to be) lacking a profiler. So my question is what profiler do you use for ASP.Net? Are there any decent ones out there that are free? I've seen a few general .Net profilers but have yet to see one that can be used with ASP.Net..

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  • The .NET Legacy

    - by Xencor
    Assume you are taking over a legacy .NET app. pre - 3.0 What are the top 5 diagnostic measures, profiling or otherwise that you would employ to assess the health of the application?

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  • Is it possible to profile CPU / memory inside an Adobe AIR application?

    - by dain
    Couldn`t find any ActionScript native APIs even in the beta documentation, am I right supposing that this means the only way to measure CPU / memory consumption is by cooking up a custom native solution, hooking it up with AIR and making it work on each targeted platform? Basically the aim is to be able to have this information available inside AIR and not having to use an external application for profiling, not even Flex / Flash builder.

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  • Compiling in g++ for gprof

    - by myahya
    I do not understand the documentation for gprof regarding how to compile your program for profiling with gprof. In g++, is it required to compile with the -g option (debugging information) in a addition to the -pg option or not. In each case I get different results, and I would like to see where the bottlenecks in my application are in release mode, not in debug mode, where many optimizations are left out by the compiler (e.g. inlining)

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  • How to find virtualization performance bottlenecks?

    - by Martin
    We have recently started moving our C++ build server(s) from real machines into VMs. (MS Hyper-V) We have some performance issues that I've currently no idea how to address. We have: Test-Box - this is a piece of desktop workstation hardware my co-worker used to set up the VM before we moved it to the actual server hardware Srv-Box - this is the server hardware Test-Box-Real - This is Windows running directly on the Test-Box HW Test-Box-VM - This is Windows in a Hyper-V VM on the Test-Box HW Srv-Box-Real- This is Server2008R2 running on the Srv-Box HW. Srv-Box-VM- This is Windows running in a Hyper-V VM on the Srv-Box HW, i.e. on Srv-Box-Real. Now, the problem is that we compared Build times between Test-Box-Real and Test-Box-VM and they were basically equal (within about 2%). Then we moved the VM to the Srv-Box machine and what we saw there is that we have a significant performance degradation between Srv-Box-Real and Srv-Box-VM, that is, where we saw no differences on the Test HW we now do see major differences in performance on the actual Server HW. (Builds about ~~ 50% slower inside the VM.) I should add that both the Test-Box and the Srv-Box are only running this one single VM and doing nothing else. I should also note that the "Real" OS is Win2008R2(64bit) and the VM hosted OS is Wind2003R2(32bit). Hardware specs: Srv-Box: Intel XEON E5640 @ 2.67Ghz (This means 8 cores with hyperthreading on the Real system and "only" 4 cores on the VM, since Hyper-V doesn't allow for hyperthreading, but number of cores doesn't seem to explain the problem here.) 16GB RAM (we have 4GB assigned to the VM) Virtual DELL RAID 1 (2x 450GB HUS156045VLS600 Hitachi 15k SAS drives) Test-Box: Intel XEON E31245 @ 3.3GHz 16GB RAM WD VelociRaptor 600GB 10k RPM SATA Note again that I'm only concerned with the differences between Srv-Box-Real and Srv-Box-VM (high) vs. the differences seen btw. Test-Box-Real and Test-Box-VM (low). Why would one machine have parity when comparing VM vs Real performance and the other (server grade HW no less) would have a large disparity? (Both being XEON CPUs ...)

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  • Better Flex memory profiling tools

    - by verveguy
    Does anyone know of any better tools that the Flex Builder Profiler? I've googled and googled to no avail. While the FB tools are OK for small apps / small leak situations, they're nowhere near adequate for wading through the thicket of object references that can arise in a large scale Flex app (that is leaking memory heavily). In particular, any reasonably complex view structure ends up with huge numbers of parent/child object references to the top level view - none of which are at all relevant to finding the one or two refs from outside the parent child subgraph that are causing the whole bolus to be non-GC'able. If no one has any better suggestions, I'm seriously considering writing a tool to parse the saved profile dumps that Flex Builder can generate so that I can do my own "graph pruning" to find the important refs. If I go this route, collaboration would be welcome!

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  • profiling WCF services with visual studio profiler

    - by ashish.s
    I am trying to profile a WCF service using visual studio profiler. So i created a profile by choosing asp.net application, and gave it the url of the web service. When i launch the session, it launches a web page to the site. I then run my unit test using another visual studio client, but the test always fails with with communication exception, and the process that performance analyze is attached to exits out. if i run the test again, it attached the process again, but the tests still fails with communication exception. This is throwing my report off since its only accounting for the startup work that the application is supposed to do. can someone point out what i am doing wrong ?

