Heap Memory Visualization - c

I was wondering if there is a way to visualize (inside Visual Studio) how much of the heap memory I'm using during the execution of my program.
Thanks

Use the Memory Usage Diagnostic Tool in Visual Studio: https://learn.microsoft.com/en-us/visualstudio/profiling/memory-usage?view=vs-2019
The Memory Usage tool lets you take one or more snapshots of the
managed and native memory heap to help understand the memory usage
impact of object types. You can collect snapshots of .NET, native, or
mixed mode (.NET and native) apps.
Here's a great blog article on its usage as well: https://devblogs.microsoft.com/visualstudio/analyze-cpu-memory-while-debugging/

Related

Memory profiling with automation testing?

Currently adding some automation testing to our UI framework, and I was wondering if there was any way to perform some kind of memory profiling at the same time.
e.g. rather than having white start our application, have it start dotmemory (or another memory diagnostics tool) get a snapshot and then begin performing the automation tests.
I know this wouldn't track down memory leaks as such, but we could use it as an indicator if there's a spike in memory somewhere.
If anyone knows of a way to kick this off it would be very helpful, even if we had to use visual studios built in memory profiler rather than dot memory.
Not a perfect solution, but managed to find this while googling around.
https://www.jetbrains.com/help/dotmemory-unit/2.3/Introduction.html
Still getting to grips with making it work, but seems promising.

performance testing C application Ubuntu

We have an C application which is not written by me. We need to measure the performance in terms of CPU and memory usage.
I have never done the performance test, therefore I am not aware of tools which can be used to get the CPU and memory consumption details.
I tried to search SO and google but I am not sure what to use and how to do.
It would be of great help to me if I can get some guidance here.
EDIT:
I am not looking for profilers which I understand tells about the performance of code blocks. I just want to monitor the resources consumed by the application. We are not going to improve the code. This is just for comparison with other products.
It's something what task manager shows in windows about each process. Just that I want.
I found few tools like nmon, munin, collectd, collectl but still confused how to use them. Trying to understand but any help appreciated.
Thanks

Can VS2010 help me find memory leaks?

I'm going through the pain right now of finding memory leaks in my application using WinDbg. Luckily, I've found a few good articles that give a very good step-by-step process of how to do it. Still, it is a fairly painful process. Does VS2010 have any built in features that can ease the burden of finding a memory leak in a Silverlight application? Of course, a memory leak in .NET sounds a bit like a misnomer, but what I intend to do is to find all objects that are still referencing an object that I believe should be garbage collected.
For those that may be interested, here are some good articles on how to get started using WinDbg to find memory leaks in Silverlight:
Finding Memory Leaks In Silverlight With WinDbg
Hunting down memory leaks in Silverlight
Where's your leak at? (Using WinDbg, SOS, and GCRoot to diagnose a .NET memory leak)
A Memory leak in .NET applications isn't a misnomer at all. I've had this problem in applications I've worked on, both Winforms and Webforms.
WinDbg + SOS.dll is painful compared to the ANTS Profiler. Normally I wouldn't tout a product, but if you're working for a company, they will save a lot of money by buying that product. It'll save you time having to look for memory leaks, and developer time is almost always more expensive than purchasing an application.
I don't thing VS 2010 has this; I remember Microsoft did have http://memprofiler.com/ as a memory profiler for finding leaks, and there are other third party tools.
HTH.

Silverlight Client Performance and Resource Usage

I'm tempting to use Silverlight 3 tio create a LOB Application but I'm no quite comfortable into measuring client resource usage (CPU and RAM). Is there a way to measure exactly how much RAM /CPU a Silverlight App is using on the client ??? Are there any tools for this ?
use the System.Windows.Analytics class to get the AverageProcessLoad and AverageProcessorLoad
SilverlightSpy measures this, at at high level. I am trying to find similiar tools at the moment and it seems that only Windbg and SOS willget right into the guts of your application :-(

Good Free Alternative To MS Access [closed]

