我写了一个程序，使用Lucene.net来索引一个3GB的文本文件。当索引建立时，进程的CPU消耗高达80，内存使用量高达1GB。**有没有办法限制CPU和内存使用量？**下面是我用来建立索引的程序-

public void BuildIndex(string item)
        {
            System.Diagnostics.EventLog.WriteEntry("LuceneSearch", "Indexing Started for " + item);
            string indexPath = string.Format(BaseIndexPath, "20200414", item);
            if (System.IO.Directory.Exists(indexPath))
            {
                System.IO.Directory.Delete(indexPath, true);
            }

            LuceneIndexDirectory = FSDirectory.Open(indexPath);
            Writer = new IndexWriter(LuceneIndexDirectory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED);

            Writer.SetRAMBufferSizeMB(500);

            string file = "c:\LogFile.txt";
            string line=string.Empty;
            int count = 0;
            StreamReader fileReader = new StreamReader(file);
            while ((line = fileReader.ReadLine()) != null)
            {
                count++;
                Document doc = new Document();

                try
                {
                    doc.Add(new Field("LineNumber", count.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED));
                    doc.Add(new Field("LogTime", line.Substring(6, 12), Field.Store.YES, Field.Index.NOT_ANALYZED));
                    doc.Add(new Field("LineText", line.Substring(18, line.Length -18 ), Field.Store.YES, Field.Index.NOT_ANALYZED));
                    Writer.AddDocument(doc);
                }
                catch (Exception)
                {

                    System.Diagnostics.EventLog.WriteEntry("LuceneSearch", "Exception ocurred while entring a line in the index");
                }

            }
            System.Diagnostics.EventLog.WriteEntry("LuceneSearch", "Indexing finished for " + item + ". Starting Optimization now.");
            Writer.Optimize();
            Writer.Commit();

            Writer.Close();

            LuceneIndexDirectory.Dispose();

            System.Diagnostics.EventLog.WriteEntry("LuceneSearch", "Optimization finished for " + item );
        }