In most situation, there is no need to use ns_eval; one can go to /acs-admin/apm and click on "reload changed".
There are cases, where "reload changed" does not work (when e.g. PerformanceModeP is activated; per default, performance mode is not activated. we don't set PerformanceModeP even on our production systems). If for some reason, you have to activate the performance mode, "reload changed does not work amd one has to use ns_eval, as Dave pointed out. There are combinations of xotcl-core and XOTcl, where ns_eval caused problems. For some more details, check https://openacs.org/forums/message-view?message_id=1567233
Option (c) of my posting is implemented in xotcl 1.6.1, the latest release (since nov) is 1.6.2.
Note, that reloading of procs does not work for scheduled procedures running in own threads. This has nothing to do with xotcl, but with the way how the scheduled procs are implemented.
Hope this helps
-gustaf neumann
