Google Chrome And IIS 5.0

By -

Don't get me wrong, I like Google Chrome, and it's application shortcut that makes a web application appear like a windows application is an eye opener.  However, it reminds me of IIS 5.0.  When IIS 5.0 was released everyone was so excited that you could run the web site application in a separate process, giving you one process per web site.  This meant if a web site crashed it wouldn't take down the rest of the sites on the server.  However, it was soon realized that windows can only handle a finite amount of threads somewhere between 500 - 800 before it slows to a crawl.  This is why you need to be very careful when multi-threading. All the IIS 5.0 web sites with 5-10 threads a piece where chocking the OS.   So IIS 5.0 was replaced with IIS 6.0 where you could group web sites into a single process.  Back to Chrome: 26 threads just to run Pandora.com in one process.  The other processes are running 9 threads a piece.  Just for you that don't know, each tab in Chrome runs in a separate window process and closing a tab closes the process, freeing the OS resources, threads, memory, etc... A noble idea to contain and isolate web applications that have run away javascript.  However, this isn't Linux -- you can't just fork as much as you want.

{6230289B-5BEE-409e-932A-2F01FA407A92}

Comments

Post a Comment

Popular posts from this blog

Yet once more into the breech (of altered programming logic)

By -
Once upon a time, long long ago, I wrote 8-bit programs in Tiny-C with absolute addressing being the only reality.  Then we had Borland Turbo-C with relative addresses and the joys of relative assembly jumps. Enter Windows and the joys of locking and unlocking memory blocks that you must allocated and manage yourself. Then came Visual Basic which evolved into .Net CLR and decreasing awareness of what is happening under the hood.   With VS2010 including F# and enhanced parallelism in .Net4, we actually have to go retro a bit – back to the world of having to understand the hardware. CPU speeds are no longer increasing – I have an old laptop from six+ years ago that ran at 3.2 GHz. This year I updated one of my machines off-the-shelf from Costco.com, an I7-920 with 4 cores and hyper-threading (8 CPUs appears in Task Manager) and 12 GB of DDR3 RAM. This week I ordered from Costco a Phenom II X6 (Yes – 6 REAL CORES) for one of my daughters.  This CPU will (according to YouTube demos) o
Read more

Simple WP7 Mango App for Background Tasks, Toast, and Tiles: Code Explanation

By -
Image
This is a continuation of this post , explaining how the sample app works. Caution : This sample isn’t meant as an example of best patterns and practices. If you see something in the code you would never do, then don’t. Solution File Organization The app has three Visual Studio Projects: the app, the agent, and the shared code library between them. One of the great things about Mango is that now the built-in Visual Studio Unit test functionality is available. By separating out the meat of the work into the SampleShared project, I can also focus my unit testing there. SampleApp1 The app has a MainPage, a ViewModel, and the WMAppManifest.xml file modified to note my ExtendedTask of BackgroundServiceAgent. The Agent is extremely simple with a call to the shared library, an update to the Tile, and a call to pop up Toast. The meat of the work is in the SampleShared library. The AgentMgr manages the background agent : add, remove, find, run now. It is only called f
Read more

How to convert SVG data to a Png Image file Using InkScape

By -
Image
Introduction The project required the need to put the visual pie chart on a web page on the client and in a Pdf file created on the server. I eventually choose to use a Telerik Kendo DataViz Chart control on the client, and use a PNG file on the server for the Pdf file. This blog post will explain the process and code to convert the client-side pie chart Svg data to a Png file, and provide a download to the working code. Prerequisites You need to have a trial version of the Telerik Kendo library installed in order to make the sample code work. You also need InkScape installed. InkScape is the application that does the actual conversion. You will need to change the Web.config appSetting of “ExeDirectoryForInkscape” to represent your own installation location. Any SVG Data Will Work The pie chart was created using the Telerik Kendo DataViz chart control. While I name a specific control, as long as you have access to the SVG data, the same conversion process on the server will
Read more