| 1 |
Execute C code instruction Ñ 1 clock cycle ( 10^8 per sec)
|
| 2 |
Run a client-side C subroutine Ñ can do up to 10^6 instructions in time that is significant for user (few milliseconds)
|
| 3 |
JavaVM interpreter Ñ roughly 50 times slower than C
|
| 4 |
JavaVM Just in Time compiler (effectively compile JavaVM in real time) Ñ roughly 2Ð8 times slower than C
|
| 5 |
Native Java compiler Ñ same speed as C
|
| 6 |
Perl interpreter (processes entire program before interpreting) Ñ 500 times slower than C except in runtime
|
| 7 |
Tcl, JavaScript "true" interpreters Ñ 5000 times slower than C
-
Can still do 100-1000 instructions in time that users don't notice!
|
| 8 |
CGI script Ñ server, network, and client HTML page regeneration delay measured in seconds
|