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Consider the need to develop a lightweight desktop DB application on the Microsoft platforms.
It could be done fairly easily with MS Access but I'd like to be able to distribute it to others and I don't want to pay for a runtime license.
Requirements:
easy distribution to others
no runtime licensing issues
Considerations and Candidates:
Base from the OpenOffice suite. My concerns were around its stability.
MySQL + writing custom DB code in C++ or Python or whatever seems like a rather heavy-handed solution.
Question: What are the low cost or free database alternatives to MS Access?
See Also: Open Source Reporting Engines
#Schnapple
Bruceatk kind of hit on what I'm thinking of; it's not so much the DB engine as I want the other niceties that Access brings to the party. The nice form designer, the nice reporting engine etc. But you do raise a very good point about the installation footprint. I had considered that but I've not made any firm decisions about which way I'm going with this yet anyway. It'll probably be something fairly lightweight anyway and a small installation footprint would definitely be a plus.
#Remou,
No I was unaware that the MS Access 2007 runtime is free; thanks for pointing that out. The last time I'd bothered to investigate it (I don't remember when it was) I think it was a fairly expensive license for the runtime because I think they were trying to sell it to Corporate IT departments.
And thanks to everyone else who responded as well; I was completely unaware of those other options you all pointed out.
When people ask about a replacement for Access, a lot of them only think about the database, but what they are really asking about are all of the other features in Access. They usually don't care what database Access is using.
Some of the functionality provided by Access are: Forms, Query Building, Reports, Macros, Database Management, and some kind of language when you need to go beyond what the wizards provide.
SQLite, MySQL, and FireBird are free database back ends. They do not have those additional Access functions built into them. Any free alternatives to Access require you combining something like SQLite and a development language.
Probably the best free option would be SQLite and Visual Basic 2008 or C# 2008 Express Edition. This would have a heavy runtime dependency, so installing on a bare client could take quite the installer.
There really isn't a non-Access option for free with minimum runtime requirements. I wish there was.
I'll be interested in hearing if anybody knows any good alternatives.
Are you aware that the Access 2007 runtime can be downloaded for free?
Links for newer versions:
2010 Runtime
2013 Runtime
2016 Runtime
Schnapple asks:
Are you referring to the concept of a
free database to distribute with an
application, or an Access-like "single
file, no installation" database?
Er, nobody who has any competence with Access application development would ever distribute a single MDB/ACCDB as application/data store. Any non-trivial Access application needs to be split into a front end with the forms/queries/reports (i.e., UI objects) and a back end (data tables only).
It's clear that what is needed here is a database application development tool like Access. None of the database-only answers are in any way responsive to that.
Please learn about Access before answering Access questions:
Access is a database application
development tool that ships with a
default database engine called Jet.
But an Access application can be
built to work with data in almost
any back end database, as long as
there's an ISAM, or an ODBC or OLEDB
driver for that database engine.
Microsoft itself has done a good job of obfuscating the difference between Access (development tool) and Jet (database engine), so it's not surprising that many people don't recognize the difference. But developers ought to use precise language, and when you mean the database engine, use "Jet", and when you mean the front-end development platform, use "Access".
One thing to keep in mind here is the MS Access product is much more than just the raw database engine. It provides a full application development platform, including form and menu designer, client application language and environment (VBA), and report designer. When you take all those things together, MS Access really has no peer.
But for the scope of this question, we're concerned with the raw database engine. With that in mind:
SQLlite,
Firebird,
VistaDB (not free),
SQL Server Compact Edition (not Express)
and now SQL Server LocalDB
all come to mind.
Another thought: while the original question does ask about desktop databases, its likely some people will land here looking for a database to use with a web site. It's important to remember that these are all in-process databases, and as such are rarely if ever appropriate for use on the web. If you want to build a web site, where it's common to need to support significant concurrent access, you generally want a database server engine, like MS SQL, Postgresql, MySQL, Oracle, or their brethren. At the same time, those server engines are rarely if ever appropriate for a single-user desktop application.
