SRO: Linux Is The Web Server’s Choice

“… we looked at how the Linux platforms, armed with slightly
different versions of Apache, would do against NT with Microsoft’s
Internet Information Server (IIS) 4.0.”

“The answer: Linux with Apache beats NT 4.0 with IIS, hands
down. SuSE, the least effective Linux, is 16 percent faster than
IIS, and Caldera, the leader, is 50 percent faster.”