Introduction to the Apache Web Server - ApacheCon

Make sure that everyone runs this, ponders the results, compares it to other students’ output, and so on.
Make sure that they look at all the fields, and know what they mean. This may seem like a silly exercise at
the time, but most of this stuff will come in useful throughout the rest of this section, and the rest of the
course.
-k flag for KeepAlive.
Can run this against other servers as well as your own. Try not to do this without the permission of the
server administrator.
Some sites will detect this as an attack, and block your address. That would be annoying.
11.3 Perl
use Benchmark;
use LWP::Simple;
timethese($count, {
’Slow’ => ’$content = get("http://server/slow.cgi");’,
’Fast’ => ’$content = get("http://server/fast.cgi")’,
’EvenFaster’ => ’$content = get("http://server/mod perl handler")’,
});
• Gives comparative times for the two documents
• Note that this includes network time
• And, of course, this can be used to time any pieces of code that you are interested in comparing
• It will be interesting to come back to this code after we have covered mod perl
11.4 Optimizing hardware
• More RAM
• If you have to swap, all bets are off. When in doubt, buy more RAM.
• Fast disk access. RAID is good.
• Faster CPU
• Pretty much the obvious stuff. Apache does not require any custom hardware.
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