Simple comparison: 64-bit Apache does not have an official version. It is built by itself, and 64-bit Apache
1. 32bit Apache
One URL: Apache self-contained index.html
Run jmeter: 2000 threads 100 Loop
Result:
./Jmeter-n-t test. JMX
Created the tree successfully using test. JMX
Starting the test @ Fri Mar 23 18:09:37 CST 2012 (1332497377879) waiting for possible shutdown message on port 4445
Generate Summary Results = 200000 in 11.2 S = 17817.4/s AVG: 59 min: 0 MAX: 10110 err: 0 (0.00%)
Tidying up... @ Fri Mar 23 18:09:49 CST 2012 (1332497389232)
... End of run
2. 64bit Apache
One URL: Apache self-contained index.html
Run jmeter: 2000 threads 100 Loop
Result:
./Jmeter-n-t test. JMX
Created the tree successfully using test. JMX
Starting the test @ Fri Mar 23 18:04:35 CST 2012 (1332497075455) waiting for possible shutdown message on port 4445
Generate Summary Results = 200000 in 12.0 S = 16661.1/s AVG: 58 min: 0 MAX: 9292 err: 0 (0.00%)
Tidying up... @ Fri Mar 23 18:04:47 CST 2012 (1332497087574)
... End of run