libapache2-mod-speedycgi 2.22-8 (amd64 binary) in ubuntu gutsy

 SpeedyCGI is a way to run perl scripts persistently, which usually makes
 them run much more quickly because it avoids the overhead of starting
 up a new perl interpreter and compiling the perl code.
 .
 This package provides an Apache2 module so that SpeedyCGI scripts can be run
 without the overhead of doing a fork/exec for each request. Please note that
 this package only works with Apache2's prefork MPM or the ITK MPM, as it is
 not thread-safe.