i am running 12 threads .function which these threads are calling is not having any lock on some object.but still these threads are taking too much time.(16 minutes).each thread ially parsing a xml document which is running alright if run indiviually.is this problem because of some reason related max no threads provided by express edition or some blocking dn by express edition.
code of func whic each thread calls is given below.
each thread is given different rssfeed(urladdress)
public static class RssFileReader
{
public static Rss GetRssDocumentData(string rssFeed)
{
Console.WriteLine("thread in RssFileReader: " + Thread.CurrentThread.Name);
IFormatProvider culture = new CultureInfo("fr-FR", true);
Rss rssDocumentObject=new Rss();
XmlDocument documentObj = new XmlDocument();
try
{
documentObj.Load(HttpClient.GetWebResponse(@rssFeed, null, null, 1200000, @"http://www.sahil.com").GetResponseStream());
}
catch(Exception e)
{
e.Source = "RssFileReader:Loading xmldocument object";
throw;
}
try
{
XmlNodeList channelList = documentObj.GetElementsByTagName("channel");
for (int k = 0; k < channelList.Count; k++)
{
rssDocumentObject.ListOfChannel.Add(new Channel());
int noOfItemInChannel = -1;
//XmlNodeList itemList = channelList[k].ChildNodes;
for (int i = 0; i < channelList[k].ChildNodes.Count; i++)
{
switch (channelList[k].ChildNodes[i].Name)
{
case "item":
noOfItemInChannel++;
XmlNodeList xmlChildNodeOfItem = channelList[k].ChildNodes[i].ChildNodes;
//debugging
//Console.WriteLine("Thread Name in item in RssFileReader" + Thread.CurrentThread.Name);
rssDocumentObject.ListOfChannel[k].ListOfItem.Add(new Item());
for (int j = 0; j < xmlChildNodeOfItem.Count; j++)
{
switch (xmlChildNodeOfItem[j].Name)
{
case "title":
rssDocumentObject.ListOfChannel[k].ListOfItem[noOfItemInChannel].ItemTitle.InnerText = xmlChildNodeOfItem[j].InnerText;
break;
case "link":
rssDocumentObject.ListOfChannel[k].ListOfItem[noOfItemInChannel].ItemLink.InnerText = xmlChildNodeOfItem[j].InnerText;
break;
case "description":
rssDocumentObject.ListOfChannel[k].ListOfItem[noOfItemInChannel].ItemDescription.InnerText = xmlChildNodeOfItem[j].InnerText;
break;
case "pubDate":
try
{
string dateTimeTemp = xmlChildNodeOfItem[j].InnerText;
char[] splitCharArray = new char[1];
splitCharArray[0] = ' ';
string[] splitedDateTimeTemp = dateTimeTemp.Split(splitCharArray);
string RFC822 = "ddd,ddMMMyyyyHH:mm:ss";
rssDocumentObject.ListOfChannel[k].ListOfItem[noOfItemInChannel].ItemPubDate.PublicationDate = DateTime.ParseExact(splitedDateTimeTemp[0] + splitedDateTimeTemp[1] + splitedDateTimeTemp[2] + splitedDateTimeTemp[3] + splitedDateTimeTemp[4], RFC822, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.None);
}
//exception not rethrown default date is assigned
catch (Exception e)
{
//Console.WriteLine("Exception while formatting string to datetime in rssFileReader():" + e);
}
break;
case "guid":
rssDocumentObject.ListOfChannel[k].ListOfItem[noOfItemInChannel].ItemGuid.InnerText = xmlChildNodeOfItem[j].InnerText;
break;
}
}
break;
case "title":
rssDocumentObject.ListOfChannel[k].ChannelTitle.InnerText = channelList[k].ChildNodes[i].InnerText;
break;
case "description":
rssDocumentObject.ListOfChannel[k].ChannelDescription.InnerText = channelList[k].ChildNodes[i].InnerText;
break;
case "link":
rssDocumentObject.ListOfChannel[k].ChannelLink.InnerText = channelList[k].ChildNodes[i].InnerText;
break;
case "language":
rssDocumentObject.ListOfChannel[k].ChannelLanguage.InnerText = channelList[k].ChildNodes[i].InnerText;
break;
case "pubDate":
try
{
string dateTimeTempForChannel = channelList[k].ChildNodes[i].InnerText;
char[] splitCharArrayForChannel = new char[1];
splitCharArrayForChannel[0] = ' ';
string[] splitedDateTimeTempForChannel = dateTimeTempForChannel.Split(splitCharArrayForChannel);
string formatStringForChannel = "ddd,ddMMMyyyyHH:mm:ss";
rssDocumentObject.ListOfChannel[k].ChannelPubDate.PublicationDate = DateTime.ParseExact(splitedDateTimeTempForChannel[0] + splitedDateTimeTempForChannel[1] + splitedDateTimeTempForChannel[2] + splitedDateTimeTempForChannel[3] + splitedDateTimeTempForChannel[4], formatStringForChannel, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.None);
}
//exception not rethrown default date is assigned
catch (Exception e)
{
//Console.WriteLine("Exception while formatting string to datetime in rssFileReader():" + e);
}
break;
case "lastBuildDate":
try
{
string dateTimeTempForChannel = channelList[k].ChildNodes[i].InnerText;
char[] splitCharArrayForChannel = new char[1];
splitCharArrayForChannel[0] = ' ';
string formatStringForChannel = "ddd,ddMMMyyyyHH:mm:ss";
string[] splitedDateTimeTempForChannel = dateTimeTempForChannel.Split(splitCharArrayForChannel);
rssDocumentObject.ListOfChannel[k].ChannelLastBuildDate.LastBldDate = DateTime.ParseExact(splitedDateTimeTempForChannel[0] + splitedDateTimeTempForChannel[1] + splitedDateTimeTempForChannel[2] + splitedDateTimeTempForChannel[3] + splitedDateTimeTempForChannel[4], formatStringForChannel, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.None);
}
//exception not rethrown default date is assigned
catch (Exception e)
{
//Console.WriteLine("Exception while formatting string to datetime in rssFileReader():" + e);
}
break;
case "docs":
rssDocumentObject.ListOfChannel[k].ChannelDocs.InnerText = channelList[k].ChildNodes[i].InnerText;
break;
case "generator":
rssDocumentObject.ListOfChannel[k].ChannelGenerator.InnerText = channelList[k].ChildNodes[i].InnerText;
break;
case "managingEditor":
rssDocumentObject.ListOfChannel[k].ChannelManagingEditor.InnerText = channelList[k].ChildNodes[i].InnerText;
break;
case "webMaster":
rssDocumentObject.ListOfChannel[k].ChannelWebMaster.InnerText = channelList[k].ChildNodes[i].InnerText;
break;
case "ttl":
rssDocumentObject.ListOfChannel[k].ChannelTtl.InnerText = channelList[k].ChildNodes[i].InnerText;
break;
}
}
}
}
catch(Exception e)
{
e.Source = "RssFileReader:Reading xml document object data to rss object";
throw;
}
Console.WriteLine(" Thread out RssFilereader :" + Thread.CurrentThread.Name);
return rssDocumentObject;
}
}
note:-while debugging i got to know that its taking time while loading xml document.
is there any limit imposed on system for number of webrequest objects?
it was taking time when i was running it from console applcation fr testing.
reason fo much time taken was io blocking because of pint statements fr debugging.