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  • What is "Virtual Size" in sysinternals process explorer

    - by robert
    Hi My application runs for few hours, There is no increase in any value ( vmsize, memory) of Task Manager. But after few hours i get out of memory errors. In sysinternals i see that "Virtual Size" is contineously increasing, and when it reach around 2 GB i start getting memory errors. So what kind of memory leak is that ? How can i demonstrate it with a code ? Is it possible to reproduce same thing with any piece of code where none of the memory value increase but only the Virtual Size in sysinternsl process explorer increase ? thanks for any suggestions

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  • what is the best way to generate fake data for classification problem ?

    - by Berkay
    i'm working on a project and i have a subset of user's key-stroke time data.This means that the user makes n attempts and i will use these recorded attempt time data in various kinds of classification algorithms for future user attempts to verify that the login process is done by the user or some another person. (Simply i can say that this is biometrics) I have 3 different times of the user login attempt process, ofcourse this is subset of the infinite data. until now it is an easy classification problem, i decided to use WEKA but as far as i understand i have to create some fake data to feed the classification algorithm. can i use some optimization algorithms ? or is there any way to create this fake data to get min false positives ? Thanks

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  • Linux PDF/Postscript Optimizing

    - by Sheldon Ross
    So I have a report system built using Java and iText. PDF templates are created using Scribus. The Java code merges the data into the document using iText. The files are then copied over to a NFS share, and a BASH script prints them. I use acroread to convert them to PS, then lpr the PS. The FOSS application pdftops is horribly inefficient. My main problem is that the PDF's generated using iText/Scribus are very large. And I've recently run into the problem where acroread pukes because it hits 4gb of mem usage on large (300+ pages) documents. (Adobe is painfully slow at updating stuff to 64 bit). Now I can use Adobe reader on Windows, and use the Create Print PDF option or whatever its called, and it greatly( 10x) reduces the size of the PDF(it removes alot of metadata about form fields and such it appears) and produces a PDF that is basically a Print image. My question is does anyone know of a good solution/program for doing something similiar on Linux. Ideally, it would optimize the PDF, reduce size, and reduce PS complexity so the printer could print faster as it takes about 15-20 seconds a page to print right now.

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  • Android Cursor size

    - by Deborah Kim
    Hey, Anyone knows how to change cursor size in Edittext in Anroid??? I'm trying to implement SMS function. I used EditText and tried to put background image. The background image has lines so I need to put extra space between lines so that the background image and the lines fit nicely. But... if I use linespacingextra, it increase cursor as well. That means the fontsize will be smaller than the cursor size. Any idea??

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  • How to set initial window size in Java OpenGL

    - by tommy-susanto
    Hi guys... I just built a Java OpenGL application in Eclipse... and when i was trying to export the application using EclipseP5Exporter, it requires me to initialize the window size (not viewport size, a window may contain several viewports). I already googled some solutions in the net but I can't seem to get anything useful.. I've tried the method : "glutInitWindowSize(int width, int height);" but it seems to work only in C and python openGL. even if i append the glut before the method (glut.glutInitWindowSize()) eclipse doesn't recognize that method.. So if you guys have any suggestions please let me know... Thank you....

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  • Size of int in C on different architectures

    - by NawaMan
    I am aware that the specification of the C language does not dictate the exact size of each integer type (e.g., int). What I am wondering is: Is there a way in C (not C++) to define an integer type with a specific size that ensures it will be the same across different architectures? Like: typedef int8 <an integer with 8 bits> typedef int16 <an integer with 16 bits> Or any other way that will allow other parts of the program to be compiled on different architecture.

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  • WPF layout with several fixed height parts and certain parts relative to window size

    - by Daniil Harik
    Hello, At moment my main layout consists of vertically oriented stack panel and it looks like this: Root StackPanel StackPanel - fixed Height 150 (horizontal orientation) StackPanel - relative Height must be behalf of free space left on screen (but at least 150 px). Used by Telerik GridView Control, if I don't specify Height or MaxHeight Telerik GridView Height becomes very large and does not fit my window. StackPanel - fixed Height 100 (horizontal orientation) StackPanel - relative Height must be half of free space left on screen (but at least 150 px). Used by Telerik GridView Control, if I don't specify Height or MaxHeight Telerik GridView Height becomes very large and does not fit my window. StackPanel - fixed Height 100 (horizontal orientation) The view must totally fit available screen size. The problem is that I don't understand how to make certain areas of my view resize depending on available screen size. Is there is easy way to solve it, or should I be binding to Window height property and doing math? Thank You very much!

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  • Tuples of unknown size/parameter types

    - by myahya
    I need to create a map, from integers to sets of tuples, the tuples in a single set have the same size. The problem is that the size of a tuple and its parameter types can be determined at runtime, not compile time. I am imagining something like: std::map<int, std::set<boost::tuple> > but not exctly sure how to exactly do this, bossibly using pointers. The purpose of this is to create temporary relations (tables), each with a unique identifier (key), maybe you have another approach.

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  • Is there any way to get MSVC to pass structs arguments in registers on x64?

