System Calls In Apache (Linux) vs IIS (Windows)Mattias Geniar, Sunday, November 9, 2008 - last modified: Wednesday, November 9, 2016
The following 2 pictures show a clear difference in system calls between a Linux' Apache, and a Windows' IIS. Draw your own conclusions. :-)
Microsoft's IIS Webserver
They both seem chaotic, but the Apache one shows a lot more structure than the IIS one, which seems to be tangled up in its own web.