CURL in PHP performance question

[Brent Wiese]

Running 4.9_REL with about 10 or so jails.

One of my users wants my to compile CURL so they can use it with PHP, which
is being run as an Apache module (not cgi).

I've never used it, but based on the way it reads, it seems like the
overhead of the calls on even a moderately busy site could have serious
server impacts.

Am I worried about nothing or do I need to put my foot down so he doesn't
affect the other jail users by taking up all the resources?

Brent