12-Jul-99 08:13 you wrote:
> After experienceing some "brownouts" in Stronghold SSL, I changed our web
> server to modssl last week. We saw a huge increase in performance (of
> course, the brownouts really dragged down the stats I expect) in the range
> of 50 to 80 percent.
> Since our site is a very high profile government site, I tried to keep
> things as simple as possible for the cutover and left out the Shared
> Memory library. I can't find an over abundance of documentation on this
> feature and had some questions.
> First off, does the cache apply to all http requests as well as https
> requests. I'm assuming it does, but its not too exact in the
> documentation.
No it does not :-) AFAIK for now MM can be used only for SSL session cache.
> Secondly, is there any configuration parameters to allow me to specify how
> much memory it uses. I'm generally running with about 300 Megs free.
Yes, when you specify where to put SSL session cache and use MM you must
specify size of MM pool as well. You do not want it really big.
> Any idea of what performance gain to expect? We get about 15000 real hits
> a day, about 60000 total (including graphics). About 10% of those are SSL.
> I need to justify why we want to make the change to the web server and
> even a rough idea is all my employers need to see.
Usually you'll get only very slight gain in perfomance: you did not said
which OS you are using but in most modern OS'es with decent filesystem
cache gain will be small. Usage of MM is better from security standpoint
but will not you buy much from perfomance side. May be Ralf can add some
arguments "pro MM", of course...
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