To be honest - there aren't any free alternatives to MS Access. At least if you mean database development tool (forms, reports, queries, VBA support etc.). If you think about MS Access as a database engine (you mean MS Jet or ACE in fact) then yes - you have a lot of possibilities. There are a lot of free database engines - the most popular are MySQL and PostgreSQL. I can recommend both - it depends what you want to do.
For writing database frontends C++ is one of the worst choices. You should consider MS Visual C#, MS Visual Basic .NET or... Even Java/Swing (if we are talking about desktop application). If you think about the web-enabled frontend - consider PHP (with MySQL or PostgreSQL on the backend) or ASP.NET (with MSSQL Server at the backend).
I strongly recommend you not to use C++ for such job. This language is very efficient and flexible, but advanced database frontend development with C++ is not the best idea. C++ is great in system programming, games development, maths and physics simulations, everywhere where efficiency is the key - like real-time applications etc. Frontends don't have to be daemons of speed - they should look nice and have advanced end-user features (like sorting, coloring etc.). If you are looking for free tools - maybe C# Express or Visual Basic.NET Express 2008 would be the proper choice? Or maybe Java/Swing (check the NetBeans IDE)? Maybe SharpDevelop? But not C++... Leave C++ for the things it suits the best.
Check out suneido.
I made a fairly complicated GIS app as an experiment with it some years ago (database, complex gui, reports, client/server). It was a pleasant experience (apart from some documentation issues...) and I became productive with it very fast.
I don't use it anymore mainly because:
it's not really general purpose
it's not cross platform (windows only)
I decided to stop exploring exotic
technologies and specialize in something
more mainstream.
Of the Free Software alternatives these haven't been mentioned yet:
Bond
Rekall (not sure about the status of the Windows version currently though)
Glom (Windows version under development)
I'd also keep an eye on what DB RAD tools the Flex/Air community is coming up with, since with those tools it's possible to get unified desktop and web interfaces.
Oracle XE With Application Express.
Has a nice web based gui,
Is a "Real" database
Will scale beyond a single desktop
Offers a clear scale path beyond a small team
Applications as web based, easily accessible.
Can convert Excel spread sheets into Applications
The issue is finding an alternative to MS Access that includes a visual, drag and drop development environment with a "reasonable" database where the whole kit and caboodle can be deployed free of charge.
My first suggestion would be to look at this very complete list of MS Access alternatives (many of which are free), followed by a gander at this list of open source database development tools on osalt.com.
My second suggestion would be to check out WaveMaker, which is sort of an open source PowerBuilder for the cloud (disclaimer: I work there so should not be considered to be an unbiased source of information ;-)
WaveMaker combines a drag and drop IDE with an open source Java back end. It is licensed under the Apache license and boasts a 15,000-strong developer community.
NuBuilder (www.nubuilder.net) might be right.
NuBuilder is a GPLv3-licensed PHP web application that requires MySQL as backend database. Users and programmers both use the web interface.
They promote it as a free, web based MS Access alternative.
I'm creating my second NuBuilder application these days. The NuBuilder seems to be very actively developed, and I found it stable and well documented (provided you can stand video tutorials.)
You may want to look into SQLite (http://sqlite.org/). All depends on your usage though. Concurrency for example is not its greatest virtue. But for example Firefox uses it to store settings etc..
In the context of a programming forum, we don't usually think of the programmer also needing the application portion of the database. Normally a programmer wants to use their own development environment for the business logic and front end, and just use the store, query, retrieval, and data processing capabilities of the database.
If you really want all those other things, then you're talking about a much larger and more complicated run time environment. You're not going to find anything that's 'lightweight' any more. Even MS Access itself no longer qualifies, because it's hardly light weight. It's just lucky in that a lot of users might already have it, making it appear to be light weight.
This doesn't mean you won't find anything. Just that it's not likely to have the same level of maturity or distribution as Access, especially since the underlying access engine is already baked into Windows.
