note ikegami <p>That perlmod link is not terribly useful. For instructions on creating per-interpreter variables, see "Safely Storing Static Data in XS" in [doc://perlxs]. It even includes an example. <p>The mechanism allows each interpreter in a process to have their own copies of variables. This is useful not only when threads are involved, but in all instances when a process has multiple Perl interpreters (e.g. mod_perl?). 929097 929101