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  • Unexplained CPU and Disk activity spikes in SQL Server 2005

    - by Philip Goh
    Before I pose my question, please allow me to describe the situation. I have a database server, with a number of tables. Two of the biggest tables contain over 800k rows each. The majority of rows are less than 10k in size, though roughly 1 in 100 rows will be 1 MB but <4 MB. So out of the 1.6 million rows, about 16000 of them will be these large rows. The reason they are this big is because we're storing zip files binary blobs in the database, but I'm digressing. We have a service that runs constantly in the background, trimming 10 rows from each of these 2 tables. In the performance monitor graph above, these are the little bumps (red for CPU, green for disk queue). Once ever minute we get a large spike of CPU activity together with a jump in disk activity, indicated by the red arrow in the screenshot. I've run the SQL Server profiler, and there is nothing that jumps out as a candidate that would explain this spike. My suspicion is that this spike occurs when one of the large rows gets deleted. I've fed the results of the profiler into the tuning wizard, and I get no optimisation recommendations (i.e. I assume this means my database is indexed correctly for my current workload). I'm not overly worried as the server is coping fine in all circumstances, even under peak load. However, I would like to know if there is anything else I can do to find out what is causing this spike? Update: After investigating this some more, the CPU and disk usage spike was down to SQL server's automatic checkpoint. The database uses the simple recovery model, and this truncates the log file at each checkpoint. We can see this demonstrated in the following graph. As described on MSDN, the checkpoints will occur when the transaction log becomes 70% full and we are using the simple recovery model. This has been enlightening and I've definitely learned something!

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  • Windows system monitoring and profiling

    - by Aris
    I have several dozen 64-bit Windows 2003 servers in a high performance environment with very bursty system utilization. I am looking for a tool (or tools) to monitor and analyze system performance (eg, CPU utilization, bandwidth, etc). This tool can either query servers from a central location (SNMP) or require installation of a component on each server. It should poll on a 1-second interval. It should be able to generate pretty graphs which show trends over time. As a nice-to-have, it should be able to send out emails or IMs when certain thresholds are exceeded. The tools I have investigated so far, including Solarwinds and PRTG, are not designed to poll this frequently. They seem to be designed for a ~30-second interval. Solarwinds wouldn't go lower than 3-sec, and PRTG chokes at 1-sec. They both default to 1-min. All three tools seem more focused on outage monitoring and reporting than metric collection. Given the bursty nature of our applications, such infrequent polling would result in a very inaccurate picture of performance. I am considering rolling my own solution using perfmon. This would be a lot of work, and seems like reinventing the wheel. Are there any tools out there that meet my needs?

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  • CPU and profiling not supported for remote jvisualvm session

    - by yawn
    When monitoring a remote app (using jstatd) I can neither profile nor monitor cpu consumption. Heap monitoring (provided I do not use G1) works. jvisualvm provides the message "Not supported for this JVM." in the CPU graph window. Is there anything missing in my setup? The google showed up next to no results. The local environment (Mac OS X 10.6): java version "1.6.0_15" Java(TM) SE Runtime Environment (build 1.6.0_15-b03-219) Java HotSpot(TM) 64-Bit Server VM (build 14.1-b02-90, mixed mode) The remote environment (Linux version 2.6.16.27-0.9-smp (gcc version 4.1.0 (SUSE Linux))): java version "1.6.0_16" Java(TM) SE Runtime Environment (build 1.6.0_16-b01) Java HotSpot(TM) 64-Bit Server VM (build 14.2-b01, mixed mode) Local monitoring works as advertised.

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  • Why does "commit" appear in the mysql slow query log?

    - by Tom
    In our MySQL slow query logs I often see lines that just say "COMMIT". What causes a commit to take time? Another way to ask this question is: "How can I reproduce getting a slow commit; statement with some test queries?" From my investigation so far I have found that if there is a slow query within a transaction, then it is the slow query that gets output into the slow log, not the commit itself. Testing In mysql command line client: mysql begin; Query OK, 0 rows affected (0.00 sec) mysql UPDATE members SET myfield=benchmark(9999999, md5('This is to slow down the update')) WHERE id = 21560; Query OK, 0 rows affected (2.32 sec) Rows matched: 1 Changed: 0 Warnings: 0 At this point (before the commit) the UPDATE is already in the slow log. mysql commit; Query OK, 0 rows affected (0.01 sec) The commit happens fast, it never appeared in the slow log. I also tried a UPDATE which changes a large amount of data but again it was the UPDATE that was slow not the COMMIT. However, I can reproduce a slow ROLLBACK that takes 46s and gets output to the slow log: mysql begin; Query OK, 0 rows affected (0.00 sec) mysql UPDATE members SET myfield=CONCAT(myfield,'TEST'); Query OK, 481446 rows affected (53.31 sec) Rows matched: 481446 Changed: 481446 Warnings: 0 mysql rollback; Query OK, 0 rows affected (46.09 sec) I understand why rollback has a lot of work to do and therefore takes some time. But I'm still struggling to understand the COMMIT situation - i.e. why it might take a while.

