I currently use WebFaction for my hosting with the basic package that gives us 80MB of RAM. This is more than adequate for our needs at the moment, apart from our backups. We do our own backups to S3 once a day. The backup process is this: dump the database, tar.gz all the files into one backup named with the correct date of the backup...
Several people have asked, in a roundabout way, but I have yet to see a workable solution. Is there any way to open an excel file directly from memory (like a byte[]) ? Likewise is there a way to write a file directly to memory? I am looking for solutions that will not involve the hard disk or juggling temporary files. Thanks in adva...
I am playing with an MSDN sample to do memory stress testing (see: http://msdn.microsoft.com/en-us/magazine/cc163613.aspx) and an extension of that tool that specifically eats physical memory (see http://www.donationcoder.com/Forums/bb/index.php?topic=14895.0;prev_next=next). I am obviously confused though on the differences between Vir...
I'm designing a real-time system that occasionally has to duplicate a large amount of memory. The memory consists of non-tiny regions, so I expect the copying performance will be fairly close to the maximum bandwidth the relevant components (CPU, RAM, MB) can do. This led me to wonder what kind of raw memory bandwidth modern commodity ma...
Should I always release self when there is a failure inside init, or should I only do so if I have initialized instance variables first? To put it another way, is this pattern valid? Is there a time when I shouldn't release self inside an init method, or should I assume that if the control flow enters init, self has at least a retain co...
I've done some searching, but can't seem to find a way to do this. We'd like to proactively monitor our permgen space via JMX. It seems the best way to do this is through the UsageThreshold attribute on the "PS Perm Gen" MemoryPool. By default, this is set to 0. Is there a way to specify this, or any JMX attribute, as a -D parameter to...
I have UIScrollView with number of subviews. Each subview is custom UIButton with UIImage. When I load more and more subviews, more and more memory is used. But I remove invisible subviews by removeFromSuperView method. Subviews are removed and stay invisible, but Im afraid that no memory is released. UIImage is image downloaded from int...
I've done a lot of research on when it's correct to release things, but it's all confusing to me. I think sometimes the Leaks program is off. Anyway... background is a UIImageView background.image = [UIImage imageNamed:@"greenbackground.png"]; Do I have to release background? I never alloced it and it's not set as a property, so I...
So I've now progressed to having an almost functioning wrapper. Other posts regarding my wrapper issues are: http://stackoverflow.com/questions/2430089/c-wrapper-and-callbacks & http://stackoverflow.com/questions/2444687/c-wrapper-for-array-of-three-pointers I use the wrapper to establish a connection to the Dallmeier using the follow...
Hi, I am developing a Graph-class, based on boost-graph-library. A Graph-object contains a boost-graph, so to say an adjacency_list, and a map. When monitoring the total memory usage of my program, it consumes quite a lot (checked with pmap). Now, I would like to know, how much of the memory is exactly consumed by a filled object of thi...
Here is a puzzle that has got me baffled. We are running a Citrix server that provides access to two other servers, let's call them Application Server E and Application Server C. Each Application server is running the identical Tomcat environment. Users access through a web browser, a java based application (an applet). In one me...
I'm trying to learn C++ currently, but I'm having issues with the code below. class Vector2 { public: double X; double Y; Vector2(double X, double Y) { this->X = X; this->Y = Y; }; SDL_Rect * getSdlOffset() { SDL_Rect * offset = new SDL_Rect(); offset->x = this->X; of...
I am working on an image generation script in PHP and have gotten it working two ways. One way is slow but uses a limited amount of memory, the second is much faster, but uses 6x the memory . There is no leakage in either script (as far as I can tell). In a limited benchmark, here is how they performed: -------------------------------...
Hi Guys, I have to check memory performance of my application, I have solved Leaks now I want to improve the performance of memory. So, please tell me the process how can I fix and improve the memory performance. Thank You. ...
I have a MySQL innodb database at 1.9GB, showed by following command. SELECT table_schema "Data Base Name" , sum( data_length + index_length ) / 1 048 576 as "Data Base Size in MB" , sum( data_free )/ 1 048 576 as "Free Space in MB" FROM information_schema.TABLES GROUP BY table_schema ; +-------------------...
Hi! I have a code that need to be "translated" from C to Cpp, and i cant understand, where's a problem. There is the part, where it crashes (windows critical error send/dontSend): nDim = sizeMax*(sizeMax+1)/2; printf("nDim = %d sizeMax = %d\n",nDim,sizeMax); hamilt = (double*)malloc(nDim*sizeof(double)); printf("End hamilt alloc. ...
I've been reading up on memory models in an assembly book I picked up and I have a question or two. Let's say that the address bus has 32 lines, the data bus has 32 lines and the CPU is 32-bit (for simplicity). Now if the CPU makes a read request and sends the 32bit address, but only needs 8 bits, all 32 bits come back anyway? Also, t...
I've been getting into some assembly lately and its fun as it challenges everything i have learned. I was wondering if i could ask a few questions When running an executable, does the entire executable get loaded into memory? From a bit of fiddling i've found that constants aren't really constants? Is it just a compiler thing? const...
I have 2 variable like below char s='s'; char Kaazoooombaa ='s'; how can I know which variable is consuming how much space ? ...
Hi. I am trying to find a memory leak using ants memory profiler, and I've encountered in a new term: Pinned objects. Can some one give me a good & simple explanation about what this objects are, How can I pinn/Unpinn objects, and detect who pinned objects? Thanks ...