Question

I have a netbook with 1.20Ghz Processor & 1GB Ram.

I’m running a C# WinForms app on it which, at 5 minute intervals, reads every line of a text file and depending on what the content of that line is, either skips it or writes it to an xml file. Sometimes it may be processing about 2000 lines.

When it begins this task, the processor gets maxed out, 100% use. However on my desktop with 2.40Ghz Processor and 3GB Ram it’s untouched (for obvious reasons)… is there any way I can actually reduce this processor issue dramatically? The code isn’t complex, I’m not bad at coding either and I’m not constantly opening the file, reading and writing… it’s all done in one fell swoop.

Any help greatly appreciated!?

Sample Code

***Timer…..

#region Timers Setup

            aTimer.Tick += new EventHandler(OnTimedEvent);
            aTimer.Interval = 60000;
            aTimer.Enabled = true;
            aTimer.Start();
            radioButton60Mins.Checked = true;

            #endregion Timers Setup


private void OnTimedEvent(object source, EventArgs e)
        {
            string msgLoggerMessage = "Checking For New Messages " + DateTime.Now;
            listBoxActivityLog.Items.Add(msgLoggerMessage);
            MessageLogger messageLogger = new MessageLogger();
            messageLogger.LogMessage(msgLoggerMessage);

            if (radioButton1Min.Checked)
            {
                aTimer.Interval = 60000;
            }
            if (radioButton60Mins.Checked)
            {
                aTimer.Interval = 3600000;
            }
            if (radioButton5Mins.Checked)
            {
                aTimer.Interval = 300000;
            }

            // split the file into a list of sms messages
            List<SmsMessage> messages = smsPar.ParseFile(smsPar.CopyFile());

            // sanitize the list to get rid of stuff we don't want
            smsPar.SanitizeSmsMessageList(messages);

            ApplyAppropriateColoursToRecSMSListinDGV();
        }

public List<SmsMessage> ParseFile(string filePath)
        {
            List<SmsMessage> list = new List<SmsMessage>();
            using (StreamReader file = new StreamReader(filePath))
            {
                string line;
                while ((line = file.ReadLine()) != null)
                {
                    var sms = ParseLine(line);
                    list.Add(sms);
                }
            }
            return list;
        }

        public SmsMessage ParseLine(string line)
        {
            string[] words = line.Split(',');

            for (int i = 0; i < words.Length; i++)
            {

                words[i] = words[i].Trim('"');
            }
            SmsMessage msg = new SmsMessage();
            msg.Number = int.Parse(words[0]);
            msg.MobNumber = words[1];
            msg.Message = words[4];
            msg.FollowedUp = "Unassigned";
            msg.Outcome = string.Empty;

            try
            {

                //DateTime Conversion!!!
                string[] splitWords = words[2].Split('/');
                string year = splitWords[0].Replace("09", "20" + splitWords[0]);
                string dateString = splitWords[2] + "/" + splitWords[1] + "/" + year;
                string timeString = words[3];
                string wholeDT = dateString + " " + timeString;
                DateTime dateTime = DateTime.Parse(wholeDT);
                msg.Date = dateTime;

            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString());
                Application.Exit();
            }
            return msg;
        }

        public void SanitizeSmsMessageList(List<SmsMessage> list)
        {
            // strip out unwanted messages
            // list.Remove(some_message); etc...
            List<SmsMessage> remove = new List<SmsMessage>();
            foreach (SmsMessage message in list)
            {
                if (message.Number > 1)
                {
                    remove.Add(message);
                }
            }
            foreach (SmsMessage msg in remove)
            {
                list.Remove(msg);
            }
            //Fire Received messages to xml doc
            ParseSmsToXMLDB(list);
}

public void ParseSmsToXMLDB(List<SmsMessage> list)
        {
            try
            {
                if (File.Exists(WriteDirectory + SaveName))
                {
                    xmlE.AddXMLElement(list, WriteDirectory + SaveName);
                }
                else
                {
                    xmlE.CreateNewXML(WriteDirectory + SaveName);
                    xmlE.AddXMLElement(list, WriteDirectory + SaveName);
                }
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString());
                Application.Exit();
            }
        }

public void CreateNewXML(string writeDir)
        {
            try
            {
                XElement Database = new XElement("Database");
                Database.Save(writeDir);
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString());
            }
        }

        public void AddXMLElement(List<SmsMessage> messages, string writeDir)
        {
            try
            {
                XElement Database = XElement.Load(writeDir);
                foreach (SmsMessage msg in messages)
                {
                    if (!DoesExist(msg.MobNumber, writeDir))
                    {
                        Database.Add(new XElement("SMS",
                              new XElement("Number", msg.MobNumber),
                              new XElement("DateTime", msg.Date),
                              new XElement("Message", msg.Message),
                              new XElement("FollowedUpBy", msg.FollowedUp),
                              new XElement("Outcome", msg.Outcome),
                        new XElement("Quantity", msg.Quantity),
                        new XElement("Points", msg.Points)));

                        EventNotify.SendNotification("A New Message Has Arrived!", msg.MobNumber);

                    }
                }
                Database.Save(writeDir);
                EventNotify.UpdateDataGridView();
                EventNotify.UpdateStatisticsDB();
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString());
            }
        }

public bool DoesExist(string number, string writeDir)
        {
            XElement main = XElement.Load(writeDir);
            return main.Descendants("Number")
                      .Any(element => element.Value == number);
        }

Answer 1

Use a profiler and/or Performance Monitor and/or \\live.sysinternals.com\tools\procmon.exe and/or ResourceMonitor to determine what’s going on