Service - memory leak

[igorrom]

Hello, 

Our service reads some data from archive each minute (using Thread). But when this service is running, Runtime memory increases continuously.

Could someone help me to detect, what is wrong with this part of code:

    public class ServiceExtension : IProjectServiceExtension

    {

        Thread t1;

        public void Start(IProject context, IBehavior behavior)

        {

            t1 = new Thread(() => Calculation(context));

            t1.Priority = ThreadPriority.Highest;

            t1.Start();

        }

        public void Calculation(IProject context)

        {

            IRuntimeArchive RuntimeArchive = null;

            IEnumerable<IRuntimeArchiveVariable> ArchiveVariables = null;

            IRuntimeArchiveVariable ArchiveVariable = null;

            while (true){

                try{

                    //Gets necessary archive of the project                             

                    RuntimeArchive = (from X in context.RuntimeArchiveCollection where X.Name == "1MIN_1D" select X).First();

                    if (RuntimeArchive == null){

                        Debug.Print("No archive available!");

                        return;

                    }

                    //Gets variables

                    ArchiveVariables = (from X in RuntimeArchive.VariableCollection where X.Name.Contains(".ActivePower") && X.AggregationType.ToString().Contains("Average") select X);

                    foreach (var item in ArchiveVariables){

                        ArchiveVariable = null;

                        //Get variables

                        ArchiveVariable = (from X in RuntimeArchive.VariableCollection where X.Name != null && X.Name == "ActivePower" select X).FirstOrDefault();

                        //some logic
                        //........

                    }

                }

                catch (Exception e){

                    Debug.Print(e.ToString());

                }

                //Wait at least 1min

                Thread.Sleep(60000);

            }

        }

    }

Thanks!

[georgk]

Hello,

A common RAM leakage in Code with Archive-reading and writing is caused by the ArchiveFilters.

ArchiveFilters are created and used.
But those ArchiveFilters are never deleted.

Is that the case here?

BR,
Georg

[carki]

You will never get out of the while loop?

In my opinion your Code is not in a minute cycle.