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  • How to do hooking in Java? [closed]

    - by chimpaburro
    A hook is a process running to get data from another (more info), well the case was that I wanted to get the methods or functions using any application for access to a network, these methods are usually WSAConnect (), WSASendTo (), bind (), connect () and sendto () [these are the ones that need to get to the application]. I started testing, creating Runtime [Runtime.getRuntime (). exec (...)] with all possible methods [addShutdownHook (...);] and now I'm trying to ProcessBuilder [new ProcessBuilder (...);] and the famous BufferedReader [new BufferedReader (new InputStreamReader (proceso.getInputStream ()));] but I could not find the way to do it. Sorry for my bad English..

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  • How do I profile the startup process in OS X 10.5?

    - by Alex Mcp
    When I bought my MBP 2.2 GHZ in 2007, it got from dead to an active dock in about 18 seconds, and now it takes about 1:30 to get a fully responsive home screen. I want to find a way to profile the various things it does when it starts up so I can begin tuning it a bit. Any good software or other recommendations for this process?

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  • Problems to connect Java visualVM to a EC2-instance

    - by kasten
    I'm trying to profile a AWS EC2 instance via visualVM. The instance is in a securitygroup which allows all connections and i'm runing jstatd with a grant codebase "file:${java.home}/../lib/tools.jar" { permission java.security.AllPermission; }; policy on it. When i try to connect from my local machine with visulVM nothing happens. When i use jps i get the following response $ jps -l -m -v rmi://ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com Error communicating with remote host: Connection refused to host: xxx.xxx.xxx.xxx; nested exception is: java.net.ConnectException: Connection timed out But i can ssh into the instance and use jps locally. Has anyone a pointer in which direction i can debug further?

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  • How do I identify resource hogs on Firefox?

    - by Tarrasch
    I have installed a package of Firefox extensions that installed a few extensions to my Firefox. Recently I have noticed, that the resource consumption of the Firefox process rose to unacceptable levels for my rather weak Laptop. How can I identify the add-ons responsible for this? I do not want to uninstall all the add-ons since I think some of them really make my life easier. Is there a way to profile my Firefox plugins, preferably over a period of time?

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  • Simple time profiling - strange times

    - by Gacek
    I'm trying to profile my code to check how long it takes to execute some parts of my code. I've wrapped my most time-consuming part of the code in something like that: DateTime start = DateTime.Now; ... ... // Here comes the time-consuming part ... Console.WriteLine((DateTime.Now - start).Miliseconds); The program is executing this part of code for couple of seconds (about 20 s) but in console I get the result of something about 800 miliseconds. Why is that so? What am I doing wrong?

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  • PHP: Profiling code and strict environment ~ Improving my coding

    - by DavidYell
    I would like to update my local working environment to be stricter in an effort to improve my code. I know that my code is okay, but as with most things there is always room for improvement. I use XAMPP on my local machine, for simplicities sake Apache Friends XAMPP (Basic Package) version 1.7.2 So I've updated my php.ini : error_reporting to be E_ALL | E_STRICT to help with the code standard. I've also enabled the XDebug extension zend_extension = "C:\xampp\php\ext\php_xdebug.dll" which seems to be working, having tested some broken code and got the nice standard orange error notice. However, having read this question, http://stackoverflow.com/questions/133686/what-is-the-best-way-to-profile-php-code and enabled the profiler, I cannot seem to create a cachegrind file. Many of the guides that I've looked at seem to think you need to install XDebug in XAMPP which leads me to think they are out of date, as XDebug is bundled with XAMPP these days. So I would appreciate it if anyone can help point me in the right direction with both configuring XDebug to output grind files, and or just a great set of default settings for the XDebug config in XAMPP. Seems there is very little documentation to go on. If people have tips on integrating these tools with Netbeans, that would be awesomesauce. I'm happy to get suggestions on other things that I can do to help tighten up my php code, both syntactically and performance wise Thanks, and apologies for the rambling question(s)! Ninja edit I should menion that I'm using named vhosts as my Apache configuration, which I think is why running XDebug on port 9000 isn't working for me. I guess I'd need to edit my vhost to include port 9000

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  • Celery - minimize memory consuption

    - by Andrew
    We have ~300 celeryd processes running under Ubuntu 10.4 64-bit , in idle every process takes ~19mb RES, ~174mb VIRT, thus - it's around 6GB of RAM in idle for all processes. In active state - process takes up to 100mb of RES and ~300mb VIRT Every process uses minidom(xml files are < 500kb, simple structure) and urllib. Quetions is - how can we decrease RAM consuption - at least for idle workers, probably some celery or python options may help? How to determine which part takes most of memory?

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  • Client-based program to track response time for online webservice

    - by Søren Haagerup
    I am helping a customer with general IT support, and they have a problem with a hosted web-based system being slow. The provider of the system blames the client's computer, and the client calls me for help. I blame the provider, but it is hard to get them to do something about it without rock-solid evidence. And every time the provider comes around for a TeamViewer session, everything of course runs smoothly. Does there exist a client program or browser plugin that tracks statistics about response time for specific web services?

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