System Calls In Apache (Linux) vs IIS (Windows)

Mattias Geniar, Sunday, November 9, 2008 - last modified: Sunday, November 2, 2008

The following 2 pictures show a clear difference in system calls between a Linux' Apache, and a Windows' IIS. Draw your own conclusions. :-)

First up: Apache.

System calls for Apache

System calls for Apache

Followed by: IIS

System calls for IIS

System calls for IIS

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.

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Andreas Sunday, February 1, 2009 at 01:08

well maybe this is the raeson why the IIS were so vulnerable back in the day as i guess that these systemcalls back there remained the same as now


Pierre Sunday, May 23, 2010 at 09:52

As G-WAN outperforms Apache and IIS by orders of magnitude in performances (for both static and dynamic contents) and footprint (the 100 KB G-WAN is a *native* Web App. Server offering full ANSI C scripts) it would be interesting to see the same graph applied to G-WAN.

G-WAN is available on Linux and Windows (where it beats IIS-7.0-nested-in-the-Windows-kernel).


sebastian Monday, December 19, 2011 at 20:58

nice! i only wish to know, is it a system call picture with all running-IIS Features? it look like!


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