Any good apache+linux benchmarks out there?

[John Chambers]

Not unrelated to my earlier question:  The folks who asked  me  about
good  ways to put zillions of little files on a system have also been
wondering what is the best hardware at the moment for a  web  server.
This  of  course  changes, probably on a weekly basis.  They are very
partial to apache and linux, for all the usual reasons. Their current
estimate is an average of maybe 50 requests per second. I'd take that
as order-of-magnitude, but it's a useful talking point. Anything less
would probably be too slow.  They aren't fazed by big RAID boxes with
a terabyte of data; they already have those up and running.

I've dug around in the (rather large) body of information  about  web
server  performance.   It  does occur to me that some BLU members are
likely to have researched this just last week, and maybe I can save a
bit of time by simply asking.

So do you know of some good benchmarks that I can point to to say what
should be bought to get a big, fast web server?


(One interesting thing is that I found a fair number  of  sites  that
compare  commercial  web  servers,  but  make no mention of apache or
linux.  Curious ...)