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Stop playing around with the GC manually.
Detailed description
Previous versions of Nanoc (3.x) had the problem of occasionally running very slowly due to spending large amounts of time in the garbage collector (79% for one site).
As a temporary workaround until either Nanoc and/or Ruby improved memory handling, I added a
GCController
which disables and enables the GC at certain times in order to eliminate needless GC activity. I knew from the start that this was a hack and would cause problems, but luckily very few people reported having problems with it—until now, I guess (#972).Ruby 2.2 and up have generational GC, which greatly reduces the demand on the garbage collector. This should eliminate the need for this GC hack.
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