Sorry, no time to waste on this running benchmarks for you. You can keep believeing what you read in books if you want, it doesn't matter much to me.

If you're curious about where I got my results, it was during development of HTML::Template. It supports caching in memory, disk and SysV shared memory. Shared memory turned out to be so slow it was hardly worth the implementation effort.

And that's it, I'm done with this thread!

-sam