The Access runtime license has never been all that expensive -- the cost for the developer tools/extensions has been around $300 as long as I can remember (which would be as far back to the Access 2 Developers Toolkit, or ADT), but that gives you the ability to distribute your app with the runtime to an unlimited number of users. As long as your runtime app was used by three or more users, you'd have been saving money (assuming a cost of $100/user to install a full copy of Access).
The runtime for Access 2007 is completely free, but really, the cost before that was not all that great.
Marc Gravell added (in what should have been a comment, in my opinion):
Being free, though, is certainly an encouragement for people to try it out which the $300 price really would have discouraged.
VistaDB has an express version which is free to use and is syntax and driver compatible with SQL Server. VistaDB is a single file and only requires their driver .dll to work in your asp.net or winforms project.
Since it is syntax and datasource compatible you can upgrade to SQL Server if needed.
from their site:
VistaDB is a fully managed and
typesafe ASP.NET and WinForms
applications using C#, VB.NET and
other CLR-compliant languages.
VistaDB.net
You mentioned Python, have you considered Dabo?
http://dabodev.com/
That would avoid much of the grunt work in a custom app.
Are you referring to the concept of a free database to distribute with an application, or an Access-like "single file, no installation" database?
As in, things like SQL Server Express Edition require things like runtimes to be installed, databases to be created and mounted, entries on people's Start menus that they won't recognize (my wife asked why SQL Server was on her laptop the other day) whereas an Access database can be run in a single file.
I guess what I'm asking is do you want to think of the database as a document you write to or as an instance of something on someone else's machine?
What about r:Base? Way back in the day r:Base was a very robust DOS (then Windows) RDMBS and this is pre-Access / pre-Paradox days. Its closest competitor was dBase but that wasnt fully relational, at the time. I developed some very nice r:Base applications AND, like Access today, had a built in report generator, forms facility, queries and table manipulation.. To my surprise, its still alive! http://www.rbase.com/ Its got all that access offers, it seems. Might be something for you to consider.
Kexi 2007.1.1 may be what you are looking for.
Its express version is free but DB size limited. Full version cost $72.
The description from its home page:
Kexi is an easy to use application for visual database design for Linux and MS Windows. Kexi competes with MS Access, FoxPro, Oracle Forms and FileMaker.
Visit http://www.kexi-project.org/about.html for details.
Apache Derby is a nice db alternative.
Gambas
Much in line with Aurelio's answer, I now work in Ruby on Rails on some applications that I might formerly have done in MS Access. The back end database for a Rails App. is usually, MySql (works well enough and is available on most shared Web hosting) or PostgreSQL (the better choice when possible).
What about Microsoft's Visual Studio Express?
http://www.microsoft.com/express/default.aspx
SQL Server Express is also at that link...
I'd the same problem of you. I had a MS access application but I wanted to go to a web application accessible to everybody and without paying money to MS. So I decided to use MySql and Wavemaker (open source) to get the scope..I'm very happy of this decision. and that's the result http://www.mara-database.org/
Also check out http://www.sagekey.com/installation_access.aspx for great installation scripts for Ms Access. Also if you need to integrate images into your application check out DBPix at ammara.com
What you appear to be looking for is not just a database program, but a database with forms, reports, etc (basically an IDE of sorts). I would recommend trying OpenOffice.org Base, which comes with the office suite. It's free and open source. It's nowhere near as polished as access, but it does pretty much the same things.
Plus, if you know access, it will be at least somewhat familiar.
http://www.openoffice.org/
EDIT: Sorry, failed to read that you are considering OpenOffice.org. With regard to stability, I've had it crash and do some "odd" things when I played with it, but Access has done the same thing. The best way to find out is to play with it a bit and see if it suits you.
I think the database included with OpenOffice.org has the form designer in it. I've never tried writing code for it though. A forum post I saw had a link to a tutorial they said had some code in it.
I started to set up a database for my wife and the interface was coming out pretty good as far as I could tell.
oooForum.org tutorial
for sqlite, check out the firefox extension. It offers a serviceable GUI.
VistaDB is the only alternative if you going to run your website at shared hosting (almost all of them won't let you run your websites under Full Trust mode) and also if you need simple x-copy deployment enabled website.

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