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Execute C code instruction Ñ 1 clock cycle ( 10^8 per sec)
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Run a client-side C subroutine Ñ can do up to 10^6 instructions in time that is significant for user (few milliseconds)
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JavaVM interpreter Ñ roughly 50 times slower than C
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JavaVM Just in Time compiler (effectively compile JavaVM in real time) Ñ roughly 2Ð8 times slower than C
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Native Java compiler Ñ same speed as C
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Perl interpreter (processes entire program before interpreting) Ñ 500 times slower than C except in runtime
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Tcl, JavaScript "true" interpreters Ñ 5000 times slower than C
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Can still do 100-1000 instructions in time that users don't notice!
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CGI script Ñ server, network, and client HTML page regeneration delay measured in seconds
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