Multi threading or Task or Parallel

Question

User-1256377279 posted

Hi Guys,

I have 2 method which takes approximately 40 sec each, Please can you help to find best way to run whether should i  use MultiThreading / Task / Parallel.

Below are my Methods

  bool MandatValidate = oImport.ValidateMandateLoad(noOfRow, workSheet, ref importlistmandat, ref sb);
                                

  bool NonMandatValidate =  oImport.ValidateNonMandateLoad(noOfRow, workSheet, ref importlistnonmandat, ref sb);

Many Thanks 

Shabb

Answer 1

User475983607 posted

I have 2 method which takes approximately 40 sec each, Please can you help to find best way to run whether should i  use MultiThreading / Task / Parallel.

It's not possible due to the ref inputs. Your question infers that throwing treads at a performance problem will fix the problem .  It will not.  Multithreaded application require upfront design.  I recommend learning the basics.

https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/async/

Answer 2

User753101303 posted

Hi,

It seems you are scanning the same data twice (each time with a different criteria) ? You can't validate data in one go ?

Before looking at this, I would first make sure there nothing that can be done quite easily to optimize the current code (and would look at where this time is spent exactly).

Answer 3

User-1256377279 posted

Hi Patrice,

Yes it make sense, My main concern is not performance i will try to improve internally. My question was how we can run 2 method simultaneously and how to get boolean result whether both the method have successfully completed or not.

Many Thanks,

Shabbir

Answer 4

User475983607 posted

Yes it make sense, My main concern is not performance i will try to improve internally. My question was how we can run 2 method simultaneously and how to get boolean result whether both the method have successfully completed or not.

Again, the "ref" inputs make this impossible.  

Answer 5

User753101303 posted

And there is AFAIK no magic bullet. You still need to understand where this time is spent (and in particular if it is CPU or I/O bound) and design things so that it could work (and possibly efficiently). One level up you have https://docs.microsoft.com/en-us/dotnet/standard/parallel-processing-and-concurrency

Answer 6

User-1256377279 posted

Thanks ParticeSc for your kind comment, I will look into it.

If you have any links to Implement Threading / Task / Parallel programming please do share 

Many Thanks,

Shabbir

Answer 7

User475983607 posted

If you have any links to Implement Threading / Task / Parallel programming please do share 

See the previous posts.

Answer 8

User-1256377279 posted

Thanks got it