Parallel execution and performance

[tomasr78]

I was wondering if my written parallel code well optimized for PDF to Image conversion, it works fine and no race conditions.
What I doing here is reading the same PDF in parallel by passing page index and saving every page to the image, it is much faster than reading all pages PDF to MagickImageCollection and then save images.

Any idea of how to improve further? :)

     MagickNET.SetGhostscriptDirectory(@"C:\Program Files\gs\gs9.53.3\bin");

          Parallel.ForEach(Enumerable.Range(0, 19).Select(i => i), new ParallelOptions {MaxDegreeOfParallelism = 8}, i =>
            {
                Convert(@"C:\test-gswin32c-crash2.pdf", i);
            });

        private static void Convert(string fileName, int frameIndex)
        {
            var noofPages = 0;
            var magickReadSettings = new MagickReadSettings();
            magickReadSettings.Density = new Density(150, 150);
            magickReadSettings.FrameIndex = frameIndex;
            magickReadSettings.FrameCount = 1; 

            using (var image = new MagickImage())
            {
                var timer2 = new Stopwatch();
                timer2.Start();
                image.Read(fileName, magickReadSettings);
                timer2.Stop();
                Console.WriteLine("PDF Load finish " + timer2.Elapsed);
                int page = magickReadSettings.FrameIndex.Value;
                image.Format = MagickFormat.Png;
                var imageFilePath = string.Concat(@"C:\Projects\_temp\", "file-", page, ".png");
                image.Write(imageFilePath);
            }
        }

[dlemstra]

This is indeed a good approach and in the next version you can use PdfInfo.Create(fileName).PageCount to get the number of pages in de document.