Memory issue

[mikry]

Hello,

I have a problem with release memory. In my small example is only create of StiReport object and calling Render function. Then i try release whole object from memory. But after that is still some alocated memory. If I run this function 1000x allocated memory still increases!

What I must do for complete memory free?

Thanks Michal

[Jan]

Hello,

Please read the following topics:

http://stimulsoft.helpserve.com/index.p ... ticleid=24
http://stimulsoft.helpserve.com/index.p ... ticleid=87
http://stimulsoft.helpserve.com/index.p ... icleid=299

Thank you.

[mikry]

Hello,

do You tried this solution ever? This solution has two problems.

1) alocated too match memory like siple "new" sintax, look at attachment

StimulSoftMemory

StimulSoftMemory.jpg (100.09 KiB) Viewed 2837 times

.

In my simple exemple before You can just add new method

string compiledReportFile = "report_tmp.mrt";
private void GenerateSec(string template)
{
StiReport report = null;

if (File.Exists(compiledReportFile))
{
report = StiReport.GetReportFromAssembly(compiledReportFile, true);
}
else
{
report = new StiReport();
report.Load(template);
report.Compile(compiledReportFile);
}
report.Render(false);

report.RenderedPages.Clear();
report.Dispose();
GC.Collect();
}

2) second probel of this solution is worse. This solution has problem with multithreading. If we run generation very fast in few threads, then was unexpectedly raise errors with some problem in template. Not for all, but always for couple documents. We change sintax from "GetReportFromAssembly" to simple "new" and problem disappeared.

Michal

[mikry]

Method "GetReportFromAssembly" has parameter "lockFile". If this parameter is true it, then the very big memory space is alocated and mostly released after time, but still grows. This is still bad. If this parameter is not set (false), then memory is not released never.

If I want used this parameter "lockFile" i must save complited report to the disk. That is imposible in my solution.

I'm afraid, that parameter make from multithread app single thred app.

Michal

[HighAley]

Hello.

There is another solution of your issue. You could use the Interpretation mode of the report.
Please, let us know if you will have any problem with it.

Thank you.

[mikry]

Hello, in Your last oficial version "Stimulsoft Reports.Net 2012.3" is the Interpretation mode marked as "Beta". I can't risk some other error.

Why You can't release all alocated sources after Dispose() object? Where is problem? I don't understand. This is standard behavior of all .NET objects.

What is diferent in paramater "lockFile"? Why the version of function GetReportFromAssembly(Stream assemblyStream) is diferent then GetReportFromAssembly(string assemblyFile, true) ?

Michal

[HighAley]

Hello.

Hello, in Your last oficial version "Stimulsoft Reports.Net 2012.3" is the Interpretation mode marked as "Beta". I can't risk some other error.

This mode needs very much time to become final.

Why You can't release all alocated sources after Dispose() object? Where is problem? I don't understand. This is standard behavior of all .NET objects.

The report is compiled to assemby. The assembly is loaded to memory and the report instance is created there.
Then please read next article:
http://stimulsoft.helpserve.com/index.p ... ticleid=24

The fact is that .NET Framework cannot unload an assembly from memory. It can be unloaded only together with the application domain, which loaded it. If the assembly (the report) is loaded with a basic application domain, then it is impossible to unload it (only if you close the application).

What is diferent in paramater "lockFile"? Why the version of function GetReportFromAssembly(Stream assemblyStream) is diferent then GetReportFromAssembly(string assemblyFile, true) ?

Save the report as assembly. Before building of the report its necessary to load from assembly with method StiReport.GetReportFromAssembly.

Method has two variants of the work:
1. StiReport report = StiReport.GetReportFromAssembly("myreport.dll");

Report will is loaded in memory exactly so much once how much will is caused this method,
but at file of the assembly of the report will not be locked.

2. StiReport report = StiReport.GetReportFromAssembly("myreport.dll", true);

Report will is loaded in memory only once even though cause the method over and over again.
At file of the assembly will be locked before closing of application (blocking leaves only after
closing of application). Use of this method does not cause the memory leaks since assembly
of the report is loaded in memory only once.

You can read about it on our forum: http://forum.stimulsoft.com/viewtopic.php?&t=131

Thank you.