    - by Luke
    For a function with signature: struct Pair { void *v1, *v2 }; void f(Pair p); compiled on x64, I would like Pair's fields to be passed via register, as if the function was: void f(void *v1, void *v2); Compiling a test with gcc 4.2.1 for x86_64 on OSX 10.6, I can see this is exactly what happens by examining the disassembly. However, compiling with MSVC 2008 for x64 on Windows, the disassembly shows that Pair is passed on the stack. I understand that platform ABIs can prevent this optimization; does anyone know any MSVC-specific annotations, calling conventions, flags, or other hacks that can get this to work? Thank you!

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  • size of view not changing after frame change

    - by MikeNelson
    I have managed to do pretty complex things on iPhone but I am always stuck with views, frames, bounds, and simple stuff that defies any logic and don't work as expected. I have a self.view in my code and it has a lot of subviews on it. At some point of the code, I need to reduce the frame vertically to a specific size and later put it back as before. Then I have this code: [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:1.5]; // frame is changing to a newHeight (other parameters are the same as before) self.view.frame = CGRectMake (0, 0, originalWidth, newHeight); [UIView commitAnimations]; The result is simply, nothing. The view continues as before. The same size, the same position. No change. Why this kind of thing happens? how to solve that?

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  • How to optimize MATLAB loops?

    - by striglia
    I have been working lately on a number of iterative algorithms in MATLAB, and been getting hit hard by MATLAB's performance (or lack thereof) when it comes to loops. I'm aware of the benefit of vectorizing code when possible, but are there any tools for optimization when you need the loop for your algorithm? I am aware of the MEX-file option to write small subroutines in C/C++, although given my algorithms, this can be a very painful option given the data structures required. I mainly use MATLAB for the simplicity and speed of prototyping, so a syntactically complex, statically typed language is not ideal for my situation. Are there any other suggestions? Even other languages (python?) which have relatively painless matrix tools are an option.

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  • Estimate serialization size of objects?

    - by Stefan K.
    In my thesis, I woud like to enhance messaging in a cluster. It's important to log runtime information about how big a message is (should I prefer processing local or remote). I could just find frameoworks about estimating the object memory size based on java instrumentation. I've tested classmexer, which didn't come close to the serialization size and sourceforge SizeOf. In a small testcase, SizeOf was around 10% wrong and 10x faster than serialization. (Still transient breaks the estimation completely and since e.g. ArrayList is transient but is serialized as an Array, it's not easy to patch SizeOf. But I could live with that) On the other hand, 10x faster with 10% error doesn't seem very good. Any ideas how I could do better?

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  • Custom size app screen on iPad

    - by mosdev
    I am trying to create a mid-size screen for my app on iPad. In didFinishLaunchingWithOptions(), I do this: CGRect winRect = CGRectMake(100,100,500,500); navController.view.frame = winRect; the screen comes up fine and I can click around and do stuff until the orientation changes. It takes the screen to original full size - how can I make it stick to my winRect frame? I tried setting the parentViewController.view.frame/view.frame to winRect in willRotateToInterfaceOrientation() but no good. Any ideas? Thanks.

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  • C++ defines for a 'better' Release mode build in VS

    - by darid
    I currently use the following preprocessor defines, and various optimization settings: WIN32_LEAN_AND_MEAN VC_EXTRALEAN NOMINMAX _CRT_SECURE_NO_WARNINGS _SCL_SECURE_NO_WARNINGS _SECURE_SCL=0 _HAS_ITERATOR_DEBUGGING=0 My question is what other things do fellow SOers use, add, define, in order to get a Release Mode build from VS C++ (2008,2010) to be as performant as possible? btw, I've tried PGO etc, it does help a bit but nothing that comes to parity, also I'm not using streams, the C++ i'm talking about its more like C but making use of templates and STL algorithms. As it stands now very simple code segments flop when compared to what GCC produces on say an equivalent x86 machine running linux (2.6+ kernel) using 02. Side-Note: I believe a lot of the issues relate directly to the STL version (Dinkum) provided by MS. Could people please elaborate on experiences using STLPort etc with VS C++.

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  • increasing amazon root volume size

    - by OCD
    I have a default amazon ec2 instance with 8GB root volume size. I am running out of space. I have: Detach the current EBS volume in AWS Management Console (Web). Create snapshot of this volume. Created a new Volume with 50G space with my snapshot. Attach the new volume back to the instance to /dev/sda1 However, when I reconnect to the account with: > df -h I can see from the management console that my new Filesystem 1K-blocks Used Available Use% Mounted on /dev/xvda1 8256952 8173624 0 100% / tmpfs 308508 40 308468 1% /dev/shm It's still not using my new volume's size, how to make this work?

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  • Newbie question - MySQL index size

    - by Tommy
    I've just started to investigating how I should optimize my database. Indexing seems to be a good idea, so I want to index a VARCHAR column, the engine is MyISAM. From what I've read, I understand that an index is limited to a size of 1000 bytes. A VARCHAR character is 3 bytes in size. Does this mean that if I want to index a VARCHAR column with 50 rows, I need an index prefix of 6 characters? I came to that number by dividing 1000 with the row number 50, then the bytesize per character that is 3. 1000/50/3=6,66. It seems a little complicated, so I'm just wondering if I'm thinking right? It seems weird to me that you'd only be able to index 333 rows in a VARCHAR column, using a prefix of 1 character.

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